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WO1995022001A3 - Water pressure pumps and motors - Google Patents

Water pressure pumps and motors Download PDF

Info

Publication number
WO1995022001A3
WO1995022001A3 PCT/GB1995/000292 GB9500292W WO9522001A3 WO 1995022001 A3 WO1995022001 A3 WO 1995022001A3 GB 9500292 W GB9500292 W GB 9500292W WO 9522001 A3 WO9522001 A3 WO 9522001A3
Authority
WO
WIPO (PCT)
Prior art keywords
cylinder block
outer casing
output shaft
drive
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.)
Ceased
Application number
PCT/GB1995/000292
Other languages
French (fr)
Other versions
WO1995022001A2 (en
Inventor
Tony Markham
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.)
JH Fenner and Co Ltd
Original Assignee
JH Fenner and Co 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
Priority claimed from GB9402743A external-priority patent/GB9402743D0/en
Priority claimed from GB9403232A external-priority patent/GB9403232D0/en
Application filed by JH Fenner and Co Ltd filed Critical JH Fenner and Co Ltd
Priority to AU15878/95A priority Critical patent/AU1587895A/en
Publication of WO1995022001A2 publication Critical patent/WO1995022001A2/en
Publication of WO1995022001A3 publication Critical patent/WO1995022001A3/en
Anticipated expiration legal-status Critical
Ceased 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
    • F04B1/20—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
    • F04B1/2035—Cylinder barrels
    • 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
    • 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
    • F04B1/2064—Housings
    • F04B1/2071—Bearings for cylinder barrels

Landscapes

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

Abstract

A water pump or motor comprises an outer casing (1, 2, 3), and a cylinder block (5) which is rotatably mounted within the outer casing (1, 2, 3). A drive/output shaft (4) is connected to the cylinder block (5), and a plurality of piston assemblies (13), each comprising a piston body and a slipper are mounted within respective piston bores in the cylinder block (5). An angled swash plate (8) is fixed relative to the rotatable cylinder block (5) against which the slippers are pre-loaded, and a port plate controls the flow of water to and from each of the piston bores. The cylinder block (5) is connected to the drive/output shaft (4) by de-coupling means (27) so as to enable the cylinder block (5) to float within the outer casing (1, 2, 3) relative to the drive/output shaft (4). A gap or pocket (53) is provided between the outer casing or the cylinder bearing (17) supporting the cylinder block (5) and the cylinder block (5), which pocket (53) is adapted to receive water under pressure. The rubbing surfaces of at least the principal relatively moving components of the pump/motor are comprised, respectively, of hard and soft materials, the soft materials being polymeric materials.
PCT/GB1995/000292 1994-02-12 1995-02-13 Water pressure pumps and motors Ceased WO1995022001A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU15878/95A AU1587895A (en) 1994-02-12 1995-02-13 Water pressure pumps and motors

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB9402743.0 1994-02-12
GB9402743A GB9402743D0 (en) 1994-02-12 1994-02-12 Water pressure pumps and motors
GB9403232.3 1994-02-19
GB9403232A GB9403232D0 (en) 1994-02-19 1994-02-19 Water pressure pumps and motors

Publications (2)

Publication Number Publication Date
WO1995022001A2 WO1995022001A2 (en) 1995-08-17
WO1995022001A3 true WO1995022001A3 (en) 1995-10-12

Family

ID=26304319

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1995/000292 Ceased WO1995022001A2 (en) 1994-02-12 1995-02-13 Water pressure pumps and motors

Country Status (2)

Country Link
AU (1) AU1587895A (en)
WO (1) WO1995022001A2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19523828C1 (en) * 1995-06-30 1997-01-16 Danfoss As Hydraulic axial piston machine
JP2000033360A (en) * 1998-07-17 2000-02-02 Sumitomo Electric Ind Ltd How to reuse ceramic parts
US10309380B2 (en) * 2011-11-16 2019-06-04 Ocean Pacific Technologies Rotary axial piston pump
US10094364B2 (en) 2015-03-24 2018-10-09 Ocean Pacific Technologies Banded ceramic valve and/or port plate
US10138729B2 (en) * 2016-10-20 2018-11-27 Deere & Company Drive assembly with pressure force aggregating piston arrangement for hydraulic motor speed/torque selector

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2847984A (en) * 1955-11-07 1958-08-19 Gen Motors Corp Hydraulic engine-starting device
US3126835A (en) * 1964-03-31 Fluid pump
US3256834A (en) * 1964-03-16 1966-06-21 Budzich Tadeusz Piston shoe assemblies
GB1089818A (en) * 1963-12-10 1967-11-08 Serck R & D Ltd Hydraulic machines having reciprocatory pistons
FR2359997A1 (en) * 1976-07-26 1978-02-24 Secretary Industry Brit HYDRAULIC MACHINE WITH AXIAL PISTONS
WO1993010349A1 (en) * 1991-11-21 1993-05-27 J.H. Fenner & Co. Limited Water pumps and motors

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3126835A (en) * 1964-03-31 Fluid pump
US2847984A (en) * 1955-11-07 1958-08-19 Gen Motors Corp Hydraulic engine-starting device
GB1089818A (en) * 1963-12-10 1967-11-08 Serck R & D Ltd Hydraulic machines having reciprocatory pistons
US3256834A (en) * 1964-03-16 1966-06-21 Budzich Tadeusz Piston shoe assemblies
FR2359997A1 (en) * 1976-07-26 1978-02-24 Secretary Industry Brit HYDRAULIC MACHINE WITH AXIAL PISTONS
WO1993010349A1 (en) * 1991-11-21 1993-05-27 J.H. Fenner & Co. Limited Water pumps and motors

Also Published As

Publication number Publication date
WO1995022001A2 (en) 1995-08-17
AU1587895A (en) 1995-08-29

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