GB1291984A - Multiple piston hydraulic pump or motor - Google Patents

Multiple piston hydraulic pump or motor

Info

Publication number
GB1291984A
GB1291984A GB56494/69A GB5649469A GB1291984A GB 1291984 A GB1291984 A GB 1291984A GB 56494/69 A GB56494/69 A GB 56494/69A GB 5649469 A GB5649469 A GB 5649469A GB 1291984 A GB1291984 A GB 1291984A
Authority
GB
United Kingdom
Prior art keywords
tapered groove
motor
cylinder
section
inlet
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
GB56494/69A
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 GB1291984A publication Critical patent/GB1291984A/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
    • F04B1/20—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
    • F04B1/2021—Details or component parts characterised by the contact area between cylinder barrel and valve plate

Landscapes

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

Abstract

1291984 Hydraulic reciprocating pumps and motors SUNDSTRAND CORP 18 Nov 1969 [19 Feb 1969] 56494/69 Heading F1A The fixed valve plate 52 controlling the supply and exhaust of liquid through ports 51b to and from cylinder 23, 24 in a rotary cylinder block 14 of a swash plate pump or motor is provided with inlet and outlet ports having tapered groove portions 76, 86 which communicate with each cylinder port 51b before the piston in its associated cylinder reaches its respective extreme end position. This arrangement reduces the shock waves which occur and thus reduces noise. The valve plate shown is of a pump and has an inlet section 68 and an outlet section 70. The inlet section is in the form of one or more circumferentially spaced arcuate slots 83, 84, 85 and a circular through bore 81 into which leads the tapered groove portion 76. The outlet section 70 is similar to the inlet section and comprises one or more arcuate slots 90, 91, 92, bore 88 and tapered groove portion 86. The tapered groove portions 76, 86 taper in depth as well as width.
GB56494/69A 1969-02-19 1969-11-18 Multiple piston hydraulic pump or motor Expired GB1291984A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US80052769A 1969-02-19 1969-02-19

Publications (1)

Publication Number Publication Date
GB1291984A true GB1291984A (en) 1972-10-04

Family

ID=25178623

Family Applications (1)

Application Number Title Priority Date Filing Date
GB56494/69A Expired GB1291984A (en) 1969-02-19 1969-11-18 Multiple piston hydraulic pump or motor

Country Status (4)

Country Link
US (1) US3585901A (en)
DE (1) DE1963288B2 (en)
FR (1) FR2030906A5 (en)
GB (1) GB1291984A (en)

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US3699845A (en) * 1970-07-24 1972-10-24 Lucas Industries Ltd Rotary hydraulic pumps and motors
US3774505A (en) * 1971-03-01 1973-11-27 Dowty Technical Dev Ltd Swash plate devices
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US3779137A (en) * 1971-09-27 1973-12-18 Gen Motors Corp Hydrostatic tilt box bearing
DE2208890A1 (en) * 1972-02-25 1973-09-06 Bosch Gmbh Robert AXIAL PISTON PUMP
US3924515A (en) * 1973-06-15 1975-12-09 Robert Cecil Clerk Porting arrangements of axial piston pumps and motors
US3956969A (en) * 1974-12-09 1976-05-18 Caterpillar Tractor Co. Hydrostatic pump including separate noise reducing valve assemblies for its inlet and outlet pressure ports
US4034652A (en) * 1975-03-06 1977-07-12 Caterpillar Tractor Co. Method and valve face configuration for reducing noise in a hydraulic pump
US4075933A (en) * 1976-06-04 1978-02-28 Gresen Manufacturing Company Hydraulic pump or motor
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US4550645A (en) * 1984-04-27 1985-11-05 Sundstrand Corporation Thin valve plate for a hydraulic unit
DE3725361A1 (en) * 1987-07-30 1989-02-16 Brueninghaus Hydraulik Gmbh AXIAL PISTON MACHINE IN TYPE DISC OR TYPE AXIS DESIGN WITH SLOT CONTROL AND PRESSURE COMPENSATION CHANNELS
DE3743125A1 (en) * 1987-12-18 1989-07-06 Brueninghaus Hydraulik Gmbh AXIAL PISTON PUMP
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US5103642A (en) * 1990-07-12 1992-04-14 Fuji Tekko Co., Ltd. Rotary shaft coupler with rotary valve plate position dependent on direction of shaft rotation
US5186614A (en) * 1991-11-04 1993-02-16 General Motors Corporation Variable discharge flow attenuation for compressor
US5297994A (en) * 1991-12-20 1994-03-29 Fuji Univance Corporation Hydraulic power transmission joint which is used in vehicles
US5230274A (en) * 1992-02-11 1993-07-27 Vickers Incorporated Variable displacement hydraulic pump with quiet timing
DE4301135C2 (en) * 1993-01-18 1995-04-06 Danfoss As Hydraulic piston machine
WO1995030833A1 (en) * 1994-05-06 1995-11-16 Caterpillar Inc. Hydraulic axial piston unit
DE4417011C2 (en) * 1994-05-13 1996-11-28 Danfoss As Hydraulic piston machine
US5554007A (en) * 1994-10-17 1996-09-10 Caterpillar Inc. Variable displacement axial piston hydraulic unit
US5593285A (en) * 1995-01-13 1997-01-14 Caterpillar Inc. Hydraulic axial piston unit with multiple valve plates
IL120609A0 (en) * 1997-04-06 1997-08-14 Nordip Ltd Hydraulic axial piston pumps
JPH11210878A (en) 1998-01-20 1999-08-03 Honda Motor Co Ltd Hydraulic controller for variable displacement type hydraulic transmission
US6196109B1 (en) * 1998-11-16 2001-03-06 Eaton Corporation Axial piston pump and improved valve plate design therefor
EP1013928A3 (en) * 1998-12-22 2000-11-08 Parker Hannifin GmbH Swash plate axial piston pump with pulsation damping means
US6413055B1 (en) 2001-02-02 2002-07-02 Sauer-Danfoss Inc. Swashplate position assist mechanism
US6510779B2 (en) 2001-02-02 2003-01-28 Sauer-Danfoss, Inc. Electronic bore pressure optimization mechanism
US6675696B1 (en) 2001-12-14 2004-01-13 Hydro-Gear Limited Partnership Pump and center section for hydrostatic transmission
FR2838233A1 (en) * 2002-04-04 2003-10-10 St Microelectronics Sa Method for programming memory cells by breaking down antifuse elements
DE10241979A1 (en) * 2002-09-11 2004-03-18 Bosch Rexroth Ag Hydrotransformer has dead space which enlarges displacement chamber during reversing phase, and switching unit has three control slots distributed around circumference, with dead spaces opening into region between control slots
US7367783B2 (en) * 2003-03-07 2008-05-06 Honda Motor Co., Ltd. Rotating fluid machine
US6981321B1 (en) * 2003-09-29 2006-01-03 Sauer-Danfoss Inc. Hydrostatic cylinder block and method of making the same
DE112006000312T5 (en) * 2005-02-10 2007-12-13 Komatsu Ltd. Hydraulic piston pump
GB0509787D0 (en) * 2005-05-12 2005-06-22 Brisland M J Fluid powered motor or pump
GB2440155A (en) * 2006-07-18 2008-01-23 Agco Gmbh An axial piston pump or machine of the swashplate or bent axis type
FR2965311B1 (en) * 2010-09-29 2012-09-28 Hydro Leduc HYDRAULIC DISTRIBUTION DEVICE USING A DOUBLE SENSE PUMP WITH VARIABLE FLOW RATE
US20150044079A1 (en) * 2012-03-30 2015-02-12 Kayaba Industry Co., Ltd. Sliding members and piston pump/motor
JP6110074B2 (en) * 2012-03-30 2017-04-05 三菱重工業株式会社 Fluid pressure pump
US20140109761A1 (en) * 2012-10-19 2014-04-24 Caterpillar Inc. Axial pump having stress reduced port plate
US9657726B1 (en) * 2013-04-19 2017-05-23 Hydro-Gear Limited Partnership Hydraulic running surface
NO20140581A1 (en) * 2013-05-26 2014-11-27 Subsea Hydraulic Components As Device and method of pump for dive use
DK3070329T3 (en) * 2013-11-13 2019-06-03 Eco Sistems Watermakers S L Hydraulic axial piston pump with floating suspended rotating drum
ES2796054T3 (en) * 2015-02-11 2020-11-25 Danfoss As Hydraulic device
US20160273531A1 (en) * 2015-03-18 2016-09-22 Hamilton Sundstrand Corporation Cylinder block assembly for hydraulic unit
DE102015224132A1 (en) * 2015-12-03 2017-06-08 Robert Bosch Gmbh Hydrostatic axial piston machine with control disc
US10539213B2 (en) * 2017-10-03 2020-01-21 Hamilton Sundstrand Corporation Hydraulic unit cylinder block for integrated drive generator
DE102018109630A1 (en) * 2018-01-31 2019-08-01 Danfoss A/S Hydraulic machine
KR20200004075A (en) * 2018-07-03 2020-01-13 현대자동차주식회사 Rotated valve plate compressor
US11236736B2 (en) * 2019-09-27 2022-02-01 Honeywell International Inc. Axial piston pump with port plate having balance feed aperture relief feature

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US2642809A (en) * 1946-02-15 1953-06-23 Denison Eng Co Hydraulic apparatus
US2633104A (en) * 1949-07-15 1953-03-31 Borg Warner Motor port construction
US2780170A (en) * 1953-11-17 1957-02-05 Sundstrand Machine Tool Co Supercharging system for fluid pumps
US2896546A (en) * 1955-08-09 1959-07-28 Sundstrand Machine Tool Co Porting arrangement for hydraulic pumps and motors
US2944529A (en) * 1956-08-11 1960-07-12 Reiners Walter Rotary slide valves for hydraulic piston machines
FR1184733A (en) * 1956-10-01 1959-07-24 Device for reducing the noise of multi-cylinder piston machines
GB984872A (en) * 1962-05-12 1965-03-03 Council Scient Ind Res Improvements in rotary hydraulic reciprocating piston pumps and motors
US3199461A (en) * 1963-05-27 1965-08-10 Cessna Aircraft Co Hydraulic pump or motor
US3208397A (en) * 1963-06-19 1965-09-28 Lehrer Alexander Quiet hydraulic pump
US3249061A (en) * 1963-07-01 1966-05-03 Sundstrand Corp Pump or motor device
DE1220736B (en) * 1963-08-02 1966-07-07 Linde Ag Pressure compensation groove in the separating web between the two control openings of the control plate of an axial or radial piston pump
US3283726A (en) * 1964-12-14 1966-11-08 American Brake Shoe Co Construction for pump/motor devices
FR1452163A (en) * 1965-07-23 1966-02-25 Cessna Aircraft Co Device for regulating pressure in a hydraulic pump or motor

Also Published As

Publication number Publication date
DE1963288A1 (en) 1970-08-27
FR2030906A5 (en) 1970-11-13
DE1963288B2 (en) 1974-08-08
US3585901A (en) 1971-06-22

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PE20 Patent expired after termination of 20 years