GB1447015A - Hydraulic circuits - Google Patents

Hydraulic circuits

Info

Publication number
GB1447015A
GB1447015A GB3807774A GB3807774A GB1447015A GB 1447015 A GB1447015 A GB 1447015A GB 3807774 A GB3807774 A GB 3807774A GB 3807774 A GB3807774 A GB 3807774A GB 1447015 A GB1447015 A GB 1447015A
Authority
GB
United Kingdom
Prior art keywords
valves
service
ports
actuators
actuator
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
GB3807774A
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.)
Caterpillar Inc
Original Assignee
Caterpillar Tractor 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 Caterpillar Tractor Co filed Critical Caterpillar Tractor Co
Publication of GB1447015A publication Critical patent/GB1447015A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/22—Synchronisation of the movement of two or more servomotors

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Multiple-Way Valves (AREA)

Abstract

1447015 Hydraulic control circuits CATERPILLAR TRACTOR CO 30 Aug 1974 [4 Sept 1973] 38077/74 Heading F1P Actuators 12, 13, Fig. 1, are operated simultaneously by a pair of spool valves 14, 16 having a common actuating means and service chambers 34, 36 and 59, 61, each valve having one service chamber in communication with one end of one actuator and its other service chamber in communication with one end of the other actuator, the inlet ports of the valves 31, 51 being interconnected by a restriction 28. As described the valves 14, 16 are pilot controlled by a valve 17 supplied by a pump 18. Pumps 21, 22 supply valves 14, 16. Make up valves 43, 44 and 63, 64 prevent cavitation by connecting the service ports to the drain ports whenever pressure in the latter rise above that in the former. The valves 14, 16 are connected by pressure equalizing conduits 73, 74 and a common drain manifold 76 is provided. Fig. 2 (not shown), illustrates the physical arrangement of the valves and actuators.
GB3807774A 1973-09-04 1974-08-30 Hydraulic circuits Expired GB1447015A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00394192A US3847059A (en) 1973-09-04 1973-09-04 Dual control valve assembly

Publications (1)

Publication Number Publication Date
GB1447015A true GB1447015A (en) 1976-08-25

Family

ID=23557939

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3807774A Expired GB1447015A (en) 1973-09-04 1974-08-30 Hydraulic circuits

Country Status (6)

Country Link
US (1) US3847059A (en)
JP (1) JPS5647120B2 (en)
BE (1) BE819531A (en)
CA (1) CA1027009A (en)
DE (1) DE2440555C2 (en)
GB (1) GB1447015A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4147093A (en) * 1977-03-04 1979-04-03 J. I. Case Company Self-actuating fluid holding system
US4199293A (en) * 1977-03-07 1980-04-22 Caterpillar Tractor Co. High pressure implement circuit for loader with slow and fast dump position
US4535821A (en) * 1982-05-19 1985-08-20 John Anderson Three way valve
US4619187A (en) * 1982-10-25 1986-10-28 Caterpillar Inc. Fluid control for two independent actuators
JPS6051233U (en) * 1983-09-14 1985-04-10 秀島　頴雄 Roof drain structure
JP2869265B2 (en) * 1992-05-29 1999-03-10 三菱電機株式会社 Breaker
US5471837A (en) * 1993-09-03 1995-12-05 Caterpillar Inc. Hydraulic system using multiple substantially identical valve assemblies
US20140373940A1 (en) * 2013-06-20 2014-12-25 Caterpillar Inc. Fluid drain manifold
FR3026321B1 (en) * 2014-09-25 2021-02-12 Parker Hannifin Mfg France Sas MODULAR FLUID DISPENSER, INCLUDING FIVE ORIFICES AND TWO DRAWERS

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1900050A (en) * 1931-02-24 1933-03-07 Hydraulic Press Mfg Co Hydraulic press platen travel equalizer
US2449269A (en) * 1945-08-10 1948-09-14 Plant Choate Mfg Co Inc Selective hydraulic control structure
US3295420A (en) * 1964-12-14 1967-01-03 Boeing Co Hydraulic actuator
US3486418A (en) * 1968-05-22 1969-12-30 Caterpillar Tractor Co Control system for dual motors

Also Published As

Publication number Publication date
DE2440555C2 (en) 1984-08-30
DE2440555A1 (en) 1975-03-13
US3847059A (en) 1974-11-12
JPS5054069A (en) 1975-05-13
CA1027009A (en) 1978-02-28
JPS5647120B2 (en) 1981-11-07
BE819531A (en) 1975-03-04

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19920830