GB1029659A - Improvements relating to hydraulic pumps or motors of the piston-operated type - Google Patents

Improvements relating to hydraulic pumps or motors of the piston-operated type

Info

Publication number
GB1029659A
GB1029659A GB5862/62A GB586262A GB1029659A GB 1029659 A GB1029659 A GB 1029659A GB 5862/62 A GB5862/62 A GB 5862/62A GB 586262 A GB586262 A GB 586262A GB 1029659 A GB1029659 A GB 1029659A
Authority
GB
United Kingdom
Prior art keywords
pressure
piston
chamber
sleeve
pistons
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
GB5862/62A
Inventor
William Peter Billington
David Frank Howson
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.)
National Research Development Corp UK
Original Assignee
National Research Development Corp UK
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 National Research Development Corp UK filed Critical National Research Development Corp UK
Priority to GB5862/62A priority Critical patent/GB1029659A/en
Priority to US257997A priority patent/US3190224A/en
Priority to FR924820A priority patent/FR1351688A/en
Priority to DE19631453593 priority patent/DE1453593A1/en
Publication of GB1029659A publication Critical patent/GB1029659A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F01B1/0675—Controlling
    • F01B1/0682—Controlling by changing the effective cross sectional piston working surface
    • 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

1,029,659. Reciprocating pumps and motors. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Feb. 12, 1963 [Feb. 15, 1962], No. 5862/62. Heading F1A. In a pump or motor in which the capacity may be varied by selectively locking one of two concentric pistons while the other continues to reciprocate, the said one piston is held stationary by hydraulic pressure. The capacity may be selected by the output pressure of the pump or by varying the system base pressure. As shown in Fig. 2 control pressure fed to a chamber 42 causes a sleeve 35 to move down against the action of a spring 36 so that when the pistons 17, 27 reach the t.d.c. the sleeve portion 39 enters a central bore in the piston 27 so that its top face is cut off from the pressure chamber, the pressure in which holds the piston 27 against the plate 40. Reduction of pressure in the chamber 42 permits the sleeve 35 to rise so that the pistons again reciprocate together. In a modification, Fig. 4, the outer piston 60 is reciprocated and the head of the central piston 62 is cut off from the pressure chamber when an external sleeve 66 is moved down by central pressure and is held stationary by the pressure in the pressure chamber.
GB5862/62A 1962-02-15 1962-02-15 Improvements relating to hydraulic pumps or motors of the piston-operated type Expired GB1029659A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB5862/62A GB1029659A (en) 1962-02-15 1962-02-15 Improvements relating to hydraulic pumps or motors of the piston-operated type
US257997A US3190224A (en) 1962-02-15 1963-02-12 Hydraulic machines of the piston-operated type
FR924820A FR1351688A (en) 1962-02-15 1963-02-14 Hydraulic piston machines
DE19631453593 DE1453593A1 (en) 1962-02-15 1963-02-15 Improvement in hydraulic machines of the piston type

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5862/62A GB1029659A (en) 1962-02-15 1962-02-15 Improvements relating to hydraulic pumps or motors of the piston-operated type

Publications (1)

Publication Number Publication Date
GB1029659A true GB1029659A (en) 1966-05-18

Family

ID=9804008

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5862/62A Expired GB1029659A (en) 1962-02-15 1962-02-15 Improvements relating to hydraulic pumps or motors of the piston-operated type

Country Status (4)

Country Link
US (1) US3190224A (en)
DE (1) DE1453593A1 (en)
FR (1) FR1351688A (en)
GB (1) GB1029659A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4259894A (en) * 1976-06-08 1981-04-07 Institul de Cercetari si Proiectari pentru Utulaje de Constructii de Drumuri (I.C.PU.C.) Hydrostatic motor
US6347574B1 (en) * 1998-01-23 2002-02-19 Robert Bosch, Gmbh Radial piston pump for producing high pressure fuel

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3532398A (en) * 1968-09-11 1970-10-06 Rohr Corp Self-adjusting bearing
US3572856A (en) * 1968-09-27 1971-03-30 Gen Electric Apparatus for producing small displacements

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1602572A (en) * 1920-10-06 1926-10-12 George R Metcalf Jarring device
US2282556A (en) * 1938-12-05 1942-05-12 Hydraulic Brake Co Motor
US2285476A (en) * 1939-12-20 1942-06-09 Gunnar A Wahlmark Fluid motor
US2716965A (en) * 1951-12-03 1955-09-06 Mechanical Handling Sys Inc Fluid pressure actuated device having a number of predetermined positions

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4259894A (en) * 1976-06-08 1981-04-07 Institul de Cercetari si Proiectari pentru Utulaje de Constructii de Drumuri (I.C.PU.C.) Hydrostatic motor
US6347574B1 (en) * 1998-01-23 2002-02-19 Robert Bosch, Gmbh Radial piston pump for producing high pressure fuel

Also Published As

Publication number Publication date
FR1351688A (en) 1964-02-07
US3190224A (en) 1965-06-22
DE1453593A1 (en) 1969-02-13

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