GB931326A - Improvements in and relating to rotary actuators - Google Patents

Improvements in and relating to rotary actuators

Info

Publication number
GB931326A
GB931326A GB21536/60A GB2153660A GB931326A GB 931326 A GB931326 A GB 931326A GB 21536/60 A GB21536/60 A GB 21536/60A GB 2153660 A GB2153660 A GB 2153660A GB 931326 A GB931326 A GB 931326A
Authority
GB
United Kingdom
Prior art keywords
shaft
plate
bladder
housing
balls
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
GB21536/60A
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.)
Ledex Inc
Original Assignee
Ledex Inc
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 Ledex Inc filed Critical Ledex Inc
Publication of GB931326A publication Critical patent/GB931326A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H31/00—Other gearings with freewheeling members or other intermittently driving members
    • 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
    • F15B15/02—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member
    • F15B15/06—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member for mechanically converting rectilinear movement into non- rectilinear movement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/186—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions with reciprocation along the axis of oscillation

Landscapes

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

Abstract

931,326. Ratchet gearing. LEDEX Inc. June 20, 1960 [June 19, 1959], No. 21536/60. Class 80 (3). [Also in Group XXIX] A fluid-operated actuator comprises a shaft 22 journalled for rotation in a housing 10 having a toroidal bladder means 34 forming an expansible chamber, and a mechanism 52, 62, 64 for converting an axial thrust resulting from expansion of the bladder into a rotary movement of the shaft. The bladder which has a normally open seam 36 closed by being clamped between parts 12, 14 of the housing, abuts a thrust plate 46 having a groove engaged by balls 54 in turn engaging a groove in a plate 52 splined to the shaft 22. The plate 52 is formed with arcuate inclined grooves 66 co-operating with balls 64 in similar grooves 68 in a plate 62 which engages a clutch disc 72 on the housing. The shaft is provided with a detent wheel 80 having notches engageable by a spring-pressed ball 82. When fluid pressure is supplied through a port 40 to the bladder, the plates 48, 52, 62 are urged to the right, the grooves 66, 68 acting through the balls 64 to apply a torque to the plates 52, 62 to rotate plate 52 and the shaft 22, plate 62 being held against rotation by the friction disc 72 and the wheel 80 rotated so that the ball 82 engages a different notch. Upon the release of fluid pressure, the plate 62 is disengaged from the friction disc and returned to its initial position relative to plate 52 by a spring 78, the ball 82 and wheel 80 maintaining the shaft in its new position. Repeated admissions of fluid-pressure to the bladder thus provide a step-by-step rotation of the shaft 22. Extrusion of the bladder past the thrust plate 46 is prevented by overlapping shims 48, 50, one closely fitting a sleeve on the shaft and the other closely fitting the inner surface of the housing. Two similar actuators plated back-to-back may be combined into a unit having a single shaft, fluid pressure supplied to one or other of the actuators rotating the shaft step-by-step in one direction or the other.
GB21536/60A 1959-06-19 1960-06-20 Improvements in and relating to rotary actuators Expired GB931326A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US821447A US2973748A (en) 1959-06-19 1959-06-19 Rotary actuators

Publications (1)

Publication Number Publication Date
GB931326A true GB931326A (en) 1963-07-17

Family

ID=25233436

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21536/60A Expired GB931326A (en) 1959-06-19 1960-06-20 Improvements in and relating to rotary actuators

Country Status (2)

Country Link
US (1) US2973748A (en)
GB (1) GB931326A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3308410A (en) * 1961-01-30 1967-03-07 Ledex Inc Rotary actuator having associated clutch means
BE633636A (en) * 1962-06-26
US3186311A (en) * 1962-10-03 1965-06-01 Carl M Carlson Air impulse counter
US3910163A (en) * 1972-04-24 1975-10-07 Century Data Systems Inc Pneumatic actuator for tape reel hub
FR2546498B1 (en) * 1983-05-24 1985-07-19 Lebre Charles LOAD LIFTING DEVICE WITH CONTROLLED LOAD RETURN AND TRANSPALETTE TROLLEY EQUIPPED WITH SUCH A DEVICE
US5287700A (en) * 1992-10-14 1994-02-22 Mcdonnell Douglas Helicopter Company Flexible bellows actuation system
JP7246867B2 (en) * 2018-05-23 2023-03-28 株式会社ダイヤメット sintered bearing

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2135617A (en) * 1936-07-18 1938-11-08 Gen Motors Corp Hydraulic clutch throw-out
US2250734A (en) * 1939-09-26 1941-07-29 Wallace S Thompson Dirigible headlight
US2465560A (en) * 1943-12-24 1949-03-29 Hans G Warnke Leakproof cylinder
US2883144A (en) * 1957-01-24 1959-04-21 Westinghouse Air Brake Co Fluid pressure operated flow control valve device
US2828636A (en) * 1957-01-25 1958-04-01 Monroe Calculating Machine Electromagnetically operated rotary actuator

Also Published As

Publication number Publication date
US2973748A (en) 1961-03-07

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