GB1363990A - Variable displacement hydraulic piston pump or motor - Google Patents

Variable displacement hydraulic piston pump or motor

Info

Publication number
GB1363990A
GB1363990A GB1369472A GB1369472A GB1363990A GB 1363990 A GB1363990 A GB 1363990A GB 1369472 A GB1369472 A GB 1369472A GB 1369472 A GB1369472 A GB 1369472A GB 1363990 A GB1363990 A GB 1363990A
Authority
GB
United Kingdom
Prior art keywords
cam means
valve
pressure
supplied
fluid
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
Application number
GB1369472A
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.)
Sundstrand Corp
Original Assignee
Sundstrand Corp
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 Sundstrand Corp filed Critical Sundstrand Corp
Publication of GB1363990A publication Critical patent/GB1363990A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/26—Control
    • F04B1/30—Control of machines or pumps with rotary cylinder blocks
    • F04B1/32—Control of machines or pumps with rotary cylinder blocks by varying the relative positions of a swash plate and a cylinder block
    • F04B1/324—Control of machines or pumps with rotary cylinder blocks by varying the relative positions of a swash plate and a cylinder block by changing the inclination of the swash plate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/20—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
    • F04B1/2014—Details or component parts
    • F04B1/2042—Valves

Landscapes

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

Abstract

1363990 Reciprocating pumps and motors SUNDSTRAND CORP 23 March 1972 [12 April 1971] 13694/72 Heading F1A [Also in Division G3] In an axial or radial piston, rotary cylinder block pump or motor with adjustable cam means 18 for adjusting the piston stroke, a valve plate 36 engaged by the cylinder block 11 has a control port 42 through which pressure fluid is supplied to the cylinders to bias the cam means to a selected position. For the pump shown, valve plate ports 38, 39 are asymmetrically disposed relative to the cam means tilt axis 19, so that the cam means is normally biased towards its full-stroke position, fluid being supplied to control port 42 to reduce the piston stroke. Alternatively, the cam means may be spring- biased towards its full-stroke position. Control fluid is supplied from the pump delivery line 53 via line 54 and valve 50 which acts to maintain constant output pressure (see Division G3). A solenoid-controlled valve 51 is operated to move the cam means to its minimum stroke position, valve-member 70 moving to the right to connect port 69 of valve 50 to pressure, so that valvemember 55 is held in its right hand position in which it connects control port 42 to pressure.
GB1369472A 1971-04-12 1972-03-23 Variable displacement hydraulic piston pump or motor Expired GB1363990A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US13327871A 1971-04-12 1971-04-12

Publications (1)

Publication Number Publication Date
GB1363990A true GB1363990A (en) 1974-08-21

Family

ID=22457824

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1369472A Expired GB1363990A (en) 1971-04-12 1972-03-23 Variable displacement hydraulic piston pump or motor

Country Status (5)

Country Link
US (1) US3727521A (en)
JP (1) JPS5520072B1 (en)
DE (1) DE2217891A1 (en)
FR (1) FR2132869B1 (en)
GB (1) GB1363990A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4653986A (en) * 1983-07-28 1987-03-31 Tidewater Compression Service, Inc. Hydraulically powered compressor and hydraulic control and power system therefor

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2333380C2 (en) * 1973-06-30 1982-04-08 Eckhard 7120 Bietigheim Aschke Hydraulic machine
US4631000A (en) * 1984-07-16 1986-12-23 Sundstrand Corporation Variable displacement hydraulic pressure intensifier
JPH01305259A (en) * 1988-06-03 1989-12-08 Matsushita Electric Ind Co Ltd Hot water supplying apparatus
JP2606758Y2 (en) * 1992-12-22 2001-01-09 株式会社小松製作所 Hydraulic pump / motor cylinder chamber pressure control device
US5554007A (en) * 1994-10-17 1996-09-10 Caterpillar Inc. Variable displacement axial piston hydraulic unit
EP1013928A3 (en) 1998-12-22 2000-11-08 Parker Hannifin GmbH Swash plate axial piston pump with pulsation damping means
US6705203B2 (en) 2001-11-28 2004-03-16 Sauer-Danfoss Inc. Extended male slipper servo pad arrangement for positioning swashplate and method assembling same
US10012228B2 (en) 2014-04-17 2018-07-03 Danfoss Power Solutions Gmbh & Co. Ohg Variable fluid flow hydraulic pump
US11592000B2 (en) 2018-07-31 2023-02-28 Danfoss Power Solutions, Inc. Servoless motor
DE102022107860A1 (en) 2022-04-01 2023-10-05 Danfoss Power Solutions Inc. Hydraulic axial piston unit and method for controlling a hydraulic axial piston unit

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3230894A (en) * 1962-11-05 1966-01-25 Benjamin W Badenoch Power transmission
US3190232A (en) * 1963-02-11 1965-06-22 Budzich Tadeusz Hydraulic apparatus
US3199461A (en) * 1963-05-27 1965-08-10 Cessna Aircraft Co Hydraulic pump or motor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4653986A (en) * 1983-07-28 1987-03-31 Tidewater Compression Service, Inc. Hydraulically powered compressor and hydraulic control and power system therefor

Also Published As

Publication number Publication date
FR2132869B1 (en) 1977-07-08
US3727521A (en) 1973-04-17
FR2132869A1 (en) 1972-11-24
JPS5520072B1 (en) 1980-05-30
DE2217891A1 (en) 1972-10-19

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee