GB981844A - Improvements in or relating to hydraulic pumps - Google Patents

Improvements in or relating to hydraulic pumps

Info

Publication number
GB981844A
GB981844A GB6649/63A GB664963A GB981844A GB 981844 A GB981844 A GB 981844A GB 6649/63 A GB6649/63 A GB 6649/63A GB 664963 A GB664963 A GB 664963A GB 981844 A GB981844 A GB 981844A
Authority
GB
United Kingdom
Prior art keywords
spring
servomechanism
feb
pistons
towards
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
GB6649/63A
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.)
Weatherhead Co
Original Assignee
Weatherhead Co
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 Weatherhead Co filed Critical Weatherhead Co
Publication of GB981844A publication Critical patent/GB981844A/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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/12—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by varying the length of stroke of the working members
    • 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
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/06—Control
    • F04B1/08—Control regulated by delivery pressure
    • 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
    • F04B1/14—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 stationary cylinders
    • F04B1/141—Details or component parts
    • F04B1/143—Cylinders
    • 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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • 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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/08—Regulating by delivery pressure

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Rotary Pumps (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

981,844. Reciprocating pumps. WEATHERHEAD CO. Feb. 19, 1963 [Feb. 23, 1962], No. 6649/63. Heading F1A. [Also in Division G3] The effective displacement of a multi-cylinder, swashplate pump is varied by axial adjustment of the cylinder block 50 to vary the point in the stroke at which the pistons 62 close the inlet ports 57, 58. The block is urged by a spring 97 towards the maximum delivery position, defined by an adjustable stop 212, and in the opposite direction by a servomechanism 107 (see Division G3) under manual control and with an overriding control operative to limit the delivery pressure. A web 44 positioned by snap rings 45, 46 houses the servomechanism and forms an abutment for springs 66 urging the pistons towards the swashplate 38 which is held against rotation by a stud 39 engaging a channel 41 and is oscillated by a rotary drive plate 25. Discharge to an outlet 93 takes place through a reaction piston 75 held by a light spring 82 against a member 79 which carries a check valve 87 loaded by a spring 88 enclosed in a cage 89. Specifications 952,203 and 981,845 are referred to.
GB6649/63A 1962-02-23 1963-02-19 Improvements in or relating to hydraulic pumps Expired GB981844A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US175201A US3179061A (en) 1962-02-23 1962-02-23 Variable displacement pump control

Publications (1)

Publication Number Publication Date
GB981844A true GB981844A (en) 1965-01-27

Family

ID=22639356

Family Applications (2)

Application Number Title Priority Date Filing Date
GB6650/63A Expired GB981845A (en) 1962-02-23 1963-02-19 Improvements in or relating to hydraulic pumps
GB6649/63A Expired GB981844A (en) 1962-02-23 1963-02-19 Improvements in or relating to hydraulic pumps

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB6650/63A Expired GB981845A (en) 1962-02-23 1963-02-19 Improvements in or relating to hydraulic pumps

Country Status (5)

Country Link
US (1) US3179061A (en)
CH (2) CH405935A (en)
DE (2) DE1453697A1 (en)
ES (1) ES284953A1 (en)
GB (2) GB981845A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3298316A (en) * 1964-04-06 1967-01-17 Budzich Tadeusz Remote adjustment for pressure compensated pump setting
DE1928249C3 (en) * 1969-06-03 1981-06-11 Alfred Teves Gmbh, 6000 Frankfurt Piston pump
GB1385702A (en) * 1971-01-29 1975-02-26 Chamberlain Ind Ltd Hydraulic motors and the like
US3910727A (en) * 1972-09-13 1975-10-07 Valve Syst Int Inc Metering pump

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2354562A (en) * 1940-07-06 1944-07-25 American Machine & Metals Hydraulic testing machine
US2684630A (en) * 1950-11-29 1954-07-27 Schweizerische Lokomotiv Variable delivery force pump
US2648312A (en) * 1951-11-28 1953-08-11 Hpm Dev Corp Control operator for hydraulic pumps
US2741451A (en) * 1952-03-04 1956-04-10 Arthur A Welborn Fluid flow control devices
US2885174A (en) * 1953-12-02 1959-05-05 Crane Co Valve actuating mechanism or the like
US2930321A (en) * 1956-07-18 1960-03-29 Borg Warner Pump
GB883014A (en) * 1957-03-30 1961-11-22 Stabilimenti Elettromeccanici Improvements in or relating to hydraulic remote control arrangements
US2990781A (en) * 1957-11-25 1961-07-04 Gen Motors Corp Wobble plate pump
US3101977A (en) * 1958-03-07 1963-08-27 Letourneau Westinghouse Compan Hydraulic track tensioning means

Also Published As

Publication number Publication date
DE1453696A1 (en) 1969-07-10
GB981845A (en) 1965-01-27
US3179061A (en) 1965-04-20
CH407751A (en) 1966-02-15
ES284953A1 (en) 1963-05-01
CH405935A (en) 1966-01-15
DE1453697A1 (en) 1969-06-26

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