[go: up one dir, main page]

US3299720A - Piston pump with transverse thread actuator - Google Patents

Piston pump with transverse thread actuator Download PDF

Info

Publication number
US3299720A
US3299720A US383756A US38375664A US3299720A US 3299720 A US3299720 A US 3299720A US 383756 A US383756 A US 383756A US 38375664 A US38375664 A US 38375664A US 3299720 A US3299720 A US 3299720A
Authority
US
United States
Prior art keywords
sleeve
housing
slot
drive
cam follower
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 - Lifetime
Application number
US383756A
Inventor
Sr Henry Andrew Schudalla
Jr Henry Andrew Schudalla
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.)
MID CONTINENT STEEL CASTING CO
MID-CONTINENT STEEL CASTING Corp
Original Assignee
MID CONTINENT STEEL CASTING 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 MID CONTINENT STEEL CASTING CO filed Critical MID CONTINENT STEEL CASTING CO
Priority to US383756A priority Critical patent/US3299720A/en
Application granted granted Critical
Publication of US3299720A publication Critical patent/US3299720A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/08—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for interconverting rotary motion and reciprocating motion
    • F16H25/12—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for interconverting rotary motion and reciprocating motion with reciprocation along the axis of rotation, e.g. gearings with helical grooves and automatic reversal
    • F16H25/122—Gearings with helical grooves and automatic reversal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18056—Rotary to or from reciprocating or oscillating
    • Y10T74/18296—Cam and slide
    • Y10T74/18304—Axial cam
    • Y10T74/18312—Grooved

Definitions

  • the principal object of this invention is to provide an improved pump of the above class which is particularly eflicient for use as a mud pump.
  • FIG. 1 is a perspective view showing a preferred embodiment of this new pump
  • FIG. 2 is an enlarged sectional view taken on the line 2-2 of FIG. 1,
  • FIG. 3 is a cross sectional view taken on the line 33 of FIG. 2, and
  • FIG. 4 is an enlarged exploded perspective view of this pump to more clearly illustrate the construction thereof.
  • an elongated cylindrical housing 10 includes a drive end 11 which terminates in the flange 12 and a working end 13 which terminates in the flange 14.
  • Housing 10 is provided intermediate flanges 12 and 14 with the slot 16 over which there is mounted the removable cover or cap 18 by any suitable means such as the screws 20.
  • Slidably journalled within housing 10 is the cylindrical working sleeve or driven member 22 having a closed end 24 relative to flange 14 and open at the opposite end 26. Vent holes 28 are provided in end 24 to prevent formation of any vacuum as will become apparent.
  • a piston rod 32 which slidably extends through and is supported by the flange cap 34 that is secured to flange 14 as by the bolts 36.
  • Such rod 32 will be attached to a piston (not shown) for driving the same in any suitable manner.
  • Cap 34 is counterbored for a grease seal 38 that will contain a lubricant for housing 10 and such housing is provided with three spaced longitudinal grooves or flukes 40 (FIG. 3) on its internal wall to provide a passageway for such lubricant.
  • a rotatable drive member in the form of the gear rod 42 is disposed within housing 10 and includes end 44 that is journalled in end 26 of sleeve 22 for support, an intermediate section provided with a transverse thread 46 and a drive end 48 that is rotatably journalled in a flange cap 50 which is secured to flange 12 as by bolts 52.
  • Cap 50 is counter-bored for a grease seal 54 similar to cap 34 and in relation to the drive end 48 of rod 42
  • housing 10 is "ice counter-bored to support a spherical roller bearing assembly 56 that is mounted on rod 42 and is contained in 'place by a suitable snap ring 58.
  • a gasket means 60 may be provided between flanges 12 and 50 in a well known manner.
  • An opening 62 (FIG. 4) is provided in sleeve 22 which can be made to register with slot 16 in housing whereby it will also register with the transverse threads 46 as best seen in FIG. 2, and a two pronged cam follower 64 having a head portion '66 has its pronged portion passed through slot 16 and opening 62 to partially embrace rod 46 at its transverse thread portion 46.
  • Cap portion 66 is slidable in slot 16 within the limits thereof and also serves to keep sleeve 22 from rotating. In this regard, it will be understood of course that'cover 18 is removed for insertion of follower 64 and then replaced to keep the follower thus contained.
  • any suitable source of power may be employed to rotate rod 42 by attachment to rod end 48 and as rod 42 is thus rotated about its longitudinal axis, follower 64 will follow the threads 46 and thus transfer the force from a rotary motion to a rectilinear motion by pushing sleeve 22 which correspondingly pushes the piston rod 32.
  • the length of threads 46 may be predetermined end as the follower 64 reaches one end, it will follow the threads for a return travel so as to provide the usual reciprocating movement of piston rod 32.
  • a piston pump mechanism for converting rotary motion into reciprocating motion comprising:
  • a cylindrical housing having a drive end and a working end
  • said housing provided with a slot intermediate said ends
  • said sleeve having an opening adapted to register with said slot
  • a drive rod in said housing having one end rotatably journalled in said sleeve and the other end extended through the cap on said drive end for attachment to a source of power to impart a rotary motion thereto about its longitudinal axis
  • a piston pump mechanism for converting rotary motion into reciprocating motion comprising:
  • a cylindrical housing having a drive end and a working end
  • said housing being provided with a slot intermediate said ends
  • said sleeve having an opening adapted to register with said slot
  • a drive rod in said housing having one end rotatably journalled in said sleeve and the other end projecting from said drive end for attachment to a source of power
  • cam follower means disposed through said slot and said opening for traclcable engagement with said transverse threads
  • cam follower means being engaged with said sleeve to impart reciprocal motion thereto upon rotation of said drive rod
  • a piston pump mechanism for converting rotary motion into reciprocating motion comprising:
  • a piston pump mechanism for converting rotary motion into reciprocating motion comprising:
  • cam follower means slidable in said slot through said aperture and extending transversely into said sleeve for tracking engagement with said transverse threads to impart a reciprocal motion to said sleeve upon rotation of said drive rod
  • a device as defined in claim 4 where said cam follower means includes spaced prongs for partially embracing said drive rod and a head portion slidable in said slot and enga-geable with said sleeve for reciprocating the same.
  • cam follower means serves to prevent rotary motion of said sleeve.
  • a device as defined in claim 4 including means carried by said housing to prevent accidental displacement of said cam follower means from said slot and aperture.
  • a piston pump mechanism for converting rotary motion into reciprocating motion comprising:
  • a rotating dri've member with longitudinally extending transverse threads disposed at one end in said driven member and the other end of said driven member adapted for attachment to a source of power
  • a piston pump mechanism for converting rotary motion into reciprocating motion comprising:
  • a rotating drive member with longitudinally extending transverse threads dispose-d at one end in said driven member and the other end of said driven member :adapted for attachment to a source of power, and
  • cam follower means slidable in said slot through said aperture and extending transversely into said driven member for tracking engagement with said transverse threads to impart a reciprocal motion to said driven member upon rotation of said drive member.
  • a device as defined in claim 9 including means carried by said housing to prevent accidental displacement of said cam follower means from said slot and aperture.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Reciprocating Pumps (AREA)

Description

Jan. 1967 H. A. SCHUDALLA, SR, ETAL 3,
PISTON PUMP WITH TRANSVERSE THREAD ACTUATOR Filed July 20, l964 2 Sheets-Sheet 1 Maw/0w. HEW/P) AA/DfifWJCf/UDAZA 4, 5/2 HEMP) r4/Y0P4W Jaw/0,4414, JAZ
Jan. 24, 1967 H. A. SCHUDALLA, SR. ETAL 3,299,720
PISTON PUMP WITH TRANSVERSE THREAD ACTUATOR Filed July 20, 1964 2 Sheets-Sheet 2 l/f/vram HEN/9y ANDREW Jaw/041m, 5A2 HENRY AWQQEW 50/0041 1 4, (/0.
14770A /VEK United States Patent 3,299,720 PISTON PUMP WITH TRANSVERSE THREAD ACTUATOR Henry Andrew Schudalia, SE. and Henry Andrew Schudalla, in, Shreveport, La., assignors, by mesne assignments, to Mid-Continent Steel Casting Corporation, a corporation of Louisiana Filed July 20, 1964, Ser. No. 383,756 11 Claims. (CI. 7457) This invention relates to improvements in pumping mechanism of the type wherein rotary motion is converted into rectilinear motion for the reciprocal operation of a piston.
The principal object of this invention is to provide an improved pump of the above class which is particularly eflicient for use as a mud pump.
Among several other objects to this end it is sought to provide an improved pump wit-h a transverse thread actuator that:
Requires fewer parts than many like pumps with the result that costs of manufacture are materially reduced,
Requires a minimum of space for installation and can be mounted in any desired position,
Is simplified in construct-ion and yet is highly eflicient for its intended purpose, and
Is capable of developing a large amount of p.s.i. with a minimum torque input.
Further objects and the more obvious advantages of the invention will be mentioned or else appear plainly from the description which follows.
This invention consists of novel parts and combination of parts to be hereinafter described whereby the objects set forth are attained, as pointed out in the claims, and illustrated in the accompanying drawings, in which:
FIG. 1 is a perspective view showing a preferred embodiment of this new pump,
FIG. 2 is an enlarged sectional view taken on the line 2-2 of FIG. 1,
FIG. 3 is a cross sectional view taken on the line 33 of FIG. 2, and
FIG. 4 is an enlarged exploded perspective view of this pump to more clearly illustrate the construction thereof.
Referring to the drawings, an elongated cylindrical housing 10 includes a drive end 11 which terminates in the flange 12 and a working end 13 which terminates in the flange 14. Housing 10 is provided intermediate flanges 12 and 14 with the slot 16 over which there is mounted the removable cover or cap 18 by any suitable means such as the screws 20. Slidably journalled within housing 10 is the cylindrical working sleeve or driven member 22 having a closed end 24 relative to flange 14 and open at the opposite end 26. Vent holes 28 are provided in end 24 to prevent formation of any vacuum as will become apparent. On the outer side of the end 24 suitable bearing means 30 are provided for attachment of a piston rod 32 which slidably extends through and is supported by the flange cap 34 that is secured to flange 14 as by the bolts 36. Such rod 32 will be attached to a piston (not shown) for driving the same in any suitable manner. Cap 34 is counterbored for a grease seal 38 that will contain a lubricant for housing 10 and such housing is provided with three spaced longitudinal grooves or flukes 40 (FIG. 3) on its internal wall to provide a passageway for such lubricant.
A rotatable drive member in the form of the gear rod 42 is disposed within housing 10 and includes end 44 that is journalled in end 26 of sleeve 22 for support, an intermediate section provided with a transverse thread 46 and a drive end 48 that is rotatably journalled in a flange cap 50 which is secured to flange 12 as by bolts 52. Cap 50 is counter-bored for a grease seal 54 similar to cap 34 and in relation to the drive end 48 of rod 42, housing 10 is "ice counter-bored to support a spherical roller bearing assembly 56 that is mounted on rod 42 and is contained in 'place by a suitable snap ring 58. A gasket means 60 may be provided between flanges 12 and 50 in a well known manner.
An opening 62 (FIG. 4) is provided in sleeve 22 which can be made to register with slot 16 in housing whereby it will also register with the transverse threads 46 as best seen in FIG. 2, and a two pronged cam follower 64 having a head portion '66 has its pronged portion passed through slot 16 and opening 62 to partially embrace rod 46 at its transverse thread portion 46. Cap portion 66 is slidable in slot 16 within the limits thereof and also serves to keep sleeve 22 from rotating. In this regard, it will be understood of course that'cover 18 is removed for insertion of follower 64 and then replaced to keep the follower thus contained.
In operation, any suitable source of power may be employed to rotate rod 42 by attachment to rod end 48 and as rod 42 is thus rotated about its longitudinal axis, follower 64 will follow the threads 46 and thus transfer the force from a rotary motion to a rectilinear motion by pushing sleeve 22 which correspondingly pushes the piston rod 32. The length of threads 46 may be predetermined end as the follower 64 reaches one end, it will follow the threads for a return travel so as to provide the usual reciprocating movement of piston rod 32.
While no invention is claimed per se in the use of a rod with transverse threads, it is pointed out that the present structure represents a material improvement over present pumps utilizing this principle because of the minimum number of parts required, the high degree of efliciency obtained and the low cost of manufacture obtainable. Consequently, from the foregoing description'it is thought a full understanding of the construction and operation of this invention will be had and that the advantages of the same will be appreciated.
It will be understood that the phraseology employed herein is for the purpose of description and not for limitation and that modifications and changes in the construction and arrangement of this invention can be made within the scope of what is claimed, without departing from the spirit and purpose thereof. It is thus intended to cover by the claims, any modified forms of structure or mechanical equivalents which may be reasonably included within their scope.
We claim:
1. A piston pump mechanism for converting rotary motion into reciprocating motion, comprising:
a cylindrical housing having a drive end and a working end,
removable flange caps for each end of said housing,
said housing provided with a slot intermediate said ends,
a removable cover over said slot,
a sleeve slidably journalled in said housing,
a piston rod carried by said sleeve and slidably extended through the cap on said working end,
said sleeve having an opening adapted to register with said slot,
a drive rod in said housing having one end rotatably journalled in said sleeve and the other end extended through the cap on said drive end for attachment to a source of power to impart a rotary motion thereto about its longitudinal axis,
transverse threads on said drive rod within said housing,
a cam follower disposed through said slot and said opening for tracking engagement with said transverse threads,
at head on said cam fol-lower engageable with and slidable in said slot and adapted to impart reciprocal 3 motion to said sleeve upon rotation of said drive rod; and said cam follower also serving to prevent rotary motion of said sleeve. 2. A piston pump mechanism for converting rotary motion into reciprocating motion, comprising:
a cylindrical housing having a drive end and a working end,
said housing being provided with a slot intermediate said ends,
a sleeve s'lidably journalled in said housing,
said sleeve having an opening adapted to register with said slot,
a piston rod carried by said sleeve so as to project from said working end,
support means on said working end for said piston rod,
a drive rod in said housing having one end rotatably journalled in said sleeve and the other end projecting from said drive end for attachment to a source of power,
support means on said drive end for said drive rod,
transverse threads on said drive rod within said housing,
cam follower means disposed through said slot and said opening for traclcable engagement with said transverse threads,
said cam follower means being engaged with said sleeve to impart reciprocal motion thereto upon rotation of said drive rod, and
means on said housing to prevent displacement of said cam follower means from said slot and opening.
3. A piston pump mechanism for converting rotary motion into reciprocating motion, comprising:
a slotted housing,
an apertured sleeve slidable in said housing,
a piston rod carried at one end of said sleeve,
a drive rod with transverse threads rotatably disposed at one end in the other end of said sleeve and the other end of said drive rod designed for attachment to a source of power, and
means slidable in said slot through said aperture and operably engageable with said transverse threads and said sleeve to impart a reciprocal motion to said sleeve upon rotation of said drive rod.
4. A piston pump mechanism for converting rotary motion into reciprocating motion, comprising:
a slotted housing,
an apertured sleeve slidable in said housing,
a piston rod carried at one end of said sleeve,
a drive rod with transverse threads rotatably disposed at one end in the other end of said sleeve and the other end of said drive rod designed for attachment to a source of power, and
cam follower means slidable in said slot through said aperture and extending transversely into said sleeve for tracking engagement with said transverse threads to impart a reciprocal motion to said sleeve upon rotation of said drive rod,
5. A device :as defined in claim 4 where said cam follower means includes spaced prongs for partially embracing said drive rod and a head portion slidable in said slot and enga-geable with said sleeve for reciprocating the same.
6. A device as defined in claim 4 wherein said cam follower means serves to prevent rotary motion of said sleeve.
7. A device as defined in claim 4 including means carried by said housing to prevent accidental displacement of said cam follower means from said slot and aperture.
8. A piston pump mechanism for converting rotary motion into reciprocating motion, comprising:
a slotted housing,
a reciprocating driven member in said housing,
a piston rod carried by said driven member,
a rotating dri've member with longitudinally extending transverse threads disposed at one end in said driven member and the other end of said driven member adapted for attachment to a source of power, and
means slidable in said slot and operably engageable with said transverse threads and said driven member to impart a reciprocal motion thereto upon rotation of said drive member.
9. A piston pump mechanism for converting rotary motion into reciprocating motion, comprising:
a slotted housing,
an apertured reciprocating driven member in said housa piston rod carried by said driven member,
a rotating drive member with longitudinally extending transverse threads dispose-d at one end in said driven member and the other end of said driven member :adapted for attachment to a source of power, and
cam follower means slidable in said slot through said aperture and extending transversely into said driven member for tracking engagement with said transverse threads to impart a reciprocal motion to said driven member upon rotation of said drive member.
10. A device as defined in claim. 9 wherein said cam follower means serves to prevent rotary motion of said driven member.
11. A device as defined in claim 9 including means carried by said housing to prevent accidental displacement of said cam follower means from said slot and aperture.
References Cited by the Examiner UNITED STATES PATENTS 1,723,100 8/1929 Voorhees 7457 1,723,189 8/1929 Martin 745'7 1,801,017 4/1931 Major 74-57 X 2,673,964 3/1954 Morton et a1. 7457 X 3,218,937 11/1965 Dettlof 74-57 X FRED C. MATTERN, JR., Primary Examiner, F. E. BAKER, Assistant Examiner,

Claims (1)

1. A PISTON PUMP MECHANISM FOR CONVERTING ROTARY MOTION INTO RECIPROCATING MOTION, COMPRISING: A CYLINDRICAL HOUSING HAVING A DRIVE END AND A WORKING END, REMOVABLE FLANGE CAPS FOR EACH END OF SAID HOUSING, SAID HOUSING PROVIDED WITH A SLOT INTERMEDIATE SAID ENDS, A REMOVABLE COVER OVER SAID SLOT, A SLEEVE SLIDABLY JOURNALLED IN SAID HOUSING, A PISTON ROD CARRIED BY SAID SLEEVE AND SLIDABLY EXTENDED THROUGH THE CAP ON SAID WORKING END, SAID SLEEVE HAVING AN OPENING ADAPTED TO REGISTER WITH SAID SLOT, A DRIVE ROD IN SAID HOUSING HAVING ONE END ROTATABLY JOURNALLED IN SAID SLEEVE AND THE OTHER END EXTENDED THROUGH THE CAP ON SAID DRIVE END FOR ATTACHMENT TO A SOURCE OF POWER TO IMPART A ROTARY MOTION THERETO ABOUT ITS LONGITUDINAL AXIS, TRANSVERSE THREADS ON SAID DRIVE ROD WITHIN SAID HOUSING, A CAM FOLLOWER DISPOSED THROUGH SAID SLOT AND SAID OPENING FOR TRACKING ENGAGEMENT WITH SAID TRANSVERSE THREADS, A HEAD ON SAID CAM FOLLOWER ENGAGEABLE WITH AND SLIDABLE IN SAID SLOT AND ADAPTED TO IMPART RECIPROCAL MOTION TO SAID SLEEVE UPON ROTATION OF SAID DRIVE ROD; AND SAID CAM FOLLOWER ALSO SERVING TO PREVENT ROTARY MOTION OF SAID SLEEVE.
US383756A 1964-07-20 1964-07-20 Piston pump with transverse thread actuator Expired - Lifetime US3299720A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US383756A US3299720A (en) 1964-07-20 1964-07-20 Piston pump with transverse thread actuator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US383756A US3299720A (en) 1964-07-20 1964-07-20 Piston pump with transverse thread actuator

Publications (1)

Publication Number Publication Date
US3299720A true US3299720A (en) 1967-01-24

Family

ID=23514589

Family Applications (1)

Application Number Title Priority Date Filing Date
US383756A Expired - Lifetime US3299720A (en) 1964-07-20 1964-07-20 Piston pump with transverse thread actuator

Country Status (1)

Country Link
US (1) US3299720A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD397788S (en) 1996-08-21 1998-09-01 Bristol-Myers Squibb Company Irrigation and suction instrument
US5882319A (en) * 1996-02-15 1999-03-16 Bristol-Myers Squibb Company Lavage instrument
US6199884B1 (en) 1996-12-23 2001-03-13 7444353 Alberta Ltd. Helical drive bicycle
US6241565B1 (en) 1996-12-23 2001-06-05 Helixsphere Technologies, Inc. Helical drive human powered boat

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1723189A (en) * 1927-06-06 1929-08-06 John H Lee Wind-shield cleaner
US1723100A (en) * 1921-10-07 1929-08-06 Voorhees Gardner Tufts Piston apparatus
US1801017A (en) * 1929-05-07 1931-04-14 Major Joseph Power-driven hoe
US2673964A (en) * 1951-03-16 1954-03-30 Designers For Industry Inc Variable inductor
US3218937A (en) * 1963-05-06 1965-11-23 Trw Inc Variable ratio power steering gear

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1723100A (en) * 1921-10-07 1929-08-06 Voorhees Gardner Tufts Piston apparatus
US1723189A (en) * 1927-06-06 1929-08-06 John H Lee Wind-shield cleaner
US1801017A (en) * 1929-05-07 1931-04-14 Major Joseph Power-driven hoe
US2673964A (en) * 1951-03-16 1954-03-30 Designers For Industry Inc Variable inductor
US3218937A (en) * 1963-05-06 1965-11-23 Trw Inc Variable ratio power steering gear

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5882319A (en) * 1996-02-15 1999-03-16 Bristol-Myers Squibb Company Lavage instrument
USD397788S (en) 1996-08-21 1998-09-01 Bristol-Myers Squibb Company Irrigation and suction instrument
US6199884B1 (en) 1996-12-23 2001-03-13 7444353 Alberta Ltd. Helical drive bicycle
US6213487B1 (en) 1996-12-23 2001-04-10 744353 Alberta Ltd. Helical drive wheelchair
US6241565B1 (en) 1996-12-23 2001-06-05 Helixsphere Technologies, Inc. Helical drive human powered boat

Similar Documents

Publication Publication Date Title
US3388603A (en) Engine
KR880004235A (en) Rotary cam compressor with anti-rotation mechanism
US2775128A (en) Device for changing circular motion to rectilinear motion
US2936632A (en) Anti-friction drive means
US1349660A (en) Connection between piston-rods and crank-shafts
US3299720A (en) Piston pump with transverse thread actuator
US4026196A (en) Device for driving a pump piston
US667350A (en) Mechanism for converting reciprocating into rotary motion.
US3946617A (en) Motion translation mechanism
US3277743A (en) Crankshaft with floating crank throws
US2579642A (en) Mechanical movement
US1404625A (en) Rotary pump
US3339460A (en) Pressure fluid motor
GB446185A (en) Means for converting reciprocating into rotary motion and vice versa
US3320826A (en) Bicycle pedal having sealed lubrication means
US1312962A (en) Valveless pump
US2341768A (en) Swash plate pump adjusting means
US1888448A (en) Crank mechanism for reciprocating engines
US42336A (en) Improvement in propeller-engines
US3641828A (en) Rotary-linear motion converter
US4080114A (en) Oscillating positive displacement machine
US378847A (en) Mechanical movement
KR910000870B1 (en) engine
US1682924A (en) Mechanism for the interconversion of reciprocating and rotary motion
US3424016A (en) Clutch control device