GB984872A - Improvements in rotary hydraulic reciprocating piston pumps and motors - Google Patents

Improvements in rotary hydraulic reciprocating piston pumps and motors

Info

Publication number
GB984872A
GB984872A GB18349/62A GB1834962A GB984872A GB 984872 A GB984872 A GB 984872A GB 18349/62 A GB18349/62 A GB 18349/62A GB 1834962 A GB1834962 A GB 1834962A GB 984872 A GB984872 A GB 984872A
Authority
GB
United Kingdom
Prior art keywords
port
main
auxiliary
motor
ports
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
GB18349/62A
Inventor
Ronald Firth
Roger Harvey Yorke Hancock
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.)
Council of Scientific and Industrial Research CSIR
Original Assignee
Council of Scientific and Industrial Research CSIR
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 Council of Scientific and Industrial Research CSIR filed Critical Council of Scientific and Industrial Research CSIR
Priority to GB18349/62A priority Critical patent/GB984872A/en
Priority to FR911332A priority patent/FR1335446A/en
Priority to US287166A priority patent/US3200761A/en
Priority to DE19631453467 priority patent/DE1453467A1/en
Publication of GB984872A publication Critical patent/GB984872A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D82/00—Crop conditioners, i.e. machines for crushing or bruising stalks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B3/00—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F01B3/10—Control of working-fluid admission or discharge peculiar thereto
    • F01B3/103—Control of working-fluid admission or discharge peculiar thereto for machines with rotary cylinder block
    • F01B3/104—Control of working-fluid admission or discharge peculiar thereto for machines with rotary cylinder block by turning the valve 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

Abstract

984,872. Reciprocating pumps. COUNCIL FOR SCIENTIFIC INDUSTRIAL RESEARCH. April 30, 1963 [May 12, 1962], No. 18349/62. Heading F1A. In an hydraulic pump or motor having a cylinder block rotatable relative to a cam member and a port block, the port member is provided, between the main ports, with at least one auxiliary port connected to a main port through an adjustable obturator. The auxiliary port 30 is positioned a slightly greater distance than the diameter of a cylinder part 19 from the trailing end of a main port 20 and is in communication with the leading end of a main port 21. The obturator comprises a threaded tapered needle 37 which is radially adjustable by a circular rack 40. Alternatively the needle may slide in the bore 38 and be spring loaded against a cam ring. In the case of a reversible pump or motor, each main port 20, 21 has an auxiliary port at either end, and the trailing auxiliary ports are cut off by their associated obturators. The circular rack may be made responsive either to variations in liquid pressure or to swash plate angle. Specifications 893,848 and 934,851 are referred to.
GB18349/62A 1962-05-12 1962-05-12 Improvements in rotary hydraulic reciprocating piston pumps and motors Expired GB984872A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB18349/62A GB984872A (en) 1962-05-12 1962-05-12 Improvements in rotary hydraulic reciprocating piston pumps and motors
FR911332A FR1335446A (en) 1962-05-12 1962-10-04 Discs in pneumatic casing for the production of rollers for agricultural machinery
US287166A US3200761A (en) 1962-05-12 1963-05-01 Hydraulic positive displacement rotary machines
DE19631453467 DE1453467A1 (en) 1962-05-12 1963-05-09 Hydraulic rotating machine with positive adjustment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB18349/62A GB984872A (en) 1962-05-12 1962-05-12 Improvements in rotary hydraulic reciprocating piston pumps and motors

Publications (1)

Publication Number Publication Date
GB984872A true GB984872A (en) 1965-03-03

Family

ID=10110944

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18349/62A Expired GB984872A (en) 1962-05-12 1962-05-12 Improvements in rotary hydraulic reciprocating piston pumps and motors

Country Status (4)

Country Link
US (1) US3200761A (en)
DE (1) DE1453467A1 (en)
FR (1) FR1335446A (en)
GB (1) GB984872A (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1074386A (en) * 1964-08-19 1967-07-05 Dowty Technical Dev Ltd Hydraulic axial piston pumps and motors
US3585901A (en) * 1969-02-19 1971-06-22 Sundstrand Corp Hydraulic pump
DE2333380C2 (en) * 1973-06-30 1982-04-08 Eckhard 7120 Bietigheim Aschke Hydraulic machine
US3905274A (en) * 1974-01-28 1975-09-16 Gen Motors Corp Rotary timing valve
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
GB1535184A (en) * 1975-04-24 1978-12-13 Lucas Industries Ltd Rotary hydraulic machines
US4065229A (en) * 1976-10-01 1977-12-27 General Motors Corporation Variable capacity radial-4 compressor
GB2123093B (en) * 1982-06-03 1985-10-23 Ifield Eng Pty Hydraulic pumps
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
NL1002430C2 (en) * 1996-02-23 1997-08-26 Innas Free Piston Ifp Bv Device for generating, using or transforming hydraulic energy.
US20170138195A1 (en) * 2013-03-12 2017-05-18 Dana Limited Enhanced waste heat recovery system
DE102015224132A1 (en) * 2015-12-03 2017-06-08 Robert Bosch Gmbh Hydrostatic axial piston machine with control disc
DE102018109630A1 (en) * 2018-01-31 2019-08-01 Danfoss A/S Hydraulic machine

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1833983A (en) * 1926-07-22 1931-12-01 Edmund Rogers Valve
FR956823A (en) * 1944-10-30 1950-02-08
US2553655A (en) * 1946-03-14 1951-05-22 Vickers Inc Pump
US2619041A (en) * 1946-09-14 1952-11-25 Denison Eng Co Hydraulic apparatus
US2661695A (en) * 1950-07-21 1953-12-08 Oilgear Co Reduction of noise and shock in power pumps
FR1184733A (en) * 1956-10-01 1959-07-24 Device for reducing the noise of multi-cylinder piston machines

Also Published As

Publication number Publication date
US3200761A (en) 1965-08-17
FR1335446A (en) 1963-08-16
DE1453467A1 (en) 1968-12-12

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