CA2507269C - Staple extractor - Google Patents
Staple extractor Download PDFInfo
- Publication number
- CA2507269C CA2507269C CA002507269A CA2507269A CA2507269C CA 2507269 C CA2507269 C CA 2507269C CA 002507269 A CA002507269 A CA 002507269A CA 2507269 A CA2507269 A CA 2507269A CA 2507269 C CA2507269 C CA 2507269C
- Authority
- CA
- Canada
- Prior art keywords
- staple
- shank
- clamp head
- bridge
- pry tip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 210000003813 thumb Anatomy 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims description 12
- 238000000605 extraction Methods 0.000 claims description 8
- 230000000284 resting effect Effects 0.000 claims description 4
- 230000008901 benefit Effects 0.000 claims description 3
- 238000003780 insertion Methods 0.000 description 6
- 230000037431 insertion Effects 0.000 description 6
- 239000002023 wood Substances 0.000 description 6
- 230000009471 action Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- IDTQMAFSZYEUKJ-GONVEYFTSA-N poskin Chemical compound C1([C@H](C(=O)OC2C[C@@H]3[C@H]4O[C@H]4[C@@H](N3C)C2)COC(=O)CC)=CC=CC=C1 IDTQMAFSZYEUKJ-GONVEYFTSA-N 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
- B25C11/00—Nail, spike, and staple extractors
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Portable Nailing Machines And Staplers (AREA)
Abstract
A staple extractor having a handle, a shank attached to the handle and having a conical pry tip, and a sliding member having a clamp head engageable with the pry tip and slidably attached to the shank so as to permit relative longitudinal movement between the shank and sliding member, wherein the clamp head has opposed wings that straddle the pry tip so as to releasably secure a staple bridge. The sliding member has a thumb knob located proximate the handle for moving the sliding member between a retracted position and a clamping position.
Description
Y:\WBD01\3160 CA\Spec\Amd Spec-Clms 060123.wpd STAPLE EXTRACTOR
Field of the Invention This invention relates to a staple extractor for removing staples embedded in wood or other materials, such as staples used to attach upholstery to wood members in furniture.
Background of the Invention Numerous staple extractors have been developed and there are numerous patents covering staple extractors.
Several patents disclose specially configured tips for insertion under a staple bridge in order to remove the staple with a levering action of the tool. (In this application, including the claims, the term "bridge" is used to refer to the portion of a staple joining the two legs of the staple.) For example, US Patent No.
5,031,881, issued 16 July 1991 to Thurmston; US Patent No. 3,583,673, issued 8 June 1971 to Poskin; US Patent No. 4,553,737, issued 19 November 1985 to Yi;
US Patent No. 5,090,663, issued 25 February 1992 to Crutchfield et al.; US
Patent No. 6,308,935, issued 20 October 2001 to Rocheford; and US Patent No.
6,807,699, issued 26 October 2004 to Michelman.
Other patents disclose staple extractors in which, during use, the bridge of the staple is clamped between two pivotally attached members. For example:
1. US Patent No. 2,750,148, issued 12 June 1956 to Burbank, discloses a device having a pivotally attached hook and prying end, wherein the hook is intended to latch onto a staple bridge to assist in the insertion of the prying end under the bridge and to retain the bridge on the prying end during extraction.
Field of the Invention This invention relates to a staple extractor for removing staples embedded in wood or other materials, such as staples used to attach upholstery to wood members in furniture.
Background of the Invention Numerous staple extractors have been developed and there are numerous patents covering staple extractors.
Several patents disclose specially configured tips for insertion under a staple bridge in order to remove the staple with a levering action of the tool. (In this application, including the claims, the term "bridge" is used to refer to the portion of a staple joining the two legs of the staple.) For example, US Patent No.
5,031,881, issued 16 July 1991 to Thurmston; US Patent No. 3,583,673, issued 8 June 1971 to Poskin; US Patent No. 4,553,737, issued 19 November 1985 to Yi;
US Patent No. 5,090,663, issued 25 February 1992 to Crutchfield et al.; US
Patent No. 6,308,935, issued 20 October 2001 to Rocheford; and US Patent No.
6,807,699, issued 26 October 2004 to Michelman.
Other patents disclose staple extractors in which, during use, the bridge of the staple is clamped between two pivotally attached members. For example:
1. US Patent No. 2,750,148, issued 12 June 1956 to Burbank, discloses a device having a pivotally attached hook and prying end, wherein the hook is intended to latch onto a staple bridge to assist in the insertion of the prying end under the bridge and to retain the bridge on the prying end during extraction.
2. US Patent No. 4,293,119, issued 6 October 1981 to Diederichs, discloses a device having a lower "jaw" for insertion under the bridge of a staple; an upper "jaw" pivotally connected to the lower jaw and spring biased into an open position opposite the lower jaw; and a handle pivotally connected to the lower jaw and linked to the upper jaw, such that in use a downward prying motion of the handle is intended to cause the lower and upper jaw to close, thus clamping the bridge of the staple during extraction.
3. US Patent No. 4,575,049, issued 11 March 1986 to Fister, discloses a device having a concave tongue for insertion under the bridge of a staple, an opposed convex clamp and a housing, all pivotally linked, wherein in use, squeezing the handle of the device causes the clamp and tongue to close and lift together relative to the housing (braced against the surface containing the staple) so as to extract the staple.
4. US Patent No. 5,088,692, issued 18 February 1992 to Weiler discloses a -)0 device having a pronged member with a double pronged prying end, and a shank pivotally attached to the pronged member and having an end interposable between the prongs, wherein in use the prongs are inserted under a staple bridge and the shank is pivoted relative to the pronged member so as to interpose the shank end between the prongs, thus deforming the bridge so as to clench it between the shank end and the prongs, thus securing the staple for extraction.
The devices disclosed in these patents suffer from a variety of deficiencies, particularly when considered in light of what is desirable in the removal of staples used in furniture, (such as to secure upholstery to wood members), which include that the staple extractor be useable with staples in confined or awkward locations, that the staple extractor permit the user to remove staples by either a levering action of the staple extractor or a direct pull, as the situation warrants; and that the staple extractor minimally mar adjacent surfaces during the extraction process.
Summary of the Invention In accordance with the present invention, there is provided a staple extractor for removing staples embedded in wood or other materials, such as 1() staples used to attach upholstery to wood members in furniture.
In one aspect, the staple extractor of the present invention includes a shank having a pry tip, and a sliding member having a clamp head engageable with the pry tip, the sliding member being moveable longitudinally relative to the shank between a retracted position in which the pry tip may be inserted under a staple bridge and a clamping position in which the clamp head engages the pry tip and in which a staple bridge overlying the pry tip is releaseably secured by the clamp head. Preferably, the pry tip has a single pointed end and a substantially uniform taper. The pry tip may be conical.
In another aspect, the staple extractor of the present invention includes a clamp head engageable with a tapered pry tip, the clamp head including two opposed wings that, when the clamp head is engaged with the pry tip, straddle the pry tip. Each wing is forked and the opening between the forks of one wing is aligned with the opening between the forks of the other wing. In use, when the bridge of a staple to be removed is positioned between the forks of each wing when the sliding member is engaged with the pry tip, the forks impede movement of the staple bridge along the length of the pry tip during removal of the staple.
Preferably, the pry tip is conical.
In another aspect, the staple extractor of the present invention includes a conical pry tip, which conical shape permits rotation of the pry tip incidental to insertion of the pry tip under a staple bridge, and a releaseable means for impeding movement of the staple bridge along the pry tip during extraction of a staple.
Preferably, the releasable means comprises a clamp head engageable with the pry tip and having two opposed forked wings that straddle the pry tip when the clamp head is engaged with the pry tip, such that movement along the length of the pry tip of a staple bridge disposed between the forks is impeded by the forks.
1o Preferably, in the staple extractors of the present invention, the shank has a bend distal the pry tip, wherein in use, a mechanical advantage in removing a staple is obtainable by resting the outside of the bend against the workpiece and pivoting the staple extractor about the bend. Preferably, in the staple extractors of the present invention, the pry tip is marked to indicate a preferred position along the length of the pry tip at which to locate a staple bridge during removal of a staple.
Preferably, in the staple extractors of the present invention, there is a preferred position along the length of the pry tip at which to locate a staple bridge during removal of a staple; the opening between the forks of each wing is a V-shaped opening in that the edges of the forks defining the opening are substantially rectilinear and the edges of the forks meet at an inner corner; and when the sliding member is in the clamping position, the inner corners are aligned with the preferred position; whereby, in use, when a staple bridge is overlying the pry tip and the sliding member is moved towards the clamping position, when the edges of the forks contact the staple bridge, the edges tend to force the staple bridge towards the inner corners and thus towards the preferred position.
Preferably, in the staple extractors of the present invention, the sliding member comprises an internal bore within which a portion of the shank loosely fits i() so as to permit relative longitudinal movement between the sliding member and the shank. Preferably, in the staple extractors of the present invention, there is a hand operable means for moving the clamp head between the retracted and clamping positions, comprising a thumb engageable member attached to the sliding member and located proximate the handle.
Summary of the Drawings Figure 1 is a partially sectional side view of a staple extractor embodiment of the present invention, shown in the clamping position.
Figure 2 is a top isolation view of the pry tip and clamp head of the embodiment shown in Figure 1.
Figure 3 is a partially sectional side view of the embodiment of Figure 1, shown in the retracted position.
Detailed Description with Reference to the Drawings Referring to Figures 1 and 2, there is illustrated a staple extractor 20 embodiment of the present invention. The staple extractor 20 has a handle 22 (shown in sectional view in Figures 1 and 2), a shank 24 rigidly attached to the handle 22 by being partially embedded in the handle 22, and a clamp sleeve 26.
The clamp sleeve 26 has an internal bore within which a portion of the shank 24 is disposed in a loose fit that permits relative longitudinal movement between the clamp sleeve 26 and the shank 24. A portion of the clamp sleeve 26 is disposed within the handle 22 in a loose fit that permits relative longitudinal movement between the clamp sleeve 26 and the handle 22.
There is a bend 28 in the shank 24 proximate the distal end of the shank 24. At the distal end of the shank 24, distal of the bend 28, there is a conical
The devices disclosed in these patents suffer from a variety of deficiencies, particularly when considered in light of what is desirable in the removal of staples used in furniture, (such as to secure upholstery to wood members), which include that the staple extractor be useable with staples in confined or awkward locations, that the staple extractor permit the user to remove staples by either a levering action of the staple extractor or a direct pull, as the situation warrants; and that the staple extractor minimally mar adjacent surfaces during the extraction process.
Summary of the Invention In accordance with the present invention, there is provided a staple extractor for removing staples embedded in wood or other materials, such as 1() staples used to attach upholstery to wood members in furniture.
In one aspect, the staple extractor of the present invention includes a shank having a pry tip, and a sliding member having a clamp head engageable with the pry tip, the sliding member being moveable longitudinally relative to the shank between a retracted position in which the pry tip may be inserted under a staple bridge and a clamping position in which the clamp head engages the pry tip and in which a staple bridge overlying the pry tip is releaseably secured by the clamp head. Preferably, the pry tip has a single pointed end and a substantially uniform taper. The pry tip may be conical.
In another aspect, the staple extractor of the present invention includes a clamp head engageable with a tapered pry tip, the clamp head including two opposed wings that, when the clamp head is engaged with the pry tip, straddle the pry tip. Each wing is forked and the opening between the forks of one wing is aligned with the opening between the forks of the other wing. In use, when the bridge of a staple to be removed is positioned between the forks of each wing when the sliding member is engaged with the pry tip, the forks impede movement of the staple bridge along the length of the pry tip during removal of the staple.
Preferably, the pry tip is conical.
In another aspect, the staple extractor of the present invention includes a conical pry tip, which conical shape permits rotation of the pry tip incidental to insertion of the pry tip under a staple bridge, and a releaseable means for impeding movement of the staple bridge along the pry tip during extraction of a staple.
Preferably, the releasable means comprises a clamp head engageable with the pry tip and having two opposed forked wings that straddle the pry tip when the clamp head is engaged with the pry tip, such that movement along the length of the pry tip of a staple bridge disposed between the forks is impeded by the forks.
1o Preferably, in the staple extractors of the present invention, the shank has a bend distal the pry tip, wherein in use, a mechanical advantage in removing a staple is obtainable by resting the outside of the bend against the workpiece and pivoting the staple extractor about the bend. Preferably, in the staple extractors of the present invention, the pry tip is marked to indicate a preferred position along the length of the pry tip at which to locate a staple bridge during removal of a staple.
Preferably, in the staple extractors of the present invention, there is a preferred position along the length of the pry tip at which to locate a staple bridge during removal of a staple; the opening between the forks of each wing is a V-shaped opening in that the edges of the forks defining the opening are substantially rectilinear and the edges of the forks meet at an inner corner; and when the sliding member is in the clamping position, the inner corners are aligned with the preferred position; whereby, in use, when a staple bridge is overlying the pry tip and the sliding member is moved towards the clamping position, when the edges of the forks contact the staple bridge, the edges tend to force the staple bridge towards the inner corners and thus towards the preferred position.
Preferably, in the staple extractors of the present invention, the sliding member comprises an internal bore within which a portion of the shank loosely fits i() so as to permit relative longitudinal movement between the sliding member and the shank. Preferably, in the staple extractors of the present invention, there is a hand operable means for moving the clamp head between the retracted and clamping positions, comprising a thumb engageable member attached to the sliding member and located proximate the handle.
Summary of the Drawings Figure 1 is a partially sectional side view of a staple extractor embodiment of the present invention, shown in the clamping position.
Figure 2 is a top isolation view of the pry tip and clamp head of the embodiment shown in Figure 1.
Figure 3 is a partially sectional side view of the embodiment of Figure 1, shown in the retracted position.
Detailed Description with Reference to the Drawings Referring to Figures 1 and 2, there is illustrated a staple extractor 20 embodiment of the present invention. The staple extractor 20 has a handle 22 (shown in sectional view in Figures 1 and 2), a shank 24 rigidly attached to the handle 22 by being partially embedded in the handle 22, and a clamp sleeve 26.
The clamp sleeve 26 has an internal bore within which a portion of the shank 24 is disposed in a loose fit that permits relative longitudinal movement between the clamp sleeve 26 and the shank 24. A portion of the clamp sleeve 26 is disposed within the handle 22 in a loose fit that permits relative longitudinal movement between the clamp sleeve 26 and the handle 22.
There is a bend 28 in the shank 24 proximate the distal end of the shank 24. At the distal end of the shank 24, distal of the bend 28, there is a conical
5 pry tip 30. On the surface of the pry tip 30, there is a bridge mark 32 indicating the preferred position for the bridge of a staple (not shown) during removal of the staple with the staple extractor 20. The bridge mark 32 may be made by any suitable means for making a substantially indelible mark in the pry tip 30.
The clamp sleeve 26 includes a thumb knob 34 proximate the handle 22. The clamp sleeve 26 is movable longitudinally relative to the handle 22 and shank 24, by manipulation of the thumb knob 34. The clamp sleeve 26 may thus be moved between a clamping position, as shown in Figure 1, and a retracted 1(1 position, as shown in Figure 2.
At the distal end of the clamp sleeve 26 there is a clamp head 36. The clamp head 36 includes two opposed substantially identical wings 38 that straddle the pry tip 30 when the clamp sleeve 26 is in the clamping position. Each wing is bifurcated, with the forward fork 40 and rearward fork 42 of each wing 38 separated by a V-shaped opening 44, in that the edges of the forks 40, 42 defining the opening 44 are substantially rectilinear and the edges of the forks 40, 42 meet at an inner corner 46. When the clamp sleeve 26 is in the clamping position, the inner corners 46 are aligned with the bridge mark 32.
As shown in Figure 2, between the forward forks 40, there is a V-shaped gap 48, through which a portion of the pry tip 30 may be viewed during use.
To extract a staple embedded in a material such as wood, the user holds the clamp sleeve 26 in the retracted position with the thumb knob 34;
then inserts the pry tip 30 under the bridge of the staple until the bridge is in the vicinity of the bridge mark 32; then uses the thumb knob 34 to move the clamp sleeve 26 to the clamping position, thus securing the bridge; then extracts the staple, typically either by a levering motion achieved by resting the outside of the bend against the workpiece and pivoting the staple extractor about the bend, or by merely pulling the
The clamp sleeve 26 includes a thumb knob 34 proximate the handle 22. The clamp sleeve 26 is movable longitudinally relative to the handle 22 and shank 24, by manipulation of the thumb knob 34. The clamp sleeve 26 may thus be moved between a clamping position, as shown in Figure 1, and a retracted 1(1 position, as shown in Figure 2.
At the distal end of the clamp sleeve 26 there is a clamp head 36. The clamp head 36 includes two opposed substantially identical wings 38 that straddle the pry tip 30 when the clamp sleeve 26 is in the clamping position. Each wing is bifurcated, with the forward fork 40 and rearward fork 42 of each wing 38 separated by a V-shaped opening 44, in that the edges of the forks 40, 42 defining the opening 44 are substantially rectilinear and the edges of the forks 40, 42 meet at an inner corner 46. When the clamp sleeve 26 is in the clamping position, the inner corners 46 are aligned with the bridge mark 32.
As shown in Figure 2, between the forward forks 40, there is a V-shaped gap 48, through which a portion of the pry tip 30 may be viewed during use.
To extract a staple embedded in a material such as wood, the user holds the clamp sleeve 26 in the retracted position with the thumb knob 34;
then inserts the pry tip 30 under the bridge of the staple until the bridge is in the vicinity of the bridge mark 32; then uses the thumb knob 34 to move the clamp sleeve 26 to the clamping position, thus securing the bridge; then extracts the staple, typically either by a levering motion achieved by resting the outside of the bend against the workpiece and pivoting the staple extractor about the bend, or by merely pulling the
6 staple extractor away from the surface in which the staple is embedded; and then releases the extracted staple by moving the clamp sleeve 26 to the retracted position.
When a staple bridge is overlying the pry tip 30 and the user moves the clamp sleeve 26 towards the clamping position, when the edges of the forks 40, bounding the openings 44 contact the staple bridge as the clamp sleeve 26 moves towards the clamping position, the forks 40,42 tend to force the staple bridge towards the inner corners 46 and thus towards alignment with the bridge mark 32.
1(~ The edges of the forks 40, 42 bounding the openings 44 also tend to retain the staple bridge in alignment with the bridge mark 32 during extraction of the staple, by impeding movement of the staple bridge along the length of the pry tip 30.
The conical shape of the pry tip 30 permits it to be positioned as required for insertion between the bridge of a staple and the underlying material.
In some situations, such as where a staple is in a confined or otherwise awkward location, it may be necessary or desirable to roll the staple extractor 20 to one side and for the user to grasp the clamp sleeve 26/ shank 24 with his or her second hand in order to insert the pry tip 30 under the staple bridge. Once the pry tip 30 has been sufficiently inserted under the bridge, the staple extractor 20 may be rolled to a position relative to the staple suitable for moving the clamp sleeve 26 to the clamping position so as to extract the staple.
As will be apparent to those skilled in the art, in light of the foregoing disclosure, many alterations and modifications are possible in the practice of this invention without departing from the spirit or scope thereof. Accordingly, the scope of the invention is to be construed in accordance with the substance defined by the following claims.
When a staple bridge is overlying the pry tip 30 and the user moves the clamp sleeve 26 towards the clamping position, when the edges of the forks 40, bounding the openings 44 contact the staple bridge as the clamp sleeve 26 moves towards the clamping position, the forks 40,42 tend to force the staple bridge towards the inner corners 46 and thus towards alignment with the bridge mark 32.
1(~ The edges of the forks 40, 42 bounding the openings 44 also tend to retain the staple bridge in alignment with the bridge mark 32 during extraction of the staple, by impeding movement of the staple bridge along the length of the pry tip 30.
The conical shape of the pry tip 30 permits it to be positioned as required for insertion between the bridge of a staple and the underlying material.
In some situations, such as where a staple is in a confined or otherwise awkward location, it may be necessary or desirable to roll the staple extractor 20 to one side and for the user to grasp the clamp sleeve 26/ shank 24 with his or her second hand in order to insert the pry tip 30 under the staple bridge. Once the pry tip 30 has been sufficiently inserted under the bridge, the staple extractor 20 may be rolled to a position relative to the staple suitable for moving the clamp sleeve 26 to the clamping position so as to extract the staple.
As will be apparent to those skilled in the art, in light of the foregoing disclosure, many alterations and modifications are possible in the practice of this invention without departing from the spirit or scope thereof. Accordingly, the scope of the invention is to be construed in accordance with the substance defined by the following claims.
7
Claims (26)
1. A staple extractor comprising a) a handle;
b) a shank attached to the handle at a proximal end of the shank and having a pry tip at a distal end of the shank;
c) a sliding member slidably attached to the shank so as to permit relative longitudinal movement as between the shank and the sliding member, the sliding member having a clamp head engageable with the pry tip, wherein the sliding member is movable longitudinally relative to the shank between a retracted position in which the pry tip and the clamp head are sufficiently distant one from the other so as to permit a staple bridge to be inserted between or removed from between the pry tip and the clamp head, and a clamping position in which the pry tip and clamp head are sufficiently proximate one to the other to releaseably secure a staple bridge interposed between them; and d) hand operable means for moving the sliding member longitudinally relative to the shank between the retracted position and the clamping position;
wherein a staple is removable by, with the sliding member in the retracted position, inserting the pry tip between a staple bridge and the underlying material, moving the sliding member to the clamping position to secure the staple bridge, pulling the thus secured staple from the underlying material, and moving the sliding member to the retracted position to release the extracted staple.
b) a shank attached to the handle at a proximal end of the shank and having a pry tip at a distal end of the shank;
c) a sliding member slidably attached to the shank so as to permit relative longitudinal movement as between the shank and the sliding member, the sliding member having a clamp head engageable with the pry tip, wherein the sliding member is movable longitudinally relative to the shank between a retracted position in which the pry tip and the clamp head are sufficiently distant one from the other so as to permit a staple bridge to be inserted between or removed from between the pry tip and the clamp head, and a clamping position in which the pry tip and clamp head are sufficiently proximate one to the other to releaseably secure a staple bridge interposed between them; and d) hand operable means for moving the sliding member longitudinally relative to the shank between the retracted position and the clamping position;
wherein a staple is removable by, with the sliding member in the retracted position, inserting the pry tip between a staple bridge and the underlying material, moving the sliding member to the clamping position to secure the staple bridge, pulling the thus secured staple from the underlying material, and moving the sliding member to the retracted position to release the extracted staple.
2. The staple extractor of claim 1, wherein the clamp head comprises two wings that straddle the pry tip when the sliding member is in the clamping position.
3. The staple extractor of claim 2, wherein each wing comprises two forks with an opening between the forks of one wing aligned with an opening between the forks of the other wing, wherein, in use, when the bridge of a staple to be removed is positioned between the forks of each wing when the sliding member is in the clamping position, the forks impede movement of the staple bridge along the length of the pry tip during removal of the staple.
4. The staple extractor of claim 3, wherein:
a) there is a preferred position along the length of the pry tip at which to locate a staple bridge during removal of a staple;
b) the opening between the forks of each wing is a V-shaped opening in that the edges of the forks defining the opening are substantially rectilinear and the edges of the forks meet at an inner corner; and c) when the sliding member is in the clamping position, the inner corners are aligned with the preferred position;
whereby, in use, when a staple bridge is overlying the pry tip and the sliding member is moved towards the clamping position, when the edges of the forks contact the staple bridge, the edges tend to force the staple bridge towards the inner corners and thus towards the preferred position.
a) there is a preferred position along the length of the pry tip at which to locate a staple bridge during removal of a staple;
b) the opening between the forks of each wing is a V-shaped opening in that the edges of the forks defining the opening are substantially rectilinear and the edges of the forks meet at an inner corner; and c) when the sliding member is in the clamping position, the inner corners are aligned with the preferred position;
whereby, in use, when a staple bridge is overlying the pry tip and the sliding member is moved towards the clamping position, when the edges of the forks contact the staple bridge, the edges tend to force the staple bridge towards the inner corners and thus towards the preferred position.
5. The staple extractor of any one of claims 1 through 4, wherein the shank has a bend proximal the pry tip, wherein in use, a mechanical advantage in removing a staple is obtainable by resting the outside of the bend against the workpiece and pivoting the staple extractor about the bend.
6. The staple extractor of any one of claims 1 through 5, wherein the pry tip has a single pointed end and a substantially uniform taper.
7. The staple extractor of any one of claims 1 through 6, wherein the pry tip is conical.
8. The staple extractor of any one of claims 4 through 7, wherein the pry tip is marked to indicate the preferred position.
9. The staple extractor of any one of claims 1 through 8, wherein the sliding member comprises an internal bore within which a portion of the shank loosely fits so as to permit relative longitudinal movement between the sliding member and the shank.
10. The staple extractor of any one of claims 1 through 9, wherein the hand operable means comprises a thumb engageable member attached to the sliding member and located proximate the handle.
11. A staple extractor comprising:
a) a handle;
b) a shank attached to the handle at a proximal end of the shank, and having a pry tip at a distal end of the shank;
c) a clamp head engageable with the pry tip and moveably attached to the shank so as to permit movement of the clamp head relative to the shank between a retracted position in which the pry tip and the clamp head are sufficiently distant one from the other so as to permit a staple bridge to be inserted between or removed from between the pry tip and the clamp head, and a clamping position in which the pry tip and clamp head are sufficiently proximate one to the other to releasably secure a staple bridge interposed between them;
d) the clamp head including two opposed wings that, when the clamp head is in the clamping position, straddle the pry tip with each wing on an opposite side of the pry tip one from the other, and wherein each wing is forked and an opening between the forks of one wing is aligned with an opening between the forks of the other wing, such that in use, when the bridge of a staple is positioned between the forks of each wing when the clamp head is in the clamping position, the forks impede movement of the staple bridge along the length of the pry tip during removal of the staple; and e) hand operable means for moving the clamp head between the retracted position and the clamping position;
wherein a staple is removable by, with the clamp head in the retracted position, inserting the pry tip between a staple bridge and the underlying material, moving the clamp head to the clamping position to secure the staple bridge, pulling the thus secured staple from the underlying material, and moving the clamp head to the retracted position to release the extracted staple.
a) a handle;
b) a shank attached to the handle at a proximal end of the shank, and having a pry tip at a distal end of the shank;
c) a clamp head engageable with the pry tip and moveably attached to the shank so as to permit movement of the clamp head relative to the shank between a retracted position in which the pry tip and the clamp head are sufficiently distant one from the other so as to permit a staple bridge to be inserted between or removed from between the pry tip and the clamp head, and a clamping position in which the pry tip and clamp head are sufficiently proximate one to the other to releasably secure a staple bridge interposed between them;
d) the clamp head including two opposed wings that, when the clamp head is in the clamping position, straddle the pry tip with each wing on an opposite side of the pry tip one from the other, and wherein each wing is forked and an opening between the forks of one wing is aligned with an opening between the forks of the other wing, such that in use, when the bridge of a staple is positioned between the forks of each wing when the clamp head is in the clamping position, the forks impede movement of the staple bridge along the length of the pry tip during removal of the staple; and e) hand operable means for moving the clamp head between the retracted position and the clamping position;
wherein a staple is removable by, with the clamp head in the retracted position, inserting the pry tip between a staple bridge and the underlying material, moving the clamp head to the clamping position to secure the staple bridge, pulling the thus secured staple from the underlying material, and moving the clamp head to the retracted position to release the extracted staple.
12. The staple extractor of claim 11, wherein:
a) there is a preferred position along the length of the pry tip at which to locate a staple bridge during removal of a staple;
b) the opening between the forks of each wing is a V-shaped opening in that the edges of the forks defining the opening are substantially rectilinear and the edges of the forks meet at an inner corner; and c) when the clamp head is in the clamping position, the inner corners are aligned with the preferred position;
whereby, in use, when a staple bridge is overlying the pry tip and the clamp head is moved towards the clamping position, when the edges of the forks contact the staple bridge, the edges tend to force the staple bridge towards the inner corners and thus towards the preferred position.
a) there is a preferred position along the length of the pry tip at which to locate a staple bridge during removal of a staple;
b) the opening between the forks of each wing is a V-shaped opening in that the edges of the forks defining the opening are substantially rectilinear and the edges of the forks meet at an inner corner; and c) when the clamp head is in the clamping position, the inner corners are aligned with the preferred position;
whereby, in use, when a staple bridge is overlying the pry tip and the clamp head is moved towards the clamping position, when the edges of the forks contact the staple bridge, the edges tend to force the staple bridge towards the inner corners and thus towards the preferred position.
13. The staple extractor of any one of claims 11 and 12, wherein the clamp head is attached to a sliding member that is moveably attached to the shank so as to permit relative longitudinal movement between the sliding member and the shank, and thus between the clamp head and the shank.
14. The staple extractor of claim 13, wherein the sliding member comprises an internal bore within which a portion of the shank loosely fits so as to permit relative longitudinal movement between the sliding member and the shank
15. The staple extractor of any one of claims 13 and 14, wherein the hand operable means comprises a thumb engageable member attached to the sliding member and located proximate the handle.
16. The staple extractor of any one of claims 11 through 15, wherein the shank has a bend proximal the pry tip, wherein in use, a mechanical advantage in removing a staple is obtainable by resting the outside of the bend against the workpiece and pivoting the staple extractor about the bend.
17. The staple extractor of any one of claims 11 through 16, wherein the pry tip has a single pointed end and a substantially uniform taper.
18. The staple extractor of any one of claims 11 through 17, wherein the pry tip is conical.
19. The staple extractor of any one of claims 12 through 18, wherein the pry tip is marked to indicate the preferred position.
20. A staple extractor comprising:
a) a handle;
b) a shank attached to the handle at a proximal end of the shank and having a bend proximate a distal end of the shank;
c) a conical pry tip at the distal end of the shank, distal the bend, for inserting under the bridge of a staple during extraction of the staple;
and d) a clamp head moveably attached to the shank so as to be moveable relative to the shank between a retracted position in which the pry tip and the clamp head are sufficiently distant one from the other so as to permit a staple bridge to be inserted between or removed from between the pry tip and the clamp head, and a clamping position in which the pry tip and clamp head are sufficiently proximate one to the other to releaseably secure a staple bridge interposed between them;
the clamp head including two opposed wings that, when the clamp head is in the clamping position, straddle the pry tip with each wing on an opposite side of the pry tip one from the other, and wherein each wing is forked and an opening between the forks of one wing is aligned with an opening between the forks of the other wing, such that in use, when the bridge of a staple is positioned between the forks of each wing when the clamp head is in the clamping position, the forks impede movement of the staple bridge along the length of the pry tip during removal of the staple;
wherein a staple is removable by, with the clamp head in the retracted position, inserting the pry tip between a staple bridge and the underlying material, moving the clamp head to the clamping position to secure the staple bridge, pulling the thus secured staple from the underlying material, and moving the clamp head to the retracted position to release the extracted staple.
a) a handle;
b) a shank attached to the handle at a proximal end of the shank and having a bend proximate a distal end of the shank;
c) a conical pry tip at the distal end of the shank, distal the bend, for inserting under the bridge of a staple during extraction of the staple;
and d) a clamp head moveably attached to the shank so as to be moveable relative to the shank between a retracted position in which the pry tip and the clamp head are sufficiently distant one from the other so as to permit a staple bridge to be inserted between or removed from between the pry tip and the clamp head, and a clamping position in which the pry tip and clamp head are sufficiently proximate one to the other to releaseably secure a staple bridge interposed between them;
the clamp head including two opposed wings that, when the clamp head is in the clamping position, straddle the pry tip with each wing on an opposite side of the pry tip one from the other, and wherein each wing is forked and an opening between the forks of one wing is aligned with an opening between the forks of the other wing, such that in use, when the bridge of a staple is positioned between the forks of each wing when the clamp head is in the clamping position, the forks impede movement of the staple bridge along the length of the pry tip during removal of the staple;
wherein a staple is removable by, with the clamp head in the retracted position, inserting the pry tip between a staple bridge and the underlying material, moving the clamp head to the clamping position to secure the staple bridge, pulling the thus secured staple from the underlying material, and moving the clamp head to the retracted position to release the extracted staple.
21. The staple extractor of claim 20, wherein:
a) there is a preferred position along the length of the pry tip at which to locate a staple bridge during removal of a staple;
b) the opening between the forks of each wing is a V-shaped opening in that the edges of the forks defining the opening are substantially rectilinear and the edges of the forks meet at an inner corner; and c) when the clamp head is in the clamping position, the inner corners are aligned with the preferred position;
whereby, in use, when a staple bridge is overlying the pry tip and the clamp head is moved towards the clamping position, when the edges of the forks contact the staple bridge, the edges tend to force the staple bridge towards the inner corners and thus towards the preferred position.
a) there is a preferred position along the length of the pry tip at which to locate a staple bridge during removal of a staple;
b) the opening between the forks of each wing is a V-shaped opening in that the edges of the forks defining the opening are substantially rectilinear and the edges of the forks meet at an inner corner; and c) when the clamp head is in the clamping position, the inner corners are aligned with the preferred position;
whereby, in use, when a staple bridge is overlying the pry tip and the clamp head is moved towards the clamping position, when the edges of the forks contact the staple bridge, the edges tend to force the staple bridge towards the inner corners and thus towards the preferred position.
22. The staple extractor of any one of claims 20 and 21, wherein the clamp head is attached to a sliding member that is moveably attached to the shank so as to permit relative longitudinal movement between the sliding member and the shank, and thus between the clamp head and the shank.
23. The staple extractor of claim 22, wherein the sliding member comprises an internal bore within which a portion of the shank loosely fits so as to permit relative longitudinal movement between the sliding member and the shank
24. The staple extractor of any one of claims 22 and 23, wherein there is a thumb engageable member attached to the sliding member and located proximate the handle.
25. The staple extractor of any one of claims 21 through 24, wherein the pry tip is marked to indicate the preferred position.
26. A staple extractor comprising a) a handle;
b) a shank attached to the handle at a proximal end of the shank and having a bend proximate the distal end of the shank;
c) a conical pry tip at the distal end of the shank, distal the bend and marked to indicate a preferred position along the length of the pry tip at which to locate a staple bridge for extraction of the staple;
d) a sliding member having an internal bore within which a portion of the shank loosely fits so as to permit relative longitudinal movement between the sliding member and the shank;
e) a clamp head attached to the sliding member and located proximate the pry tip, the clamp head comprising two opposed forked wings with an opening between the forks of each wing being a V-shaped opening in that the edges of the forks defining the opening are substantially rectilinear and the edges of the forks meet at an inner corner, and with the opening between the forks of one wing aligned with the opening between the forks of the other wing; and f) a thumb engageable member attached to the sliding member and located proximate the handle for moving the sliding member longitudinally relative to the shank between a retracted position in which the pry tip and the clamp head are sufficiently distant one from the other so as to permit a staple bridge to be inserted between or removed from between the pry tip and the clamp head, and a clamping position in which the pry tip and clamp head are sufficiently proximate one to the other such that the wings straddle the pry tip, with one wing on each side of the and the inner corners are aligned with the preferred position, such that a staple bridge in the vicinity of the preferred position is clamped between the pry tip and the clamp head, and straddled by each pair of forks so as to impede movement of the bridge along the length of the pry tip;
wherein a staple is removable by, with the sliding member in the retracted position, inserting the pry tip between a staple bridge and the underlying material, moving the sliding member to the clamping position to secure the staple bridge, pulling the thus secured staple from the underlying material, and moving the sliding member to the retracted position to release the extracted staple.
b) a shank attached to the handle at a proximal end of the shank and having a bend proximate the distal end of the shank;
c) a conical pry tip at the distal end of the shank, distal the bend and marked to indicate a preferred position along the length of the pry tip at which to locate a staple bridge for extraction of the staple;
d) a sliding member having an internal bore within which a portion of the shank loosely fits so as to permit relative longitudinal movement between the sliding member and the shank;
e) a clamp head attached to the sliding member and located proximate the pry tip, the clamp head comprising two opposed forked wings with an opening between the forks of each wing being a V-shaped opening in that the edges of the forks defining the opening are substantially rectilinear and the edges of the forks meet at an inner corner, and with the opening between the forks of one wing aligned with the opening between the forks of the other wing; and f) a thumb engageable member attached to the sliding member and located proximate the handle for moving the sliding member longitudinally relative to the shank between a retracted position in which the pry tip and the clamp head are sufficiently distant one from the other so as to permit a staple bridge to be inserted between or removed from between the pry tip and the clamp head, and a clamping position in which the pry tip and clamp head are sufficiently proximate one to the other such that the wings straddle the pry tip, with one wing on each side of the and the inner corners are aligned with the preferred position, such that a staple bridge in the vicinity of the preferred position is clamped between the pry tip and the clamp head, and straddled by each pair of forks so as to impede movement of the bridge along the length of the pry tip;
wherein a staple is removable by, with the sliding member in the retracted position, inserting the pry tip between a staple bridge and the underlying material, moving the sliding member to the clamping position to secure the staple bridge, pulling the thus secured staple from the underlying material, and moving the sliding member to the retracted position to release the extracted staple.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002507269A CA2507269C (en) | 2005-05-10 | 2005-05-10 | Staple extractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002507269A CA2507269C (en) | 2005-05-10 | 2005-05-10 | Staple extractor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2507269A1 CA2507269A1 (en) | 2005-08-28 |
| CA2507269C true CA2507269C (en) | 2007-07-17 |
Family
ID=34866014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002507269A Expired - Fee Related CA2507269C (en) | 2005-05-10 | 2005-05-10 | Staple extractor |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2507269C (en) |
-
2005
- 2005-05-10 CA CA002507269A patent/CA2507269C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2507269A1 (en) | 2005-08-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4991764A (en) | Surgical stapling instrument | |
| CN201949071U (en) | Linear type cutting suturing device | |
| CA1136508A (en) | Surgical tool | |
| US6409152B1 (en) | Method and apparatus for a tack tool | |
| WO2005053785A3 (en) | Multi-function clamping device with stapler and ablation heads | |
| US8657823B2 (en) | Rongeur with detachable tips | |
| US6540964B2 (en) | Pipette for a pipette system | |
| US7966681B2 (en) | Multi-function pipe cutting and fitting tool | |
| US6066143A (en) | Pin puller | |
| US8167271B2 (en) | Staple extractor | |
| CA2507269C (en) | Staple extractor | |
| CN101991450A (en) | Linear seam cutting device | |
| US7090198B1 (en) | Magnetic staple remover | |
| US4205823A (en) | Staple remover | |
| US2239314A (en) | Cobbler's tool | |
| CN213560766U (en) | A kind of steel welding auxiliary tool | |
| CN215384298U (en) | Needle holding forceps for operation | |
| US20180297827A1 (en) | Extracting devices and related methods | |
| CN209289169U (en) | A kind of puller of aircraft nut split pin | |
| CN102138815B (en) | Suture device for surgical operation | |
| CN220714011U (en) | Surgical nail clamp | |
| US7490534B2 (en) | Cork extractor apparatus and method | |
| CN218965318U (en) | Nail puller | |
| CN219068851U (en) | a weed puller | |
| TWI343303B (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20200831 |
|
| MKLA | Lapsed |
Effective date: 20200831 |