DE8812882U1 - - Google Patents

Info

Publication number
DE8812882U1
DE8812882U1 DE8812882U DE8812882U DE8812882U1 DE 8812882 U1 DE8812882 U1 DE 8812882U1 DE 8812882 U DE8812882 U DE 8812882U DE 8812882 U DE8812882 U DE 8812882U DE 8812882 U1 DE8812882 U1 DE 8812882U1
Authority
DE
Germany
Prior art keywords
locking
piston
cylinder
rod
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
DE8812882U
Other languages
German (de)
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.)
FA OTTO GRASL 3452 HEILIGENEICH DE
Original Assignee
FA OTTO GRASL 3452 HEILIGENEICH DE
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
Priority to DE8812882U priority Critical patent/DE8812882U1/de
Application filed by FA OTTO GRASL 3452 HEILIGENEICH DE filed Critical FA OTTO GRASL 3452 HEILIGENEICH DE
Publication of DE8812882U1 publication Critical patent/DE8812882U1/de
Priority to ES89112178T priority patent/ES2060701T3/en
Priority to DE58908312T priority patent/DE58908312D1/en
Priority to AT89112178T priority patent/ATE111190T1/en
Priority to EP89112178A priority patent/EP0363575B1/en
Priority to YU152389A priority patent/YU48225B/en
Priority to SI8911523A priority patent/SI8911523B/en
Priority to DK385289A priority patent/DK172502B1/en
Priority to HU894103A priority patent/HU214169B/en
Priority to HR930767A priority patent/HRP930767B1/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
    • 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)
  • Preventing Unauthorised Actuation Of Valves (AREA)
  • Multiple-Way Valves (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Mechanical Operated Clutches (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
  • Safety Valves (AREA)
  • Lock And Its Accessories (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>
DE8812882U 1988-10-13 1988-10-13 Expired DE8812882U1 (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
DE8812882U DE8812882U1 (en) 1988-10-13 1988-10-13
ES89112178T ES2060701T3 (en) 1988-10-13 1989-07-04 PNEUMATIC CYLINDER WITH LOCKING OF ITS FINAL POSITION, ESPECIALLY FOR THE OPERATION OF TILT GATES FOR SMOKE EXIT.
DE58908312T DE58908312D1 (en) 1988-10-13 1989-07-04 Compressed air cylinder with end position lock, in particular for actuating smoke flaps.
AT89112178T ATE111190T1 (en) 1988-10-13 1989-07-04 COMPRESSED AIR CYLINDERS WITH END POSITION LOCKING, ESPECIALLY FOR ACTIVATING SMOKE EXHAUST FLAPS.
EP89112178A EP0363575B1 (en) 1988-10-13 1989-07-04 Pneumatic actuator with locking means in the end positions, especially for actuating smoke extractor flues
YU152389A YU48225B (en) 1988-10-13 1989-07-31 PNEUMATIC CYLINDER WITH LOCKING IN THE END POSITION, SPECIFICALLY FOR STARTING THE SWITCH GAS VALVES
SI8911523A SI8911523B (en) 1988-10-13 1989-07-31 Pneumatic actuator with locking means in the end position, especially for activating smoke extracting
DK385289A DK172502B1 (en) 1988-10-13 1989-08-07 A compressed air cylinder provided with end position locking, in particular for activating smoke ventilation valves
HU894103A HU214169B (en) 1988-10-13 1989-08-10 Pneumatic cylinder provided with end positions locking mainly for operating smoke-pipe clack
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 (1)

Application Number Priority Date Filing Date Title
DE8812882U DE8812882U1 (en) 1988-10-13 1988-10-13

Publications (1)

Publication Number Publication Date
DE8812882U1 true DE8812882U1 (en) 1989-02-16

Family

ID=6828832

Family Applications (2)

Application Number Title Priority Date Filing Date
DE8812882U Expired DE8812882U1 (en) 1988-10-13 1988-10-13
DE58908312T Expired - Fee Related DE58908312D1 (en) 1988-10-13 1989-07-04 Compressed air cylinder with end position lock, in particular for actuating smoke flaps.

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE58908312T Expired - Fee Related DE58908312D1 (en) 1988-10-13 1989-07-04 Compressed air cylinder with end position lock, in particular for actuating smoke flaps.

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)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007084018A1 (en) * 2006-01-23 2007-07-26 'rewa' Sp. Z O.O. Pneumatic-and-hydraulic cylinder with piston rod interlock

Families Citing this family (6)

* Cited by examiner, † Cited by third party
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
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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007084018A1 (en) * 2006-01-23 2007-07-26 'rewa' Sp. Z O.O. Pneumatic-and-hydraulic cylinder with piston rod interlock

Also Published As

Publication number Publication date
YU48225B (en) 1997-08-22
DE58908312D1 (en) 1994-10-13
ATE111190T1 (en) 1994-09-15
EP0363575A1 (en) 1990-04-18
ES2060701T3 (en) 1994-12-01
YU152389A (en) 1992-09-07
EP0363575B1 (en) 1994-09-07

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