GB933424A - Improvements in or relating to rotary fluid pressure actuators - Google Patents
Improvements in or relating to rotary fluid pressure actuatorsInfo
- Publication number
- GB933424A GB933424A GB4483961A GB4483961A GB933424A GB 933424 A GB933424 A GB 933424A GB 4483961 A GB4483961 A GB 4483961A GB 4483961 A GB4483961 A GB 4483961A GB 933424 A GB933424 A GB 933424A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pistons
- cylinders
- port
- fluid
- shaft
- 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
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
- F15B15/02—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
- F15B15/065—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 the motor being of the rack-and-pinion type
-
- 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
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
- F26B17/10—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by fluid currents, e.g. issuing from a nozzle, e.g. pneumatic, flash, vortex or entrainment dryers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Actuator (AREA)
Abstract
933,424. Fluid-pressure apparatus. E. MATHEWS ENGINEERING CO. Ltd. May 31, 1962 [Dec. 14, 1961], No. 44839/61. Class 69 (2). A fluid-pressure actuator comprises a pair of double-acting pistons 25 mounted in juxtaposed and mutually-parallel cylinders 11, 12, an output shaft 23 mounted in bearings so as to extend between the cylinders and normal to their axes, and racks 26 on the pistons engaging a pinion 24 on the shaft. The cylinders are formed in a housing 10 which is formed with passages connected to ports 28, 29 and openings leading into the ends of the cylinders. The passages are arranged so that the port 28 is connected to the left-hand end of cylinder 11 and right-hand end of cylinder 12 and the port 29 is connected to the opposite ends of the cylinders whereby fluid supplied from a source under the control of a selector valve to port 28 or port 29 moves the pistons in one direction or the other to rotate the shaft which is mounted in bearings in the housing. The ends of the pistons are provided with plungers 46 urged outwardly by springs 47 to engage the openings at the ends of the cylinders as the pistons approach the ends of their strokes so that the flow of fluid from the cylinders is restricted to provide a dampening effect. The pistons are provided with seals 27 and the space between the seals is connected by a one-way valve to the outside of the body to relieve pressure in the central portions of the cylinders. The stroke of the pistons may be varied by altering the plungers 46 so that, when retracted, they still project from the ends of the pistons. Friction between the pistons and the walls of the cylinders may be reduced by forming the pistons with longitudinal grooves for receiving balls arranged to engage the bottoms of the grooves and the walls.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4483961A GB933424A (en) | 1961-12-14 | 1961-12-14 | Improvements in or relating to rotary fluid pressure actuators |
DE1962M0043268 DE1867899U (en) | 1961-12-14 | 1962-12-08 | HYDRAULICALLY ACTUATED DEVICE FOR DRIVING A SHAFT WITHIN A SPECIFIC ANGLE RANGE. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4483961A GB933424A (en) | 1961-12-14 | 1961-12-14 | Improvements in or relating to rotary fluid pressure actuators |
Publications (1)
Publication Number | Publication Date |
---|---|
GB933424A true GB933424A (en) | 1963-08-08 |
Family
ID=10434931
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4483961A Expired GB933424A (en) | 1961-12-14 | 1961-12-14 | Improvements in or relating to rotary fluid pressure actuators |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE1867899U (en) |
GB (1) | GB933424A (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3148595A (en) * | 1963-05-21 | 1964-09-15 | Ohio Oscillator Company | Fluid motor actuator |
US3447423A (en) * | 1966-08-10 | 1969-06-03 | Mathews Eng Co Ltd E | Rotary fluid pressure actuators |
DE2430268A1 (en) * | 1973-06-26 | 1975-01-16 | Keystone Int | PRESSURE MEDIUM DRIVE FOR BUTTONS, IN PARTICULAR FOR THROTTLE VALVES |
DE3710376A1 (en) * | 1987-03-28 | 1988-10-13 | Asea Brown Boveri | Drive device for a movable contact arm of an electrical switchgear unit |
EP0449803A1 (en) * | 1990-03-28 | 1991-10-02 | Hoerbiger Fluidtechnik Kg | Swivel drive |
US5117739A (en) * | 1990-10-15 | 1992-06-02 | C & C Manufacturing, Inc. | Fluid driven multi-axis apparatus |
US5323884A (en) * | 1991-05-02 | 1994-06-28 | Canon Kabushiki Kaisha | Shock absorbing apparatus and drive unit which uses the same |
WO1996035900A1 (en) * | 1995-05-12 | 1996-11-14 | Wes Technology Inc. | Hydraulic actuator for isolators |
CN112412227A (en) * | 2020-12-02 | 2021-02-26 | 合肥力驰信息科技发展有限公司 | Fire door is with starting and stopping equipment based on thermosetting resin flooding |
-
1961
- 1961-12-14 GB GB4483961A patent/GB933424A/en not_active Expired
-
1962
- 1962-12-08 DE DE1962M0043268 patent/DE1867899U/en not_active Expired
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3148595A (en) * | 1963-05-21 | 1964-09-15 | Ohio Oscillator Company | Fluid motor actuator |
US3447423A (en) * | 1966-08-10 | 1969-06-03 | Mathews Eng Co Ltd E | Rotary fluid pressure actuators |
DE2430268A1 (en) * | 1973-06-26 | 1975-01-16 | Keystone Int | PRESSURE MEDIUM DRIVE FOR BUTTONS, IN PARTICULAR FOR THROTTLE VALVES |
DE3710376A1 (en) * | 1987-03-28 | 1988-10-13 | Asea Brown Boveri | Drive device for a movable contact arm of an electrical switchgear unit |
EP0449803A1 (en) * | 1990-03-28 | 1991-10-02 | Hoerbiger Fluidtechnik Kg | Swivel drive |
US5117739A (en) * | 1990-10-15 | 1992-06-02 | C & C Manufacturing, Inc. | Fluid driven multi-axis apparatus |
US5323884A (en) * | 1991-05-02 | 1994-06-28 | Canon Kabushiki Kaisha | Shock absorbing apparatus and drive unit which uses the same |
WO1996035900A1 (en) * | 1995-05-12 | 1996-11-14 | Wes Technology Inc. | Hydraulic actuator for isolators |
CN112412227A (en) * | 2020-12-02 | 2021-02-26 | 合肥力驰信息科技发展有限公司 | Fire door is with starting and stopping equipment based on thermosetting resin flooding |
Also Published As
Publication number | Publication date |
---|---|
DE1867899U (en) | 1963-02-21 |
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