GB1386757A - Radial piston machine - Google Patents

Radial piston machine

Info

Publication number
GB1386757A
GB1386757A GB1551873A GB1551873A GB1386757A GB 1386757 A GB1386757 A GB 1386757A GB 1551873 A GB1551873 A GB 1551873A GB 1551873 A GB1551873 A GB 1551873A GB 1386757 A GB1386757 A GB 1386757A
Authority
GB
United Kingdom
Prior art keywords
piston
slipper
zones
head
engaging
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
GB1551873A
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of GB1386757A publication Critical patent/GB1386757A/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
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/10—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement the cylinders being movable, e.g. rotary
    • F04B1/107—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement the cylinders being movable, e.g. rotary with actuating or actuated elements at the outer ends of the cylinders
    • F04B1/1071—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement the cylinders being movable, e.g. rotary with actuating or actuated elements at the outer ends of the cylinders with rotary cylinder blocks
    • 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
    • F01B1/00—Reciprocating-piston machines or engines characterised by number or relative disposition of cylinders or by being built-up from separate cylinder-crankcase elements
    • F01B1/06—Reciprocating-piston machines or engines characterised by number or relative disposition of cylinders or by being built-up from separate cylinder-crankcase elements with cylinders in star or fan arrangement
    • F01B1/0641—Details, component parts specially adapted for such machines
    • F01B1/0644—Pistons

Landscapes

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

Abstract

1386757 Reciprocating pumps and motors ROBERT BOSCH GmbH 30 March 1973 [19 April 1972] 15518/73 Heading F1A A radial piston pump or motor comprises a rotary cylinder block 9 with pistons 13 engaging an adjustable eccentric ring 17 via slippers 15, the diameter of the ball joint 23, 24 connecting each piston and slipper being at least 90% of the piston diameter, and the effective surface area of hydrostatic load relief zones 31, 34 on the surfaces of the shoe transmitting radial forces being at least 90% of the effective area of the piston. Zones 31, 34 are fed from the working cylinder via passages 32, 33. In Fig. 5 (not shown) the flow path to zones 31, 34 is throttled and the effective surface area of the relief zones is greater than that of the piston. A pin 25 connecting the piston to the slipper is force-fitted into slipper bore 26 and has a retaining head 29 with a partspherical surface 30 engaging a complementary surface on the piston. Each slipper is retained on the ring 17 by a hooked projection 35, Fig. 1. The ring eccentricity is adjusted by a hand wheel 21. In Fig. 6 (not shown) the relief zones are formed by clearances between part-spherical surfaces on the slipper and piston of different radii. In Fig. 7 (not shown) the piston has a part-spherical recess (56) engaged by a partspherical head (59) attached by a stem (58) to the slipper (57), a retaining pin being force-fitted at one end into the piston and having a convex head (62) at its other end engaging a complementary seat within the slipper head.
GB1551873A 1972-04-19 1973-03-30 Radial piston machine Expired GB1386757A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2218872A DE2218872A1 (en) 1972-04-19 1972-04-19 RADIAL PISTON MACHINE

Publications (1)

Publication Number Publication Date
GB1386757A true GB1386757A (en) 1975-03-12

Family

ID=5842408

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1551873A Expired GB1386757A (en) 1972-04-19 1973-03-30 Radial piston machine

Country Status (5)

Country Link
US (1) US3885457A (en)
JP (1) JPS4947909A (en)
DE (1) DE2218872A1 (en)
FR (1) FR2329156A5 (en)
GB (1) GB1386757A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4193336A (en) * 1974-05-14 1980-03-18 Karl Eickmann Radial piston machine with free-floating piston and piston-shoe assemblies
US4635534A (en) * 1974-11-29 1987-01-13 Karl Eickmann Pistons, piston shoes and rotors in pumps and motors
US4348946A (en) * 1977-02-03 1982-09-14 Karl Eickmann Radial piston machine with free--floating piston and piston--shoe assemblies
JPS551403A (en) * 1978-04-25 1980-01-08 Eickmann Karl Lubricator for antifriction device for swing shaft of radiallpiston pump* motor or transmission
US7600817B2 (en) * 2004-08-16 2009-10-13 Hill-Rom Services, Inc. Chair
US8142161B2 (en) * 2007-09-20 2012-03-27 General Electric Company Replaceable staking insert
US9212656B2 (en) 2011-02-21 2015-12-15 Honeywell International Inc. Piston-to-shoe interface lubrication method

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1930163A (en) * 1931-01-12 1933-10-10 Oilgear Co Pump
US2023216A (en) * 1932-01-29 1935-12-03 Hydraulic Press Mfg Co Variable delivery pump or motor
US2679210A (en) * 1947-09-18 1954-05-25 Schweizerische Lokomotiv Expansible chamber type radial piston engine
US2769393A (en) * 1951-03-23 1956-11-06 Sundstrand Machine Tool Co Hydraulic pump and control
US2901979A (en) * 1953-07-24 1959-09-01 North American Aviation Inc Hydraulic unit with improved piston assembly
US2972961A (en) * 1957-09-18 1961-02-28 Albert P Clark Hydrostatic lubricating apparatus
US3063380A (en) * 1959-07-24 1962-11-13 Thyco Engineering Corp Radial pump or motor
US3073254A (en) * 1959-12-24 1963-01-15 United Aircraft Corp Pressure balanced pump

Also Published As

Publication number Publication date
FR2329156A5 (en) 1977-05-20
JPS4947909A (en) 1974-05-09
DE2218872A1 (en) 1973-10-25
US3885457A (en) 1975-05-27

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PCNP Patent ceased through non-payment of renewal fee