GB683633A - Improved fluid-pressure actuator - Google Patents

Improved fluid-pressure actuator

Info

Publication number
GB683633A
GB683633A GB4504/50A GB450450A GB683633A GB 683633 A GB683633 A GB 683633A GB 4504/50 A GB4504/50 A GB 4504/50A GB 450450 A GB450450 A GB 450450A GB 683633 A GB683633 A GB 683633A
Authority
GB
United Kingdom
Prior art keywords
piston
brake
cylinder
disc
valve
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
GB4504/50A
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.)
Motors Liquidation Co
Original Assignee
Motors Liquidation 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 Motors Liquidation Co filed Critical Motors Liquidation Co
Publication of GB683633A publication Critical patent/GB683633A/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
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/26—Locking mechanisms
    • F15B15/262—Locking mechanisms using friction, e.g. brake pads
    • F15B15/264—Screw mechanisms attached to the piston
    • 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
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B2015/1495—Characterised by the construction of the motor unit of the straight-cylinder type with screw mechanism attached to the piston

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Braking Arrangements (AREA)
  • Actuator (AREA)

Abstract

683,633. Pneumatic single -stroke apparatus. GENERAL MOTORS CORPORATION. Feb. 22, 1950 [Feb. 25, 1949]. No. 4504/50. Class 8 (ii) [Also in Group XXIX] in a pneumatically-actuated piston and cylinder construction having control means 16 for supplying and draining air to either side of the piston 14, lock means mounted on the cylinder 12, and relative to which the piston is movable, retains the piston in any assumed position against an opposing load until application of air pressure to move the piston to another position and is automatically released upon such application of pressure to either side of the piston. The piston 14 has screwed to it a rotatable shaft 46 carrying at the cylinder head end a brake disc 72 pressed by a spring 74 against a stationary friction face 78. Unlocking is effected by air pressure acting behind a brake piston 84 the stem 82 of which displaces the disc 72 to allow rotation thereof and consequent displacement of the piston 14. Compressed air is supplied through a duct 106 to the control valve 16 which comprises a rotatable plug 142 abutting a turret 126 mounted on the cylinder head cap 24. With the valve 16 in the "lock" position both sides of the piston 14 and the brake cylinder are vented to atmosphere through valve ports 178, 182 respectively. The brake piston 84 and hence the disc 72 may be held in the displaced position to prevent automatic locking of the piston 14 by the stem of a manually operable screw 92.
GB4504/50A 1949-02-25 1950-02-22 Improved fluid-pressure actuator Expired GB683633A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US683633XA 1949-02-25 1949-02-25

Publications (1)

Publication Number Publication Date
GB683633A true GB683633A (en) 1952-12-03

Family

ID=22082065

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4504/50A Expired GB683633A (en) 1949-02-25 1950-02-22 Improved fluid-pressure actuator

Country Status (1)

Country Link
GB (1) GB683633A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2801615A (en) * 1954-02-19 1957-08-06 Gen Motors Corp Actuator with multiple disc type locking means
US2859734A (en) * 1954-10-07 1958-11-11 British Messier Ltd Hydraulic aircraft-control actuator
US2879746A (en) * 1955-12-08 1959-03-31 Gen Motors Corp Actuator with unidirectional locking means
DE1228115B (en) * 1958-11-08 1966-11-03 Sud Aviation Hydraulic lock
DE2754013A1 (en) * 1977-11-28 1979-05-31 Schweizerische Lokomotiv HYDRAULIC ACTUATION DEVICE, IN PARTICULAR FOR A HAND BRAKE OF A RAIL VEHICLE
EP0090540A2 (en) * 1982-03-29 1983-10-05 Pneumo Abex Corporation Fluid actuator with lock position indicating means
EP0469253A1 (en) * 1990-07-30 1992-02-05 UNIVER S.p.A. Fluid-operated, programmable, linear actuator
EP1170512A1 (en) * 2000-07-06 2002-01-09 Bümach Engineering International B.V. Fluid pressure actuator with mechanical locking device when unpressurized
EP1605171A3 (en) * 2004-06-11 2006-09-06 Bümach Engineering International B.V. Fluid pressure-actuated cylinder with mechanical locking
US9746100B2 (en) 2012-01-20 2017-08-29 Naf Ab Pneumatically drivable valve actuator and method of locking a valve closure element relative to a valve body

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2801615A (en) * 1954-02-19 1957-08-06 Gen Motors Corp Actuator with multiple disc type locking means
US2859734A (en) * 1954-10-07 1958-11-11 British Messier Ltd Hydraulic aircraft-control actuator
US2879746A (en) * 1955-12-08 1959-03-31 Gen Motors Corp Actuator with unidirectional locking means
DE1228115B (en) * 1958-11-08 1966-11-03 Sud Aviation Hydraulic lock
DE2754013A1 (en) * 1977-11-28 1979-05-31 Schweizerische Lokomotiv HYDRAULIC ACTUATION DEVICE, IN PARTICULAR FOR A HAND BRAKE OF A RAIL VEHICLE
EP0090540A2 (en) * 1982-03-29 1983-10-05 Pneumo Abex Corporation Fluid actuator with lock position indicating means
EP0090540A3 (en) * 1982-03-29 1984-09-12 Pneumo Corporation Fluid actuator with lock position indicating means
EP0469253A1 (en) * 1990-07-30 1992-02-05 UNIVER S.p.A. Fluid-operated, programmable, linear actuator
EP1170512A1 (en) * 2000-07-06 2002-01-09 Bümach Engineering International B.V. Fluid pressure actuator with mechanical locking device when unpressurized
EP1605171A3 (en) * 2004-06-11 2006-09-06 Bümach Engineering International B.V. Fluid pressure-actuated cylinder with mechanical locking
US9746100B2 (en) 2012-01-20 2017-08-29 Naf Ab Pneumatically drivable valve actuator and method of locking a valve closure element relative to a valve body

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