GB1160907A - Hydraulic System - Google Patents

Hydraulic System

Info

Publication number
GB1160907A
GB1160907A GB50372/66A GB5037266A GB1160907A GB 1160907 A GB1160907 A GB 1160907A GB 50372/66 A GB50372/66 A GB 50372/66A GB 5037266 A GB5037266 A GB 5037266A GB 1160907 A GB1160907 A GB 1160907A
Authority
GB
United Kingdom
Prior art keywords
rams
pump
valve
pressure
line
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
GB50372/66A
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.)
Navistar Inc
Original Assignee
International Harverster Corp
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 International Harverster Corp filed Critical International Harverster Corp
Publication of GB1160907A publication Critical patent/GB1160907A/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
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/30525—Directional control valves, e.g. 4/3-directional control valve
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/31—Directional control characterised by the positions of the valve element
    • F15B2211/3105—Neutral or centre positions
    • F15B2211/3116—Neutral or centre positions the pump port being open in the centre position, e.g. so-called open centre
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/315—Directional control characterised by the connections of the valve or valves in the circuit
    • F15B2211/3157—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source, an output member and a return line
    • F15B2211/31576—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source, an output member and a return line having a single pressure source and a single output member
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/32—Directional control characterised by the type of actuation
    • F15B2211/321—Directional control characterised by the type of actuation mechanically
    • F15B2211/322—Directional control characterised by the type of actuation mechanically actuated by biasing means, e.g. spring-actuated
    • F15B2211/323—Directional control characterised by the type of actuation mechanically actuated by biasing means, e.g. spring-actuated the biasing means being adjustable
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/45—Control of bleed-off flow, e.g. control of bypass flow to the return line
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/87169—Supply and exhaust
    • Y10T137/87177—With bypass
    • Y10T137/87185—Controlled by supply or exhaust valve

Abstract

1,160,907. Hydraulic apparatus. INTERNATIONAL HARVESTER CO. Nov. 10, 1966 [May 6, 1966], No. 50372/66. Heading F1P. A hydraulic system includes a pair of piston- and-cylinder units, or rams, 11, 12 that are fed with working fluid by a pump 14 through control valves 100, 200, which are mechanically coupled to manually-operated valves 300, 400, respectively, a pressure-operated by-pass valve 17 being furnished on the output side of the pump so that when the rams are rendered inoperative by the control valves the pump can be unloaded. The valve 17 is connected by a spring 31 to an actuator, or operating means, 30 to which pressure is communicated from the pump through a pipe, or line, 33 so as to close the valve whenever either of the rams is set in operation. When neither of the rams is in operation the pressure in a line 16 exceeds that in the line 33 due to frictional losses, thereby rendering the valve 17 open.
GB50372/66A 1966-05-06 1966-11-10 Hydraulic System Expired GB1160907A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US54816766A 1966-05-06 1966-05-06

Publications (1)

Publication Number Publication Date
GB1160907A true GB1160907A (en) 1969-08-06

Family

ID=24187698

Family Applications (1)

Application Number Title Priority Date Filing Date
GB50372/66A Expired GB1160907A (en) 1966-05-06 1966-11-10 Hydraulic System

Country Status (3)

Country Link
US (1) US3443483A (en)
DE (1) DE1673580B1 (en)
GB (1) GB1160907A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2136055A (en) * 1983-02-25 1984-09-12 Same Spa Hydraulic Feed Circuits for Actuators

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2259294C3 (en) * 1972-12-04 1979-01-04 Robert Bosch Gmbh, 7000 Stuttgart Hydraulic device for controlling a system with at least one consumer
DE2301648A1 (en) * 1973-01-13 1974-07-18 Bosch Gmbh Robert HYDRAULIC CONTROL DEVICE
US3865013A (en) * 1973-11-12 1975-02-11 Worthington Cei Auxiliary tool control circuit
US4306413A (en) * 1975-06-30 1981-12-22 The United States Of America As Represented By The Secretary Of The Navy Hydraulic power and control system
FR2501765A1 (en) * 1981-03-10 1982-09-17 Mecanismes Comp Ind De LOCK, ESPECIALLY FOR A MOTOR VEHICLE DOOR

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2146176A (en) * 1939-02-07 Regulating device
US2651915A (en) * 1949-08-22 1953-09-15 Leo M Chattler Pump and motor hydraulic system, including reversing and automatic by-pass valve units
US3212523A (en) * 1963-09-27 1965-10-19 Parker Hannifin Corp Fluid system and relief valve assembly therefor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2136055A (en) * 1983-02-25 1984-09-12 Same Spa Hydraulic Feed Circuits for Actuators

Also Published As

Publication number Publication date
US3443483A (en) 1969-05-13
DE1673580B1 (en) 1970-11-12

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees