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WO2004067250A2 - Outil de sertissage sans dent pour connecteurs de conduit en plastique - Google Patents

Outil de sertissage sans dent pour connecteurs de conduit en plastique Download PDF

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Publication number
WO2004067250A2
WO2004067250A2 PCT/US2004/002225 US2004002225W WO2004067250A2 WO 2004067250 A2 WO2004067250 A2 WO 2004067250A2 US 2004002225 W US2004002225 W US 2004002225W WO 2004067250 A2 WO2004067250 A2 WO 2004067250A2
Authority
WO
WIPO (PCT)
Prior art keywords
cylindrical
plastic pipe
jaws
crimping tool
crimp
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.)
Ceased
Application number
PCT/US2004/002225
Other languages
English (en)
Other versions
WO2004067250A3 (fr
Inventor
Richard A. Steiner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ROSTRA TOOL Co
Original Assignee
ROSTRA TOOL Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ROSTRA TOOL Co filed Critical ROSTRA TOOL Co
Priority to US10/544,162 priority Critical patent/US20060048560A1/en
Publication of WO2004067250A2 publication Critical patent/WO2004067250A2/fr
Publication of WO2004067250A3 publication Critical patent/WO2004067250A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
    • B25B27/146—Clip clamping hand tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/04—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes with tubes; of tubes with rods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
    • B25B27/10—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same inserting fittings into hoses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B7/00—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools
    • B25B7/12—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools involving special transmission means between the handles and the jaws, e.g. toggle levers, gears

Definitions

  • the present invention relates to crimping tools generally and, more particularly, but not by way of limitation, to a novel crimping tool for plastic pipe connectors and method of use thereof, the tool having toothless jaws. Also provided is such a tool that can be used to gauge whether crimps have been properly made.
  • the present invention is concerned with crimping, typically although not necessarily, copper alloy metallic rings around polyethylene plastic pipe to attach the pipe to metallic fittings.
  • the fillings may be tee fittings or coupling fittings, for example.
  • Such plastic pipe has become more and more used in construction, as it is relatively inexpensive and much more inexpensive to install.
  • a disadvantage of conventional crimping tools is that the jaws thereof are interlocking, with teeth at the top and bottom of one jaw in the opening defined by the jaws interfitting with complementarily shaped slots defined in the other jaw. As a consequence, the resulting marks and imperfections, or skiving and gouging of the crimped rings, caused by the interlocking teeth on the rings are unsightly.
  • interlocking teeth requires that the opening defined by the jaws be located a relatively large distance from the pivot points of the jaws, in order to increase the required mechanical advantage, a relatively high force is required to crimp the rings. Also, the presence of the interlocking teeth does not allow a great degree of freedom in skew of the pipe being crimped and the toothed jaws are likely to cause skewed crimped rings.
  • the degree of crimping of a ring is determined by gauging with a separate tool to make sure that the crimping ring has been crimped to an ASTM-specified diameter.
  • the separate tool is typically a flat piece of metal having outwardly open, semi-circular openings defined therethrough, one pair of openings being provided for each size crimp to be gauged.
  • One of the openings is a NO GO opening, meaning that, if a crimped ring can be inserted into the NO GO opening, then that crimped ring does not meet ASTM specifications for crimping because the crimp is undersized.
  • the ring can be inserted in the other of the openings, which is a GO opening, then the ASTM specification for crimping has been met, provided that the ring cannot be inserted into the NO GO opening. If the ring cannot be inserted into the GO opening, then the crimped ring does not meet the ASTM requirements for crimping because the crimp is oversized. While the separate tool is satisfactory, it does require that the separate tool be kept in the vicinity of the work, and is subject to be lost or misplaced. The separate tool also requires that the crimping tool be removed from the work area or set aside while the crimping ring is gauged.
  • a crimping tool to crimp a cylindrical rings about cylindrical plastic pipe, comprising: first and second handles operative to open and close first and second jaws, respectively, pivotally attached, respectively, to proximal ends of said first and second handles and to each other; and said first and second jaws being toothless and defining therebetween, when said first and second jaws are closed, a cylindrical opening, said cylindrical opening to crimp said cylindrical ring about said cylindrical plastic pipe, and to produce a tight seal between said cylindrical plastic pipe and a cylindrical substrate over which said cylindrical plastic pipe is inserted.
  • a method of using said crimping tool is provided, as is using said crimping tool as a crimping gauge.
  • Figure 1 is a side elevational view of a crimping tool constructed according to the present invention.
  • Figure 2 is a side elevational view of a coupling fitting with which the present invention may be used.
  • Figure 3 is a side elevational view of an end of a length of plastic pipe.
  • Figure 4 is a side elevational view of a tee fitting with which the present invention may be used.
  • Figure 5 is a fragmentary, side elevational view of the tool in position to crimp a ring around an end of plastic pipe.
  • Figure 6 is a fragmentary, side elevational view of the tool crimping a ring around an end of plastic pipe.
  • Figure 7 is a fragmentary, side elevational view of another embodiment of a tool according to the present invention being used to gage the degree of crimping of a crimped ring.
  • FIG. 1 illustrates a crimping tool, constructed according to the present invention, and generally indicated by the reference numeral 20.
  • Crimping tool 20 includes first and second handles 30 and 32 pivotally connected by a pin 34. Pivotally connected, respectively, to handles 30 and 32 by pins 40 and 42 disposed at the proximal ends of the handles are first and second toothless ja- s 44 and 46. First and second toothless jaws 44 and 46 are pivotally joined, respectively, by a link 50 extending between pins 52 and 54 disposed at approximately the midpoint of the jaws.
  • a conventional ratchet mechanism 60 is disposed between handles 30 and 32. Since ratchet mechanism 60 is well known in the art, no further description thereof will be provided.
  • a conventional adjustable linkage may also be provided in place of ratchet mechanism 60.
  • FIG 2 illustrates a coupling fitting with which the crimping tool of the present invention may be used, the coupling being generally indicated by the reference numeral 100.
  • Coupling fitting 100 includes two barbs 110 and 1 2 extending axially from a central portion 114.
  • Figure 3 A illustrates the end of a length of plastic pipe 120.
  • Figure 3B illustrates a cylindrical copper alloy ring 130.
  • FIG. 3C illustrates a tee fitting with which the crimping tool of the present invention may be used, the tee fitting being generally indicated by the reference numeral 140.
  • Tee fitting 140 includes three barbs 142, 144, and 146 extending from a central portion 148, as shown.
  • Figure 4 illustrates plastic pipes 120 inserted over barbs 142 and 146, with crimping rings 130 disposed therearound. It will be understood that pipes 120 and rings 130 have been inserted over barbs 142 and 146 by being moved in the directions shown by the arrows on Figures 3 A and 3B.
  • the left side of Figure 4 shows crimping ring 130 uncrimped, while the right side of Figure 4 shows crimping ring 130 crimped.
  • the diameter of crimping ring 130 is decreased by about four to six percent and the length thereof is increased by about one and one-half to about five percent, to form a tight seal to be formed between plastic pipe 120 and barb 146.
  • the width of first and second toothless jaws 44 and 46 is somewhat greater than the width of crimped crimping ring 130.
  • Figure 5 illustrates crimping ring 130 inserted over plastic pipe 120, the latter having been inserted over barb 146, with crimping tool 20 in an open position and having jaws 44 and 46 spread apart and in position to crimp the crimping ring around the plastic pipe.
  • Figure 6 illustrates that first and second toothless jaws 44 and 46 have been moved to their closed position, crimping ring 130 about plastic pipe 120.
  • smooth surfaces 160 and 162 and smooth surfaces 164 and 166, at the top and the bottom, respectively, of opening 70 ( Figure 1) are in abutting relationship and that the opening defined by the ja-ws is substantially cylindrical.
  • Smooth surfaces 160 and 162 and smooth surfaces 164 and 166 abut in a common plane.
  • crimping tool 20 first forms crimping ring into an oval shape and then into a circular shape. Unsightly marks and imperfections, or skiving and gouging, on the outer periphery of crimping ring 130 are thus eliminated or minimized, resulting in a more professional appearance.
  • pipe 120 can be skewed as much as 15 percent from the axis of opening 70 and tool 20 will compensate for this skew by straightening out the pipe and producing a tight seal, a feature not possible with conventional toothed jaws that tend to produce a skewed crimped crimping ring 130.
  • crimping tool 20 ( Figure 1) with the conventional crimping tools shown in the Catalog Brochure titled SARGENT QUALITY TOOLS - PROFESSIONAL PLUMBING TOOLS, by Rostra Tool Company, Branford, Connecticut, it can be seen that opening 70 and pivot pins 52 and 54 are located substantially closer together on crimping tool 20 than are the like elements on the conventional crimping tools. For a W crimping tool 20, this distance is about 2.8-3.0 centimeters versus about 3.5 centimeters for a conventional crimping tool. This placement means that mechanical advantage can be increased with crimping tool 20 and the crimping force is reduced by about 15- 20 percent.
  • the crimping force for example, required by a V_" tool constructed according to the present invention is about 60 to 70 pounds applied 1-3/4" from the distal ends of handles 30 and 32. The additional mechanical gain also leads to greater tool life and less field calibration.
  • Crimping tool 20 minimizes distortion of crimping rings 130 not crimping accurately 90° perpendicular to the pipe and fitting axes. Cold working of crimped rings 130 is achieved without the resistance in the tooth and valley areas of conventional toothed jaws. Because of the increased mechanical advantage, tool 20 can be made lighter than conventional toothed crimping tools and, therefore, user fatigue is minimized and productivity is improved.
  • FIG. 7 there is illustrated an alternative embodiment of crimping tool 20 (Figure 1), this embodiment indicated generally by the reference numeral 20'.
  • Elements of crimping tool 20' having the same or similar functions as elements of crimping tool 20' are given primed reference numerals.
  • Crimping tool 20' includes a set screw 200 threadingly inserted through first toothless jaw 44', the distal end 202 of set screw 200 bearing against the inside surface of second toothless jaw 46' to limit the distance apart first and second toothless jaws 44' and 46' can be opened.
  • Set screw 200 is thus used to adjust distance "A" between, respectively, smooth surfaces 160' and 162' of first and second toothless jaws 44' and 46' when the first and second toothless jaws are opened fully.
  • This distance is set to the ASTM specification for crimped rings of the size for which crimping tool 20' is designed.
  • crimping tool 20' can be used to pass over crimped crimping ring 130 to verify that the crimping ring has been crimped to the proper diameter.
  • crimping tool 20' acts as a crimp gauge, eliminating inspection with an independent tool. Such would be difficult, if not impossible, with toothed jaws.
  • crimping ring 130 is slid over plastic pipe 120. Then, plastic pipe 120 is pushed over barb 142 and the crimping ring 130 is positioned to approximately the middle of the barb. Then, crimping tool 20 ( Figure 5) is opened and moved over crimping ring 130. Then, crimping tool 20 ( Figure 6) is frilly closed so that smooth surfaces 160 and 162 and smooth surfaces 164 and 166 are in abutting relationship. Then, crimping ring 130 is gauged to make sure that the crimping step has been done properly. If tool crimping 20' is employed, that tool itself is used to verify that the crimping step has been done properly.
  • the crimping tools 20 may be sized to accommodate crimping rings 130 for pipe sizes 3/8", 1/2", 5/8", 3 A", 1", and 1-1/4", for example.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
  • Manufacturing Of Electrical Connectors (AREA)

Abstract

Dans un mode réalisation préféré, l'invention concerne un outil de sertissage pour sertir un anneau cylindrique autour d'un conduit en plastique cylindrique. Cet outil comprend : des premières et secondes poignées permettant d'ouvrir et de fermer respectivement des premières et secondes mâchoires, fixées rotativement aux extrémités proximales respectives des premières et secondes poignées et fixées les unes aux autres, les premières et secondes mâchoires étant sans dent et définissant entre elles, lorsque les premières et secondes mâchoires sont fermées, une ouverture cylindrique, cette ouverture cylindrique servant à sertir l'anneau cylindrique autour du conduit en plastique cylindrique, et à produire un joint hermétique entre le conduit en plastique cylindrique et un substrat cylindrique sur lequel le conduit en plastique cylindrique est inséré. L'invention se rapporte aussi à un procédé d'utilisation de l'outil de sertissage qui est utilisé en tant que jauge de sertissage.
PCT/US2004/002225 2003-01-29 2004-01-28 Outil de sertissage sans dent pour connecteurs de conduit en plastique Ceased WO2004067250A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US10/544,162 US20060048560A1 (en) 2003-01-29 2004-01-28 Toothless crimpling tool for plastic pipe connectors

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/353,615 2003-01-29
US10/353,615 US20040144154A1 (en) 2003-01-29 2003-01-29 Crimping tool for plastic pipe connectors, with toothless jaws, and method of use

Publications (2)

Publication Number Publication Date
WO2004067250A2 true WO2004067250A2 (fr) 2004-08-12
WO2004067250A3 WO2004067250A3 (fr) 2004-10-28

Family

ID=32736216

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/002225 Ceased WO2004067250A2 (fr) 2003-01-29 2004-01-28 Outil de sertissage sans dent pour connecteurs de conduit en plastique

Country Status (2)

Country Link
US (2) US20040144154A1 (fr)
WO (1) WO2004067250A2 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080115556A1 (en) * 2006-11-22 2008-05-22 Thomas Hughes Emergency Flow Stoppage Tool
US7628052B2 (en) * 2007-06-10 2009-12-08 Tianjin Runshi Science Development Co., Ltd. Hand crimping tool interchangeable and interactive jaws
US8590352B2 (en) * 2011-11-23 2013-11-26 Emerson Electric Co. Integral inspection gauge for manual crimping tool
US9248560B2 (en) * 2012-02-01 2016-02-02 Oetiker Tool Corporation Crimping tool
US9327391B2 (en) 2012-02-01 2016-05-03 Oetiker Tool Corporation Crimping tool
USD739198S1 (en) * 2012-07-02 2015-09-22 Mil3 Inc. Pipe crimping tool with associated collar attachment
USD778701S1 (en) * 2015-11-09 2017-02-14 Oetiker Tool Corporation Tool
USD783377S1 (en) * 2015-11-09 2017-04-11 Oetiker Tool Corporation Tool
USD796927S1 (en) * 2015-11-13 2017-09-12 Gustav Klauke Gmbh Crimping tool
USD820060S1 (en) * 2016-09-27 2018-06-12 Milwaukee Electric Tool Corporation Jaw assembly
USD900572S1 (en) 2018-09-07 2020-11-03 Oetiker Tool Corporation Tool
USD901272S1 (en) * 2020-07-23 2020-11-10 Shenzhenshi Qinbaokeji Youxiangongsi Crimping tool

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US256525A (en) * 1882-04-18 whiting
US2064129A (en) * 1934-12-08 1936-12-15 Jr Robert Temple Method and apparatus for forming joints
US2102325A (en) * 1936-06-09 1937-12-14 Boeing Aircraft Co Airplane control rod and method of making the same
US2327650A (en) * 1940-01-04 1943-08-24 Nat Telephone Supply Co Wire connecting sleeve
US2861489A (en) * 1956-01-30 1958-11-25 Kelsey Hayes Co Pivot lever retainer for ratchet powered device
US2931264A (en) * 1956-02-10 1960-04-05 Gen Dynamics Corp Threaded nut adapted to be laterally applied to bolt and subsequently constricted toengagement with bolt threads
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Also Published As

Publication number Publication date
US20040144154A1 (en) 2004-07-29
US20060048560A1 (en) 2006-03-09
WO2004067250A3 (fr) 2004-10-28

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