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GB954715A - Hydraulic pumps - Google Patents

Hydraulic pumps

Info

Publication number
GB954715A
GB954715A GB10988/62A GB1098862A GB954715A GB 954715 A GB954715 A GB 954715A GB 10988/62 A GB10988/62 A GB 10988/62A GB 1098862 A GB1098862 A GB 1098862A GB 954715 A GB954715 A GB 954715A
Authority
GB
United Kingdom
Prior art keywords
valve
passage
pump
outlet pressure
piston
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
GB10988/62A
Inventor
Denis Ernest Lee
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.)
ZF International UK Ltd
Original Assignee
Lucas Industries Ltd
Joseph Lucas Industries Ltd
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 Lucas Industries Ltd, Joseph Lucas Industries Ltd filed Critical Lucas Industries Ltd
Priority to GB10988/62A priority Critical patent/GB954715A/en
Priority to US264111A priority patent/US3173377A/en
Publication of GB954715A publication Critical patent/GB954715A/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

Landscapes

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

Abstract

954,715. Swashplate pumps. JOSEPH LUCAS (INDUSTRIES) Ltd. March 7, 1963 [March 22, 1962], No. 10988/62. Heading F1A. [Also in Divisions F2 and G3] A variable stroke hydraulic pump comprises a swash plate 11 actuating pistons 9 in a rotating cylinder block 7. The swash plate is biased to a maximum stroke position and its inclination is adjusted in response to the outlet pressure by fluid pressure supplied and exhausted through a passage 27, under the action of a pilot valve 20, acting on a piston (not shown). The pilot valve 20 is loaded by a spring 21, which also ensures rotation of the valve with the cylinder block, and the outlet pressure acts through conduit 24 on the right hand side of the valve. As shown the passage 27 is connected through passage 25 and valve 20 to an exhaust passage 29. When the outlet pressure reaches a predetermined valve, the valve moves to the left to connect conduit 24 to passage 27 through passage 26. The valve 20 is formed with a larger diameter portion 20a which forms an abutment for an annular piston 22. A solenoid operated valve 30 can be opened to admit outlet pressure to a chamber 19a which acts on the piston 22 to move the valve 20 to the left to reduce the pump displacement. The pump may be part of a vehicle transmission and the valve 30 is operated to set zero pump delivery when the engine driving the pump is started.
GB10988/62A 1962-03-22 1962-03-22 Hydraulic pumps Expired GB954715A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB10988/62A GB954715A (en) 1962-03-22 1962-03-22 Hydraulic pumps
US264111A US3173377A (en) 1962-03-22 1963-03-11 Hydraulic pumps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB10988/62A GB954715A (en) 1962-03-22 1962-03-22 Hydraulic pumps

Publications (1)

Publication Number Publication Date
GB954715A true GB954715A (en) 1964-04-08

Family

ID=9977984

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10988/62A Expired GB954715A (en) 1962-03-22 1962-03-22 Hydraulic pumps

Country Status (2)

Country Link
US (1) US3173377A (en)
GB (1) GB954715A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2159607A (en) * 1984-05-09 1985-12-04 Sundstrand Corp Multi-function valve for hydrostatic transmission
EP0163995A1 (en) * 1984-05-23 1985-12-11 BRUENINGHAUS HYDRAULIK GmbH Hydrostatic axial-piston machine with a tiltable swash plate

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4374953B2 (en) 2003-09-09 2009-12-02 株式会社日立製作所 Data processing system
US7130975B2 (en) 2003-06-27 2006-10-31 Hitachi, Ltd. Data processing system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2379546A (en) * 1937-06-09 1945-07-03 Ex Cell O Corp Hydraulic transmission
US2845876A (en) * 1954-03-01 1958-08-05 Vickers Inc Power transmission

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2159607A (en) * 1984-05-09 1985-12-04 Sundstrand Corp Multi-function valve for hydrostatic transmission
EP0163995A1 (en) * 1984-05-23 1985-12-11 BRUENINGHAUS HYDRAULIK GmbH Hydrostatic axial-piston machine with a tiltable swash plate

Also Published As

Publication number Publication date
US3173377A (en) 1965-03-16

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