GB1435804A - Air-oil amplifier - Google Patents

Air-oil amplifier

Info

Publication number
GB1435804A
GB1435804A GB3534973A GB3534973A GB1435804A GB 1435804 A GB1435804 A GB 1435804A GB 3534973 A GB3534973 A GB 3534973A GB 3534973 A GB3534973 A GB 3534973A GB 1435804 A GB1435804 A GB 1435804A
Authority
GB
United Kingdom
Prior art keywords
valve
pressure
spool
pilot
port
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
GB3534973A
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.)
Koehring Co
Original Assignee
Koehring 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 Koehring Co filed Critical Koehring Co
Publication of GB1435804A publication Critical patent/GB1435804A/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
    • F15B13/0402—Valve members; Fluid interconnections therefor for linearly sliding valves, e.g. spool valves
    • 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

Landscapes

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

Abstract

1435804 Fluid-pressure servomotor systems KOEHRING CO 25 July 1973 [31 Aug 1972] 35349/73 Heading G3P An amplifier valve is operable in response to a relatively low-pressure pilot air-flow to control high-pressure oil delivery to an actuating cylinder of a distribution valve of a double-acting hydraulic cylinder or other reversible motor, e.g. of a backhoe. Air at a pressure determined by a manually controlled pilot valve (16), Fig. 4 (not shown), is delivered through port 19, Fig. 1, to act on diaphragm 28 and thereby move valve spool 26 from the position shown in which it communicates oil delivery port 23 with drain 37, to an operative position wherein it permits flow of highpressure oil from an inlet passage 21 to the port 23 and thence to the distribution-valve cylinder. A feedback passage 60 in the spool 26 continuously communicates the pressure of the delivery port with a chamber 32 wherein it exerts a force on the spool in opposition to that exerted thereon by pilot pressure, whereby the spool is controlled in a manner providing positive and precise actuation of the distribution valve on adjustment of the pilot valve.
GB3534973A 1972-08-31 1973-07-25 Air-oil amplifier Expired GB1435804A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US28554372A 1972-08-31 1972-08-31

Publications (1)

Publication Number Publication Date
GB1435804A true GB1435804A (en) 1976-05-19

Family

ID=23094692

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3534973A Expired GB1435804A (en) 1972-08-31 1973-07-25 Air-oil amplifier

Country Status (5)

Country Link
JP (1) JPS4964030A (en)
CA (1) CA970247A (en)
DE (1) DE2324148A1 (en)
FR (1) FR2198076B1 (en)
GB (1) GB1435804A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3335124A1 (en) * 1982-09-30 1984-04-05 Fife, Robert L., 98668 Vancouver, Wash. SERVO VALVE
CN103498950A (en) * 2013-10-06 2014-01-08 太原科技大学 Hydraulic direction-changing valve of special structure
CN114837801A (en) * 2021-02-02 2022-08-02 苏州恩都法汽车系统有限公司 Pressure reducing proportional valve and engine waste gas bypass control system

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2942103A1 (en) * 1979-10-18 1981-04-30 Eckardt Ag, 7000 Stuttgart Pneumatic intensifier with spring bellows and sealing rods - includes adjustable pretensioning spring between sealing rods and housing
DE3101904A1 (en) * 1981-01-22 1982-09-02 Alfred Teves Gmbh, 6000 Frankfurt Pressure-regulating valve
DE4421357A1 (en) * 1994-06-18 1995-12-21 Bosch Gmbh Robert Pneumatic directional valve
DE102009057807B4 (en) * 2009-12-10 2015-09-10 Festo Ag & Co. Kg Monostable valve with air spring

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3540478A (en) * 1966-11-02 1970-11-17 Yamada Yuki Seizo Co Ltd Diaphragm type pneumatic logic element
US3568718A (en) * 1969-02-17 1971-03-09 Koehring Co Pilot operated control valve

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3335124A1 (en) * 1982-09-30 1984-04-05 Fife, Robert L., 98668 Vancouver, Wash. SERVO VALVE
CN103498950A (en) * 2013-10-06 2014-01-08 太原科技大学 Hydraulic direction-changing valve of special structure
CN114837801A (en) * 2021-02-02 2022-08-02 苏州恩都法汽车系统有限公司 Pressure reducing proportional valve and engine waste gas bypass control system
CN114837801B (en) * 2021-02-02 2023-05-30 苏州恩都法汽车系统股份有限公司 Decompression proportional valve and engine waste gas bypass control system

Also Published As

Publication number Publication date
AU5416473A (en) 1974-10-10
FR2198076B1 (en) 1976-09-17
DE2324148A1 (en) 1974-03-14
CA970247A (en) 1975-07-01
JPS4964030A (en) 1974-06-21
FR2198076A1 (en) 1974-03-29

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee