GB1328750A - Valves for fluids - Google Patents

Valves for fluids

Info

Publication number
GB1328750A
GB1328750A GB5925471A GB5925471A GB1328750A GB 1328750 A GB1328750 A GB 1328750A GB 5925471 A GB5925471 A GB 5925471A GB 5925471 A GB5925471 A GB 5925471A GB 1328750 A GB1328750 A GB 1328750A
Authority
GB
United Kingdom
Prior art keywords
valve
spool
fluid
piston
pressure 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
GB5925471A
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.)
Sperry Corp
Original Assignee
Sperry Rand 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 Sperry Rand Corp filed Critical Sperry Rand Corp
Publication of GB1328750A publication Critical patent/GB1328750A/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
    • F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
    • F15B20/004—Fluid pressure supply failure
    • 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
    • F15B13/042—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure
    • F15B13/043—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure with electrically-controlled pilot valves
    • F15B13/0435—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure with electrically-controlled pilot valves the pilot valves being sliding valves
    • 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
    • Y10T137/86493—Multi-way valve unit
    • Y10T137/86574—Supply and exhaust
    • Y10T137/86582—Pilot-actuated

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Servomotors (AREA)
  • Preventing Unauthorised Actuation Of Valves (AREA)
  • Actuator (AREA)
  • Multiple-Way Valves (AREA)

Abstract

1328750 Fluid-pressure servomotors SPERRY RAND CORP 21 Dec 1971 [18 Feb 1971 59254/71 Heading G3P In the event of loss of pilot pressure fluid, a directional valve for use in hydraulic appliances comprising a main body 10 having a slidable spring-central spool 12 attached to an actuating piston 20 and a servomotor comprising a pilot valve spool 38 for admitting and releasing pressure fluid 10 and from the larger area (right in the figure) of the piston, is provided with an auxiliary valve, normally inoperative, but responsive to overtravel of the valve spool 38 (to the left) for releasing pressure fluid trapped in a port as 17 to both sides of the piston 20, (thus shifting the spool 12 to the left). Ports 15 and 17 communicate with reversible motor passageways, ports 14 and 19 communicate with tank return passageways. Spools 12, and 38 and auxiliary valve spool 96 are all provided to axial bores to provide a passageway for the release of the trapped fluid. The auxiliary valve is provided with a washer of which acts as a check valve. The pilot valve is actuated via a lever 52, which may be connected to any desired operating mechanism or, as shown, which is connected to a spring-centred plunger 70 held by detents (not shown) which in turn are releasable by a solenoid 62.
GB5925471A 1971-02-18 1971-12-21 Valves for fluids Expired GB1328750A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11637571A 1971-02-18 1971-02-18

Publications (1)

Publication Number Publication Date
GB1328750A true GB1328750A (en) 1973-08-30

Family

ID=22366803

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5925471A Expired GB1328750A (en) 1971-02-18 1971-12-21 Valves for fluids

Country Status (9)

Country Link
US (1) US3669147A (en)
JP (1) JPS5224703B1 (en)
AU (1) AU460376B2 (en)
CA (1) CA945868A (en)
DE (1) DE2202625C3 (en)
FR (1) FR2125572B1 (en)
GB (1) GB1328750A (en)
IT (1) IT945609B (en)
SE (1) SE362933B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4296649A (en) * 1979-04-04 1981-10-27 Deere & Company Hydraulically operated transmission control
DE19536553A1 (en) * 1995-09-30 1997-04-03 Eckehart Schulze Electro-hydraulic control valve arrangement
GB2577524B (en) 2018-09-27 2021-01-20 Pegler Yorkshire Group Ltd Plumbing fitting

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US638489A (en) * 1899-06-15 1899-12-05 Chester B Albree Motor for tools.
US2363111A (en) * 1941-12-02 1944-11-21 Vinco Corp Hydraulic valve
US2685794A (en) * 1951-01-08 1954-08-10 Northrop Aircraft Inc Load maintainer
US2906246A (en) * 1953-06-18 1959-09-29 Ross Operating Valve Co Control system for fluid actuated devices
FR1357067A (en) * 1963-02-20 1964-04-03 Device for automatic control of liquid transfer units
US3515032A (en) * 1968-10-31 1970-06-02 Caterpillar Tractor Co Pilot bleed system for remote control valve operation

Also Published As

Publication number Publication date
DE2202625C3 (en) 1979-02-01
FR2125572A1 (en) 1972-09-29
DE2202625B2 (en) 1978-06-08
DE2202625A1 (en) 1972-08-24
US3669147A (en) 1972-06-13
JPS5224703B1 (en) 1977-07-02
AU460376B2 (en) 1975-04-24
FR2125572B1 (en) 1975-10-24
AU3698071A (en) 1973-06-21
IT945609B (en) 1973-05-10
CA945868A (en) 1974-04-23
SE362933B (en) 1973-12-27

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee