GB1150533A - Improvements in or relating to Hydraulic Pumps with Pistons, of the Type having a Cylinder Block - Google Patents

Improvements in or relating to Hydraulic Pumps with Pistons, of the Type having a Cylinder Block

Info

Publication number
GB1150533A
GB1150533A GB4791167A GB4791167A GB1150533A GB 1150533 A GB1150533 A GB 1150533A GB 4791167 A GB4791167 A GB 4791167A GB 4791167 A GB4791167 A GB 4791167A GB 1150533 A GB1150533 A GB 1150533A
Authority
GB
United Kingdom
Prior art keywords
valve
cylinders
pistons
groove
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
GB4791167A
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.)
Hispano Suiza Lallemant SA
Original Assignee
Hispano Suiza Lallemant SA
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 Hispano Suiza Lallemant SA filed Critical Hispano Suiza Lallemant SA
Publication of GB1150533A publication Critical patent/GB1150533A/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
    • F04B49/22—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 means of valves
    • F04B49/24—Bypassing
    • 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
    • F04B1/122—Details or component parts, e.g. valves, sealings or lubrication means
    • F04B1/124—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
    • F04B1/12—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
    • 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
    • F04B1/26—Control
    • F04B1/28—Control of machines or pumps with stationary cylinders

Landscapes

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

Abstract

1,150,533. Reciprocating pumps. SOC. HISPANO-SUIZA-LALLEMANT. Oct. 20, 1967 [Oct.26, 1966], No.47911/67. Heading F1A. An axial piston pump comprises a stationary cylinder block 5 with bucket pistons 3 reciprocated by a swash-plate member 17 supported by bearings 20 in a drive-shaft member 21, liquid entering the cylinders from the pump casing via piston ports 52 controlled by sleeves 49 slidable on the pistons between abutments 47, 50, and the liquid being delivered through lift valves 12 to a common outlet 9, delivery being regulated by a by-pass valve 13 having a groove 15, Fig.3, controlling by-pass ports 16 in the cylinders. The valve 13 is rotated by the drive-shaft 2 through a rod 29 and a ball and spline coupling 33 to 35, axial movement of the valve being effected manually or by a servopiston 40 responsive to the pump delivery pressure. The groove 15 is located such that in the left hand position of the valve 13, all of the cylinders on the delivery stroke are by-passed to the pump casing via groove 15 and valve ports 36. In the right-hand position of the valve, as shown in Fig.1, none of the cylinders is by-passed.
GB4791167A 1966-10-26 1967-10-20 Improvements in or relating to Hydraulic Pumps with Pistons, of the Type having a Cylinder Block Expired GB1150533A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR81642A FR1506443A (en) 1966-10-26 1966-10-26 Improvements made to cylinder-type piston pumps, in particular hydraulic pumps of this type

Publications (1)

Publication Number Publication Date
GB1150533A true GB1150533A (en) 1969-04-30

Family

ID=8619968

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4791167A Expired GB1150533A (en) 1966-10-26 1967-10-20 Improvements in or relating to Hydraulic Pumps with Pistons, of the Type having a Cylinder Block

Country Status (2)

Country Link
FR (1) FR1506443A (en)
GB (1) GB1150533A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2307983A1 (en) * 1975-04-17 1976-11-12 Leray Jules Hydraulic transmission oil pump - has rotary control sleeve with cylindrical socket non parallel to sleeve axis and contg. trunnion of swash plate spider
DE8717455U1 (en) * 1987-08-26 1989-01-05 Interatom Gmbh, 5060 Bergisch Gladbach, De

Also Published As

Publication number Publication date
FR1506443A (en) 1967-12-22

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees