DE3176924D1 - Load responsive fluid control valve - Google Patents

Load responsive fluid control valve

Info

Publication number
DE3176924D1
DE3176924D1 DE8181902365T DE3176924T DE3176924D1 DE 3176924 D1 DE3176924 D1 DE 3176924D1 DE 8181902365 T DE8181902365 T DE 8181902365T DE 3176924 T DE3176924 T DE 3176924T DE 3176924 D1 DE3176924 D1 DE 3176924D1
Authority
DE
Germany
Prior art keywords
control
load responsive
control valve
fluid control
responsive fluid
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
DE8181902365T
Other languages
German (de)
Inventor
Tadeusz Budzich
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 Inc
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 Inc filed Critical Caterpillar Inc
Application granted granted Critical
Publication of DE3176924D1 publication Critical patent/DE3176924D1/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
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/0416—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor with means or adapted for load sensing
    • F15B13/0417—Load sensing elements; Internal fluid connections therefor; Anti-saturation or pressure-compensation valves

Abstract

The load responsive valve comprises a housing having an inlet chamber connected to a pump, a supply chamber connected to a fluid motor and an exhaust. A control orifice is interposed between the supply chamber and fluid motor. A fluid throttle is interposed between the inlet chamber and supply chamber. A first control is operable through the fluid throttle to maintain a pressure differential across the control orifice at a controlled constant level. A second control is operable through the first control to vary the level of the constant pressure differential proportionally in response to a control signal.
DE8181902365T 1981-08-20 1981-08-20 Load responsive fluid control valve Expired DE3176924D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1981/001120 WO1983000728A1 (en) 1981-08-20 1981-08-20 Load responsive fluid control valve

Publications (1)

Publication Number Publication Date
DE3176924D1 true DE3176924D1 (en) 1988-12-08

Family

ID=22161379

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8181902365T Expired DE3176924D1 (en) 1981-08-20 1981-08-20 Load responsive fluid control valve

Country Status (4)

Country Link
EP (1) EP0085674B1 (en)
JP (1) JPS58501283A (en)
DE (1) DE3176924D1 (en)
WO (1) WO1983000728A1 (en)

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3455210A (en) * 1966-10-26 1969-07-15 Eaton Yale & Towne Adjustable,metered,directional flow control arrangement
CH444601A (en) * 1966-12-13 1967-09-30 Beringer Hydraulik Gmbh Control device for hydraulically operated equipment
US3470694A (en) * 1968-04-30 1969-10-07 Weatherhead Co Flow proportional valve for load responsive system
US3841096A (en) * 1971-06-29 1974-10-15 H Metz Control and regulator device for a load-independent regulated hydraulic system
NL169628C (en) * 1971-06-29 1982-08-02 Ind En Handelmaatschappij Kopp CONTROL DEVICE FOR LAST-DEPENDENT CONTROL OF HYDRAULIC DRIVE DEVICES.
US4153075A (en) * 1975-11-26 1979-05-08 Tadeusz Budzich Load responsive control valve
US4089346A (en) * 1976-07-27 1978-05-16 Tadeusz Budzich Load responsive fluid control valves
US4209039A (en) * 1978-04-10 1980-06-24 Tadeusz Budzich Load responsive control valve
JPS54160976A (en) * 1978-06-09 1979-12-20 Fujikoshi Kk Flow control valve with pressure compensation
US4282898A (en) * 1979-11-29 1981-08-11 Caterpillar Tractor Co. Flow metering valve with operator selectable boosted flow
US4285195A (en) * 1980-01-02 1981-08-25 Tadeusz Budzich Load responsive control system

Also Published As

Publication number Publication date
WO1983000728A1 (en) 1983-03-03
EP0085674B1 (en) 1988-11-02
JPH0232483B2 (en) 1990-07-20
JPS58501283A (en) 1983-08-04
EP0085674A4 (en) 1986-02-13
EP0085674A1 (en) 1983-08-17

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee