GB1187208A - Improvements in or relating to a Pilot-operable Hydraulic Valve - Google Patents

Improvements in or relating to a Pilot-operable Hydraulic Valve

Info

Publication number
GB1187208A
GB1187208A GB23301/66A GB2330166A GB1187208A GB 1187208 A GB1187208 A GB 1187208A GB 23301/66 A GB23301/66 A GB 23301/66A GB 2330166 A GB2330166 A GB 2330166A GB 1187208 A GB1187208 A GB 1187208A
Authority
GB
United Kingdom
Prior art keywords
valves
pilot
port
valve
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
GB23301/66A
Inventor
Frank Town
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.)
Dobson Ltd W E & F
WE&F Dobson Ltd
Original Assignee
Dobson Ltd W E & F
WE&F Dobson Ltd
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 Dobson Ltd W E & F, WE&F Dobson Ltd filed Critical Dobson Ltd W E & F
Priority to GB23301/66A priority Critical patent/GB1187208A/en
Priority to US640280A priority patent/US3477465A/en
Priority to US778177A priority patent/US3521455A/en
Publication of GB1187208A publication Critical patent/GB1187208A/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
    • F15B13/0401—Valve members; Fluid interconnections therefor
    • F15B13/0405—Valve members; Fluid interconnections therefor for seat valves, i.e. poppet 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
    • Y10T137/87169—Supply and exhaust
    • Y10T137/87217—Motor
    • Y10T137/87225—Fluid motor

Landscapes

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

Abstract

1,187,208. Valves. W. E. & F. DOBSON Ltd. 9 May, 1967 [25 May, 1966], No. 23301/66. Heading F2V. [Also in Division E1] A valve controlling the operation of longwall mining apparatus (see Division F1) comprises supply and exhaust valves 41, 45 which are urged to the position shown by pilot fluid acting on respective pistons 46, 47 to allow pressure fluid to flow to an advancing jack via inlet 30, passage 35 and outlet 31. The valves are retained in position after the pilot signal ceases by the pressure acting thereon in chambers 34, 32a. To reset the valves, pressure fluid is admitted to port 61 and acts on reset pistons 54, 57 to move the latter rightwards to seat valve 41 and unseat valve 45. Port 31 is now connected to exhaust port 33. The pilot fluid can be controlled by solenoid-operated valves.
GB23301/66A 1966-05-25 1966-05-25 Improvements in or relating to a Pilot-operable Hydraulic Valve Expired GB1187208A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB23301/66A GB1187208A (en) 1966-05-25 1966-05-25 Improvements in or relating to a Pilot-operable Hydraulic Valve
US640280A US3477465A (en) 1966-05-25 1967-05-22 Pilot-operable hydraulic valve
US778177A US3521455A (en) 1966-05-25 1968-11-22 Mining conveyor control means

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB23301/66A GB1187208A (en) 1966-05-25 1966-05-25 Improvements in or relating to a Pilot-operable Hydraulic Valve

Publications (1)

Publication Number Publication Date
GB1187208A true GB1187208A (en) 1970-04-08

Family

ID=10193416

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23301/66A Expired GB1187208A (en) 1966-05-25 1966-05-25 Improvements in or relating to a Pilot-operable Hydraulic Valve

Country Status (2)

Country Link
US (2) US3477465A (en)
GB (1) GB1187208A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4117706A (en) * 1977-09-23 1978-10-03 Jones & Laughlin Steel Corporation Remotely adjustable hydraulic pressure regulator
WO2019067422A1 (en) * 2017-09-29 2019-04-04 Fisher Controls International Llc Relay valve and force balancing method

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2362339A (en) * 1943-04-28 1944-11-07 Euclid Road Machinery Co Fluid operated servomotor
US2584890A (en) * 1946-06-07 1952-02-05 John T Leonard Lubricant measuring valve
US2778378A (en) * 1952-07-28 1957-01-22 Bendix Aviat Corp Combination sequence and locking valve
US2836196A (en) * 1955-08-25 1958-05-27 Bendix Aviat Corp Hydraulically-actuated 4-way valve
US2998026A (en) * 1957-11-27 1961-08-29 Logansport Machine Company Differential pressure air valve
US2952244A (en) * 1958-02-28 1960-09-13 Boeing Co Combined stabilization and control system
GB1023125A (en) * 1963-07-22 1966-03-16 Dowty Mining Equipment Ltd Mining apparatus
US3244193A (en) * 1964-02-24 1966-04-05 Gen Gas Light Co Multiple valve units
NL6600072A (en) * 1966-01-04 1967-07-05

Also Published As

Publication number Publication date
US3521455A (en) 1970-07-21
US3477465A (en) 1969-11-11

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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
427A Application made for restoration (sect. 27/1949)
427C Application for amendment of specification now open to opposition (sect. 27/1949)
427B Order made restoring the patent (sect. 27/1949)
PLE Entries relating assignments, transmissions, licences in the register of patents
PLNP Patent lapsed through nonpayment of renewal fees