GB490886A - Control device with pre-determined successive positions - Google Patents
Control device with pre-determined successive positionsInfo
- Publication number
- GB490886A GB490886A GB32650/37A GB3265037A GB490886A GB 490886 A GB490886 A GB 490886A GB 32650/37 A GB32650/37 A GB 32650/37A GB 3265037 A GB3265037 A GB 3265037A GB 490886 A GB490886 A GB 490886A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fluid
- piston
- inlet
- rod
- pawl
- 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
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/26—Locking mechanisms
- F15B15/261—Locking mechanisms using positive interengagement, e.g. balls and grooves, for locking in the end positions
-
- 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
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
- F15B11/12—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor providing distinct intermediate positions; with step-by-step action
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
490,886. Hydraulic apparatus. SERVO-FREIN DEWANDRE SOC. ANON. Nov. 26, 1937, No. 32650. Convention date, Nov. 27, 1936. [Class 69 (ii)] [Also in Groups XXVIII and XXIV] A power actuator comprises a rod 9 connected to the part to be actuated, oppositely toothed on two sides, and connected to a piston 8 by which it is moved under the influence of fluid under pressure supplied through an inlet 36. This fluid also enters a conduit 26 and raises a piston 17 through which the rod passes, and with it a pawl 20 which engages and is pushed back by one of the lower teeth 10 until a corresponding upper tooth 11 arrives opposite a locking member 32. Movement in either direction is thus prevented. By interrupting the fluid supply, the pawl 20 is released, whereupon further supply of fluid will cause a further movement to the extent of one tooth. By interrupting the fluid supply through the inlet 36 and supplying fluid through an inlet 37, the detent 32 is released by raising a piston 28, and a spring 13 returns the rod to its initial position.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR490886X | 1936-11-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB490886A true GB490886A (en) | 1938-08-23 |
Family
ID=8904398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB32650/37A Expired GB490886A (en) | 1936-11-27 | 1937-11-26 | Control device with pre-determined successive positions |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB490886A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0224914A1 (en) * | 1985-12-05 | 1987-06-10 | Eride Rossato | Hydraulic cylinder-piston unit provided with a mechanical safety device, particularly for pantograph type motor vehicle lifts |
| US5205203A (en) * | 1985-12-05 | 1993-04-27 | Eride Rossato | Hydraulic cylinder-piston unit provided with a mechanical safety device, particularly for pantograph type motor vehicle lifts |
| GB2357806A (en) * | 1999-12-02 | 2001-07-04 | Trevor John Honour | Load bearing props |
| CN104088854A (en) * | 2014-07-06 | 2014-10-08 | 上海宏信设备工程有限公司 | Combined type pawl self-locking hydraulic oil cylinder |
| EP2802782A2 (en) * | 2012-01-13 | 2014-11-19 | Norgren GmbH | Position adjustment and position locking of a fluid operated actuator |
-
1937
- 1937-11-26 GB GB32650/37A patent/GB490886A/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0224914A1 (en) * | 1985-12-05 | 1987-06-10 | Eride Rossato | Hydraulic cylinder-piston unit provided with a mechanical safety device, particularly for pantograph type motor vehicle lifts |
| WO1987003655A1 (en) * | 1985-12-05 | 1987-06-18 | Eride Rossato | Hydraulic cylinder-piston unit provided with a mechanical safety device, particularly for pantograph type motor vehicle lifts |
| US5205203A (en) * | 1985-12-05 | 1993-04-27 | Eride Rossato | Hydraulic cylinder-piston unit provided with a mechanical safety device, particularly for pantograph type motor vehicle lifts |
| GB2357806A (en) * | 1999-12-02 | 2001-07-04 | Trevor John Honour | Load bearing props |
| EP2802782A2 (en) * | 2012-01-13 | 2014-11-19 | Norgren GmbH | Position adjustment and position locking of a fluid operated actuator |
| CN104088854A (en) * | 2014-07-06 | 2014-10-08 | 上海宏信设备工程有限公司 | Combined type pawl self-locking hydraulic oil cylinder |
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