YU48225B - PNEUMATIC CYLINDER WITH LOCKING IN THE END POSITION, SPECIFICALLY FOR STARTING THE SWITCH GAS VALVES - Google Patents
PNEUMATIC CYLINDER WITH LOCKING IN THE END POSITION, SPECIFICALLY FOR STARTING THE SWITCH GAS VALVESInfo
- Publication number
- YU48225B YU48225B YU152389A YU152389A YU48225B YU 48225 B YU48225 B YU 48225B YU 152389 A YU152389 A YU 152389A YU 152389 A YU152389 A YU 152389A YU 48225 B YU48225 B YU 48225B
- Authority
- YU
- Yugoslavia
- Prior art keywords
- locking
- piston
- cylinder
- rod
- balls
- Prior art date
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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
- Mechanical Operated Clutches (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
- Safety Valves (AREA)
- Lock And Its Accessories (AREA)
- Preventing Unauthorised Actuation Of Valves (AREA)
- Multiple-Way Valves (AREA)
Abstract
In a pneumatic actuator with locking means in end positions, especially for actuating smoke extractor flues in smoke and heat extracting installations, a double-ended piston (9) can be displaced by a pressure medium in a mating cylinder with two cylinder chambers (9a, 9b). For the purpose of reliable locking of the end positions, on both sides outside the closed cylinder chambers (9a, 9b) and in each case adjacent to one of said cylinder chambers a locking piston (3 or 4) can in each case be displaced concentrically with the piston rod (10), which locking piston is connected to the adjacent cylinder chamber (9a or 9b) in a manner conducting pressure medium. Each locking piston (3 or 4) has a sleeve-like section (e.g. 4a) which in one locking position embraces radially guided balls (ii). In this arrangement, the balls partially engage in an annular groove (e.g. 10a) connected to the piston rod (10). The sleeve-like section releases the balls radially outwards when it is moved away axially from them. In one embodiment of the pneumatic actuator, this locking device can be supplemented as a double-stroke cylinder by means of an additional locking rod on the piston rod and a pressure-controlled reversing valve, which actuates an additional locking piston co-operating with the additional locking rod. <IMAGE>
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SI8911523A SI8911523B (en) | 1988-10-13 | 1989-07-31 | Pneumatic actuator with locking means in the end position, especially for activating smoke extracting |
HR930767A HRP930767B1 (en) | 1988-10-13 | 1993-04-02 | A pneumatic actuator with locking means in end positions, especially for actuating smoke extractor flues |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE8812882U DE8812882U1 (en) | 1988-10-13 | 1988-10-13 | |
EP89112178A EP0363575B1 (en) | 1988-10-13 | 1989-07-04 | Pneumatic actuator with locking means in the end positions, especially for actuating smoke extractor flues |
Publications (2)
Publication Number | Publication Date |
---|---|
YU152389A YU152389A (en) | 1992-09-07 |
YU48225B true YU48225B (en) | 1997-08-22 |
Family
ID=6828832
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
YU152389A YU48225B (en) | 1988-10-13 | 1989-07-31 | PNEUMATIC CYLINDER WITH LOCKING IN THE END POSITION, SPECIFICALLY FOR STARTING THE SWITCH GAS VALVES |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0363575B1 (en) |
AT (1) | ATE111190T1 (en) |
DE (2) | DE8812882U1 (en) |
ES (1) | ES2060701T3 (en) |
YU (1) | YU48225B (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0692640A3 (en) * | 1994-06-14 | 1997-07-30 | Rasmussen Kann Ind As | A pressure medium controlled operator device for opening and closing a roof window or a hatch |
US6071096A (en) * | 1997-04-25 | 2000-06-06 | Grasl; Andreas | Pneumatic cylinder, in particular for actuating fume extraction valves in fume and heat extraction plants |
DE19826129C2 (en) | 1998-06-12 | 2000-07-20 | Andreas Grasl | Compressed air cylinder for actuating an adjustable element, in particular a smoke flap |
FR2802985B1 (en) * | 1999-12-23 | 2002-03-22 | Climax S A | INTERMEDIATE STOP POINT CYLINDER |
PL210645B1 (en) * | 2006-01-23 | 2012-02-29 | Rewa Społka Z Ograniczoną Odpowiedzialnością | Pneumatic-hydraulic servomotor with the plunger rod blockade |
AT12806U1 (en) * | 2011-11-25 | 2012-12-15 | Skardelly Thomas | CYLINDER WITH MECHANICAL UNLOCKING |
CN117404273B (en) * | 2023-12-14 | 2024-02-13 | 扬州鼎驰机械有限公司 | Piston type air compressor |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3397620A (en) * | 1966-10-06 | 1968-08-20 | Milwaukee Cylinder Corp | Fluid actuator with annular piston locking means |
AT302107B (en) * | 1970-10-27 | 1972-10-10 | Hoerbiger Ventilwerke Ag | Pneumatic or hydraulic actuating cylinder with a device for mechanically locking its actuating piston |
DE7426429U (en) * | 1974-08-02 | 1974-12-19 | Esser K Kg | Working cylinder that can be acted upon by a pressure medium |
US4248138A (en) * | 1978-09-19 | 1981-02-03 | Baker Cac, Inc. | Fail safe locking mechanism for fluid operated valve actuator |
DE2906819C2 (en) * | 1979-02-22 | 1983-05-26 | EHP Hugo Krüger KG Elektrik-Hydraulik-Pneumatik, 5828 Ennepetal | Pressurized gas-actuated double lifting cylinder, especially for domed rooflights |
DE2911071C2 (en) * | 1979-03-21 | 1985-08-29 | 4515 Bad Essen Fa. Rolf Andexser | Lock for pistons of hydraulic cylinders |
-
1988
- 1988-10-13 DE DE8812882U patent/DE8812882U1/de not_active Expired
-
1989
- 1989-07-04 DE DE58908312T patent/DE58908312D1/en not_active Expired - Fee Related
- 1989-07-04 AT AT89112178T patent/ATE111190T1/en not_active IP Right Cessation
- 1989-07-04 ES ES89112178T patent/ES2060701T3/en not_active Expired - Lifetime
- 1989-07-04 EP EP89112178A patent/EP0363575B1/en not_active Expired - Lifetime
- 1989-07-31 YU YU152389A patent/YU48225B/en unknown
Also Published As
Publication number | Publication date |
---|---|
EP0363575B1 (en) | 1994-09-07 |
ES2060701T3 (en) | 1994-12-01 |
ATE111190T1 (en) | 1994-09-15 |
YU152389A (en) | 1992-09-07 |
DE58908312D1 (en) | 1994-10-13 |
EP0363575A1 (en) | 1990-04-18 |
DE8812882U1 (en) | 1989-02-16 |
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