GB733840A - Improved actuator - Google Patents

Improved actuator

Info

Publication number
GB733840A
GB733840A GB32526/53A GB3252653A GB733840A GB 733840 A GB733840 A GB 733840A GB 32526/53 A GB32526/53 A GB 32526/53A GB 3252653 A GB3252653 A GB 3252653A GB 733840 A GB733840 A GB 733840A
Authority
GB
United Kingdom
Prior art keywords
screw
piston
fluid
brake
actuator
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
GB32526/53A
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 GB733840A publication Critical patent/GB733840A/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
    • F15B13/10—Special arrangements for operating the actuated device with or without using fluid pressure, e.g. for emergency use

Abstract

733,840. Hydraulic jacks. GENERAL MOTORS CORPORATION. Nov. 24, 1953 [Dec. 5, 1952], No. 32526/53. Class 69 (2). [Also in Groups XXVIII and XXX] An actuator is provided with alternative fluid pressure and screw and nut drives each of which can operate the actuator in both directions. A piston 11 secured to a movable actuating rod 15 has journalled therein one end of a screw 20 engaged with a ball nut 44 which is rotatable through a worm drive 55, 62 by a reversible electric motor 68, but which is adapted to be held from rotation by a magnetic brake and clutch mechanism (not shown) when the motor is de-energized. A rod 29 which is splined to screw 20 and is journalled at 37 in the actuator casing carries a disc brake 31 which when the fluid pressure circuit is de-energized is urged into engagement with the end 32 of the casing by a spring-loaded piston 37 so locking the screw. The fluid-pressure circuit is arranged so that on admission of fluid to either side of piston 11 through ports 60, 61 fluid is simultaneously admitted through port 40. This releases brake 31 so allowing the screw to rotate and the piston 11 to move. With the brake 31 operative and the screw thereby held from rotation, rotation of nut 44 by the motor 68 again effects movement of the piston and the rod 15. In a modification (not shown) the disc brake 31 may be replaced by a dog tooth arrangement.
GB32526/53A 1952-12-05 1953-11-24 Improved actuator Expired GB733840A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US733840XA 1952-12-05 1952-12-05

Publications (1)

Publication Number Publication Date
GB733840A true GB733840A (en) 1955-07-20

Family

ID=22113379

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32526/53A Expired GB733840A (en) 1952-12-05 1953-11-24 Improved actuator

Country Status (1)

Country Link
GB (1) GB733840A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2263465A (en) * 1992-01-09 1993-07-28 Link Miles Ltd Electrically powered actuator
EP1515415A2 (en) * 2003-09-09 2005-03-16 Ntn Corporation Electrically driven linear actuator
EP1515051A1 (en) * 2003-09-12 2005-03-16 Messier Bugatti Actuator with two operating modes
EP1564417A1 (en) * 2004-02-17 2005-08-17 Liebherr-Aerospace Lindenberg GmbH Fluid pressure actuator with mechanical back-up
DE102013007604A1 (en) * 2013-05-03 2014-11-06 Liebherr-Aerospace Lindenberg Gmbh Linear actuator with unlocking device and landing gear for an aircraft
EP2503173A4 (en) * 2009-11-19 2015-08-19 Aisin Seiki Clutch actuator
CN111703570A (en) * 2020-06-16 2020-09-25 贵州航天林泉电机有限公司 Electric mechanism for locking helicopter universal tail wheel
DE102021200980A1 (en) 2021-02-03 2022-08-04 Festo Se & Co. Kg linear drive device

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5346045A (en) * 1992-01-09 1994-09-13 Link-Miles Limited Electrically powered actuator
GB2263465B (en) * 1992-01-09 1995-05-31 Link Miles Ltd Electrically powered actuator
GB2263465A (en) * 1992-01-09 1993-07-28 Link Miles Ltd Electrically powered actuator
EP1515415A3 (en) * 2003-09-09 2006-11-02 Ntn Corporation Electrically driven linear actuator
EP1515415A2 (en) * 2003-09-09 2005-03-16 Ntn Corporation Electrically driven linear actuator
EP1515051A1 (en) * 2003-09-12 2005-03-16 Messier Bugatti Actuator with two operating modes
FR2859770A1 (en) * 2003-09-12 2005-03-18 Messier Bugatti ACTUATOR WITH TWO OPERATING MODES
EP1564417A1 (en) * 2004-02-17 2005-08-17 Liebherr-Aerospace Lindenberg GmbH Fluid pressure actuator with mechanical back-up
EP2503173A4 (en) * 2009-11-19 2015-08-19 Aisin Seiki Clutch actuator
DE102013007604A1 (en) * 2013-05-03 2014-11-06 Liebherr-Aerospace Lindenberg Gmbh Linear actuator with unlocking device and landing gear for an aircraft
CN111703570A (en) * 2020-06-16 2020-09-25 贵州航天林泉电机有限公司 Electric mechanism for locking helicopter universal tail wheel
CN111703570B (en) * 2020-06-16 2023-04-07 贵州航天林泉电机有限公司 Electric mechanism for locking helicopter universal tail wheel
DE102021200980A1 (en) 2021-02-03 2022-08-04 Festo Se & Co. Kg linear drive device

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