ES304178A1 - Improvements in circuit control valve instruments (Machine-translation by Google Translate, not legally binding) - Google Patents

Improvements in circuit control valve instruments (Machine-translation by Google Translate, not legally binding)

Info

Publication number
ES304178A1
ES304178A1 ES304178A ES304178A ES304178A1 ES 304178 A1 ES304178 A1 ES 304178A1 ES 304178 A ES304178 A ES 304178A ES 304178 A ES304178 A ES 304178A ES 304178 A1 ES304178 A1 ES 304178A1
Authority
ES
Spain
Prior art keywords
valve
liquid
force
pressure
service passage
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
ES304178A
Other languages
Spanish (es)
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.)
Hydraulic Unit Specialties Co
Original Assignee
Hydraulic Unit Specialties 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 Hydraulic Unit Specialties Co filed Critical Hydraulic Unit Specialties Co
Publication of ES304178A1 publication Critical patent/ES304178A1/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
    • F15B13/01—Locking-valves or other detent i.e. load-holding devices
    • F15B13/015—Locking-valves or other detent i.e. load-holding devices using an enclosed pilot flow valve
    • 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
    • Y10T137/87233—Biased exhaust valve
    • Y10T137/87241—Biased closed

Landscapes

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

Abstract

Improvements in circuit control valve instruments, characterized by establishing circuit control means for a reversible liquid motor, comprising a body; a pair of service passages in the body any of which is responsible for the circulation of inlet liquid at a normally high pressure value on one side of a reversible hydromotor, while the other handles the return flow of the liquid from the opposite side of the engine; a pair of normally closed valves, which respond to the pressure, one for each service passage to regulate all liquid circulation, each of said valves moving to an open position in response to the incoming liquid stream under pressure in its service passage; means associated with each valve to translate the pressure of the liquid returning to its service passage in a force on the valve tending to open it; other means associated with each valve to translate the pressure of the liquid returning to its service passage in a force on the valve tending to keep it closed against said force that opens it; and means of controlling the force associated with each valve and sensitive to the pressure of the inlet liquid in the service passage for the other valve, to effect the reduction of said closing force on its valve to a value lower than said force opening in response to the presence of inlet liquid at said normally high pressure value in the service passage for the other valve mentioned and to effect the increase of the closing force on its valve according to a decrease in the pressure of the liquid inlet in the service passage of the aforementioned other valve. (Machine-translation by Google Translate, not legally binding)
ES304178A 1964-03-23 1964-09-18 Improvements in circuit control valve instruments (Machine-translation by Google Translate, not legally binding) Expired ES304178A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US35371064 US3250185A (en) 1964-03-23 1964-03-23 Circuit control valve instrumentality

Publications (1)

Publication Number Publication Date
ES304178A1 true ES304178A1 (en) 1964-11-16

Family

ID=23390237

Family Applications (1)

Application Number Title Priority Date Filing Date
ES304178A Expired ES304178A1 (en) 1964-03-23 1964-09-18 Improvements in circuit control valve instruments (Machine-translation by Google Translate, not legally binding)

Country Status (6)

Country Link
US (1) US3250185A (en)
BE (1) BE654189A (en)
DE (1) DE1242961B (en)
ES (1) ES304178A1 (en)
GB (1) GB1050181A (en)
NL (1) NL6503624A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3398649A (en) * 1966-11-16 1968-08-27 Borg Warner Hydraulic control system
US3665810A (en) * 1970-01-14 1972-05-30 Koehring Co Differential pressure holding valve
GB1340193A (en) * 1970-04-24 1973-12-12 Dowty Technical Dev Ltd Selector valves
US3714868A (en) * 1970-09-23 1973-02-06 Marotta Scientific Controls Valve system for proportional flow control for fluid-operated motor
US3857404A (en) * 1973-04-30 1974-12-31 Caterpillar Tractor Co Hydraulically operated lock valve assembly
US4114516A (en) * 1976-10-15 1978-09-19 Caterpillar Tractor Co. Anti-cavitation and pressure modulating relief valve for controlling hydraulic cylinders
US12085099B1 (en) * 2020-06-18 2024-09-10 Vacuworx Global, LLC Flow control block for use with a vacuum material handler

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE349305C (en) * 1919-08-24 1922-02-28 Ernst Mields Stop valve with remote control by a steam piston
FR873178A (en) * 1940-07-18 1942-07-01 Bmw Flugmotorenbau Gmbh Device for maintaining constant pressure in conduits or vessels filled with liquids or gases
GB753577A (en) * 1952-07-28 1956-07-25 Bendix Aviat Corp Improvements in or relating to combined sequence and locking to valves
US2926634A (en) * 1958-07-18 1960-03-01 Sherman Products Inc Flow control valve
US2980136A (en) * 1959-06-25 1961-04-18 Cessna Aircraft Co Hydraulic flow control system and valve with anti-cavitation feature
US2954011A (en) * 1959-06-25 1960-09-27 Cessna Aircraft Co Pressure fluid control system and valve
US3033233A (en) * 1959-07-03 1962-05-08 Cessna Aircraft Co Anti-cavitation control system and valve
US3198088A (en) * 1963-08-13 1965-08-03 Caterpillar Tractor Co Fluid motor control system

Also Published As

Publication number Publication date
NL6503624A (en) 1965-09-24
BE654189A (en) 1965-02-01
US3250185A (en) 1966-05-10
GB1050181A (en) 1900-01-01
DE1242961B (en) 1967-06-22

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