GB1487301A - Hydrostatic pumps - Google Patents

Hydrostatic pumps

Info

Publication number
GB1487301A
GB1487301A GB2661173A GB2661173A GB1487301A GB 1487301 A GB1487301 A GB 1487301A GB 2661173 A GB2661173 A GB 2661173A GB 2661173 A GB2661173 A GB 2661173A GB 1487301 A GB1487301 A GB 1487301A
Authority
GB
United Kingdom
Prior art keywords
container
pump
hydrostatic transmission
outlet
liquid
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
GB2661173A
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.)
UK Secretary of State for Industry
Original Assignee
UK Secretary of State for Industry
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 UK Secretary of State for Industry filed Critical UK Secretary of State for Industry
Priority to GB2661173A priority Critical patent/GB1487301A/en
Publication of GB1487301A publication Critical patent/GB1487301A/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
    • F04B1/14—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
    • F04B1/16—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 having two or more sets of cylinders or pistons
    • 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
    • F04B1/0404—Details or component parts
    • F04B1/0421—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
    • 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
    • F04B1/0404—Details or component parts
    • F04B1/0452—Distribution members, e.g. valves
    • F04B1/0456—Cylindrical
    • 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
    • F04B1/047—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the outer ends of the 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
    • 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
    • F04B49/16—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 adjusting the capacity of dead spaces of working chambers

Landscapes

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

Abstract

1487301 Reciprocating pumps INDUSTRY SECRETARY OF STATE FOR 4 Sept 1974 [4 June 1973] 26611/73 Heading F1A [Also in Division F2] A pump, e.g. for a vehicle hydrostatic transmission, comprises a container 86 connected to a pump working chamber 80 via passage 85 and connected via a non-return valve 89 to the system outlet, the container acting to regulate the pump delivery to the outlet by storing energy by compression of the liquid within the container, expansion of the container, deformation of elastomer inserts in the container or deflection of a spring-loaded piston within the container. In the radial piston pump shown, each spring-loaded piston 81 has a ball engaging a rotary two-lobed cam track 83 and liquid enters the pumping chamber 80 from inlet 97 via passages 102 in a rotary pintle valve on drive-shaft 78. Liquid delivery is effected via container 86, non-return valve 89 and pintle valve passage 103. In a hydrostatic transmission, the pump shown can provide engine braking by being driven as a motor by the vehicle wheel motors acting as pumps during over-run. In Figs. 1 and 2 (not shown), opposed pairs of pistons (12) are reciprocated in axial cylinders by axiallyacting, two-lobed cam members (14) on a driveshaft (6), each cylinder being connected to a respective container (18) and the cylinder and container being connected to a respective inlet and outlet via non-return valves (19), (25). A hydrostatic transmission circuit is described (see Division F2).
GB2661173A 1974-09-04 1974-09-04 Hydrostatic pumps Expired GB1487301A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2661173A GB1487301A (en) 1974-09-04 1974-09-04 Hydrostatic pumps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2661173A GB1487301A (en) 1974-09-04 1974-09-04 Hydrostatic pumps

Publications (1)

Publication Number Publication Date
GB1487301A true GB1487301A (en) 1977-09-28

Family

ID=10246348

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2661173A Expired GB1487301A (en) 1974-09-04 1974-09-04 Hydrostatic pumps

Country Status (1)

Country Link
GB (1) GB1487301A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4555223A (en) * 1981-05-29 1985-11-26 Itt Industries, Inc. Radial piston machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4555223A (en) * 1981-05-29 1985-11-26 Itt Industries, Inc. Radial piston machine

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee