EP0328934B1 - Ferme-porte - Google Patents

Ferme-porte Download PDF

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Publication number
EP0328934B1
EP0328934B1 EP89101667A EP89101667A EP0328934B1 EP 0328934 B1 EP0328934 B1 EP 0328934B1 EP 89101667 A EP89101667 A EP 89101667A EP 89101667 A EP89101667 A EP 89101667A EP 0328934 B1 EP0328934 B1 EP 0328934B1
Authority
EP
European Patent Office
Prior art keywords
housing
door
door closer
spring
throttle
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 - Lifetime
Application number
EP89101667A
Other languages
German (de)
English (en)
Other versions
EP0328934A1 (fr
Inventor
Gerhard SCHRÖDER
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.)
Gretsch Unitas GmbH Baubeschlaege
Original Assignee
Gretsch Unitas GmbH Baubeschlaege
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 Gretsch Unitas GmbH Baubeschlaege filed Critical Gretsch Unitas GmbH Baubeschlaege
Publication of EP0328934A1 publication Critical patent/EP0328934A1/fr
Application granted granted Critical
Publication of EP0328934B1 publication Critical patent/EP0328934B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F3/00—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
    • E05F3/04—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes
    • E05F3/10—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes with a spring, other than a torsion spring, and a piston, the axes of which are the same or lie in the same direction
    • E05F3/102—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes with a spring, other than a torsion spring, and a piston, the axes of which are the same or lie in the same direction with rack-and-pinion transmission between driving shaft and piston within the closer housing
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F3/00—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
    • E05F3/22—Additional arrangements for closers, e.g. for holding the wing in opened or other position
    • E05F3/225—Additional arrangements for closers, e.g. for holding the wing in opened or other position mounted at the bottom of wings, e.g. details related to seals, covers, connections to the wings, embedding in the floor
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F3/00—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
    • E05F3/22—Additional arrangements for closers, e.g. for holding the wing in opened or other position
    • E05F3/227—Additional arrangements for closers, e.g. for holding the wing in opened or other position mounted at the top of wings, e.g. details related to closer housings, covers, end caps or rails therefor
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F3/00—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
    • E05F3/22—Additional arrangements for closers, e.g. for holding the wing in opened or other position
    • E05F2003/228—Arrangements where the end of the closer arm is sliding in a track
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/10—Covers; Housings
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2600/00—Mounting or coupling arrangements for elements provided for in this subclass
    • E05Y2600/40—Mounting location; Visibility of the elements
    • E05Y2600/41—Concealed
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2600/00—Mounting or coupling arrangements for elements provided for in this subclass
    • E05Y2600/40—Mounting location; Visibility of the elements
    • E05Y2600/452—Mounting location; Visibility of the elements in or on the floor or wall
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
    • E05Y2800/15—Applicability
    • E05Y2800/17—Universally applicable
    • E05Y2800/176—Universally applicable on different wing types, weights or sizes
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
    • E05Y2800/20—Combinations of elements
    • E05Y2800/205—Combinations of elements forming a unit
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
    • E05Y2800/72—Sets of mutually exchangeable elements, e.g. modular
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/13—Type of wing
    • E05Y2900/132—Doors

Definitions

  • the invention relates to a door closer with a piston which can be displaced in a housing against the force of at least one return spring and a hydraulic overflow device from a front hydraulic space arranged on this side to a rear hydraulic space located on the other side of the piston.
  • Valves, throttle devices and the like Receiving basic housing and a flow channel-free spring housing, which is connected to the basic housing in a liquid-tight manner.
  • a door closer of this type is known from US-A-4665583.
  • door closers are known both as overhead door closers and as floor door closers.
  • the door to be closed is non-rotatably connected to its rotatable drive member when it is designed as a floor door closer.
  • the door closer housing With a so-called upper door closer the door closer housing is attached to the door.
  • a linkage connects to the fixed door frame.
  • the rotary movement of the door is transmitted via the drive member to a door closer mechanism, which converts the rotary movement of the drive member into a sliding movement of the piston.
  • the drive member is connected to a pinion which interacts with a rack of the piston.
  • the drive member can be coupled with a cam, which acts on a roller on a slide connected to a piston rod.
  • the piston is brought from a starting position into a displacement position under simultaneous tension or stronger tension of the return spring or springs supported on the piston on the one hand and on the housing on the other hand.
  • a hydraulic medium poured into the housing of the door closer flows largely unthrottled, for example from a front hydraulic chamber into a rear hydraulic chamber.
  • This overflow is caused by the piston movement, which reduces one hydraulic chamber and simultaneously enlarges the other.
  • the medium can overflow, for example, through a valve device in the piston and / or the piston rod.
  • the return spring pushes the piston back into its original position, whereby the two hydraulic chambers gradually return to their original size.
  • the medium flows in a different way, whereby it must flow through at least one throttle device.
  • door closers allow the door to be closed violently faster than is possible via the throttle device itself.
  • door closers can be equipped with a locking device, in particular a hydraulic locking device for the wide-open door. In the latter, too, at least one channel or additional channel runs in the housing of the door closer.
  • the drive element of the door closer can be equipped with different linkages or other mechanisms.
  • linkages or other mechanisms For example, there are simple scissor-type linkages, but also so-called parallel-arm linkages, which are preferred for aesthetic reasons.
  • the closing force can be adjustable in each case.
  • each door closer is provided with a different housing by the same manufacturer. Measured by the total number of door closers manufactured, there is only one proportion for each type small number of housings. This makes the manufacture of every single door closer expensive.
  • the door closer known from US-A-4665583 corresponding to the preamble of claim 1, also has a basic housing and a spring housing connected to it in a liquid-tight manner, which does not contain any hydraulic devices or flow channels.
  • US-A-4665583 contains no indication that the spring housing can be exchanged for another, in particular a longer or shorter one, which is why the person skilled in the art does not receive any suggestion for a "modular system for door closers" from this document.
  • the object of the invention is to provide a door closer of the generic type in such a way that its basic housing is suitable for a large number of different door closers, in order to reduce the manufacturing costs for door closers.
  • the door closer in the door closer according to the preamble of claim 1 with at least two housing channels of the basic housing connecting the front to the rear hydraulic chamber, at least one or at least one of an optionally flowable or one through a plug, a seal or the like .
  • Like. sealed housing channel You can now manufacture all types of door closers with one and the same basic housing, thereby achieving a high number of items and at the same time reducing manufacturing costs.
  • the Individual door closers differ, for example, for light, medium and heavy doors only in that springs of different strengths and therefore long springs have to be installed, the small spring taking up much less space than the medium or large one.
  • the spring housing is a simple part because it has no hydraulic channels and facilities to accommodate. These simple spring housings can be manufactured in different sizes or, more precisely, lengths and, as before, depending on the door size or weight, the required spring or springs can be used in conjunction with the associated spring housing.
  • each path is by means of at least one stopper, a seal or another known element that can be inserted tightly, for example a screw, a pressed-in bolt or the like. lockable.
  • the plug can of course also be a screw plug if the fastening bore is at least partially a threaded bore.
  • An advantageous embodiment of a door closer the housing, in particular on two opposite housing walls, has housing channels, each of which has at least one receptacle for a throttle screw, a throttle valve or the like. is assigned, according to claim 2, characterized in that a plug is screwed into at least one of the receptacles to interrupt the assigned channel.
  • the shape of the sealing plug must or the like to the extent of the throttle screw to be screwed in instead. correspond, as this is necessary for screwing in and shutting off the duct at the designated place.
  • a door closer the housing of which is equipped at the end of the basic housing remote from the spring housing by means of a sealed housing base, is characterized in accordance with claim 3, characterized in that the housing base is optionally provided with a valve unit and part of at least one throttle channel on the housing side.
  • the valve unit can interact with a further valve unit accommodated in the piston in a known manner.
  • FIGS. 5 to 8 identify that door closers of different strengths, hydraulically different working and equipped with different opening devices enable a large number of identical parts of a total production in the context of a series that all have one and the same basic housing. Different spring housings and / or opening devices can be mounted on this.
  • the spring housings are of course all the same, at least at their connection end. Expediently, however, they differ according to FIGS. 5 to 8 only in terms of their length. This can be increased in stages.
  • the parallel arm linkage 2 with the sliding arm 3 acts much more elegantly. However, it requires a different design of the mechanism which converts the rotary movement of the drive shaft 4 into a displacement movement of the piston 5 and is explained in more detail below. Only for the sake of completeness is it added that the door closer, regardless of its design, is generally designated 6 and that it is attached to the door 7.
  • the free end of the opening device generally designated 8, regardless of its design, is preferably attached to a fixed frame 9.
  • the upper pivot bearing of the door has the reference number 10.
  • the basic housing used in all embodiments of this series is designated by 11.
  • a spring housing 12, 13, 14 or 15 can be attached to it, in particular screwed on.
  • the larger length of the load spring 16 for the piston 5 which of course can extend partially into the basic housing.
  • a second loading spring 17 can also be installed. That or those in FIGS. 12 and 15 left end or ends are supported on the associated end of the piston 5, while the other end (s) abut on a spring plate 18. This component is advantageously part of an adjusting device 19 for the spring force.
  • a relatively long piston is used, between the two ends of which there is a recess 20 into which a pinion 21 or 22, which is coupled in a rotationally fixed manner to the drive shaft 4, engages.
  • the teeth of the pinion mesh with those of a rack 23 or 24 formed or attached to the piston.
  • the medium flows back from the rear cylinder space 26 into the front cylinder space 27 because the load spring or springs 16, 17 push the piston back into its initial position.
  • the hydraulic medium picks up but a different flow path, because the backflow must be throttled to cause the door to close slowly.
  • the throttled movement should be replaced at the end as far as possible by an unthrottled one, so that, for example, a latch of a lock installed in the door 7 can be actuated via the force of the springs or springs 16, 17.
  • throttle valves are used in the housing-side flow channels to restrict the backflow.
  • a particularly versatile and convenient door closer is equipped with four throttle valves 31 to 34, for example.
  • the throttle ducts are located on opposite walls 35 and 36 of the basic housing 11. Preferably, only the throttle valve 31 is inserted into the housing wall 35, while the other throttle valves 32 to 34 have been installed in the wall 36.
  • throttle valves If only one or at least not all of the throttle valves are required, their bores can be at least turned outwards by a stopper, a seal or the like. close. If the flow channel receiving this throttle valve is not to be flowed through at all, this seal or the like must. used deep enough or trained long enough.
  • the basic housing 11 can also have fastening holes, for example, through which fastening screws or the like. for the installation of the door closer.
  • fastening holes for example, through which fastening screws or the like. for the installation of the door closer.
  • clipped housing covers protect the throttle valves and make them inaccessible to unauthorized persons.
  • the piston in particular the rack 23 or 24 formed or fastened thereon, must also be designed according to the needs or the deploying device used.
  • a straight rack 23 is used, in the case of a parallel linkage 2 with a sliding arm 3, a rack 24, which is shaped in a special way and, if necessary, provided with special toothing 24, is required.
  • the pinion 22 also has this Embodiment a special shape shown in FIG. 15.
  • An eccentric pinion 22 is preferably used, the center of the toothing being offset from the center of rotation. Particularly when the pinion and the axis of rotation are manufactured separately, the pinion is easy and simple to produce, for example on a hobbing machine.
  • the associated special toothing of the rack can be easily created using a broach.
  • the housing base 39 of the basic housing 11 is located at the end facing away from the spring housing. It is advantageously sealed and detachably mounted in particular by means of at least one O-ring. As a result, it can easily be exchanged for another one, especially a different one.
  • the door can also be fixed in another way, for example by means of an electromagnet in the housing base 39, or the like with a hydraulic valve. cooperates.
  • the electromagnet can then be controlled by means of an auxiliary device, for example a smoke detector, and it ensures that when smoke occurs, the door is automatically closed or cannot be held automatically in a wide-open position.
  • the spring housing 12 to 15 preferably each has a cup-shaped shape, with all dimensions, with the exception of the length, preferably being the same.
  • the short spring bonnet 12 is used for a door closer for light doors
  • the somewhat longer spring bonnet 13 is used for doors of medium weight
  • the spring bonnet 14, which is one step longer results in a door closer according to the DIN standard.
  • the one in the drawing longest spring hood 15 can accommodate an even longer spring and it is used, for example, in a door closer for heavy doors and parallel arm linkages as well as the corresponding DIN regulation.
  • a central opening 40 in particular with a circular cross section, which is penetrated by a shaft 41 of a spring adjusting device 19.
  • the right end of the load spring or springs 16, 17 is supported on its axially adjustable spring plate 18.
  • the opening 40 can be closed by means of a plug.

Landscapes

  • Closing And Opening Devices For Wings, And Checks For Wings (AREA)
  • Power-Operated Mechanisms For Wings (AREA)

Claims (3)

1. Ferme-porte comprenant un piston (5) monté déplaçable dans un boîtier contre la force d'au moins un ressort de rappel (16, 17) et un dispositif de transfert d'un fluide hydraulique d'une chambre hydraulique antérieure (27) disposée en deça du piston dans une chambre hydraulique postérieure (28) disposée-au-delà du piston, le boîtier étant réalisé en deux parties et composé d'un boîtier de base (11) recevant tous les canaux, soupapes, dispositifs d'étranglement (31 à 34) et analogues prévus dans le boîtier, ainsi que d'un boîtier à ressort (12 à 15) exempt de canaux d'écoulement et relié étanche au liquide au boîtier de base (11), caractérisé en ce que, avec au moins deux canaux formés dans le corps de base et reliant la chambre hydraulique antérieure (27) à la chambre hydraulique postérieure (28), l'un ou au moins l'un d'eux est un canal susceptible d'être parcouru sélectivement par le fluide ou un canal fermé par un bouchon, un plomb ou un élément semblable.
2. Ferme-porte selon la revendication 1, dont le boîtier comporte des canaux, en particulier sur deux parois mutuellement opposées (35, 36) du boîtier, à chacun desquels est coordonnée au moins une réception pour une vis d'étranglement, un clapet d'étranglement (31 à 34) ou un élément analogue, caractérisé en ce qu'un bouchon de fermeture ou un élément semblable est vissé sélectivement dans l'une ou au moins une des réceptions pour couper le canal coordonné.
3. Ferme-porte selon la revendication 1 ou 2, dont le boîtier est muni, à l'extrémité du boîtier de base (11) éloignée du boîtier à ressort (12 à 15), d'un fond de boîtier (39) encastré de façon étanche, caractérisé en ce que le fond de boîtier (39) est pourvu, au choix, d'une unité de soupape et d'une partie d'au moins un canal d'étranglement du boîtier.
EP89101667A 1988-02-13 1989-02-01 Ferme-porte Expired - Lifetime EP0328934B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8801897U 1988-02-13
DE8801897U DE8801897U1 (de) 1988-02-13 1988-02-13 Türschließer

Publications (2)

Publication Number Publication Date
EP0328934A1 EP0328934A1 (fr) 1989-08-23
EP0328934B1 true EP0328934B1 (fr) 1992-01-02

Family

ID=6820666

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89101667A Expired - Lifetime EP0328934B1 (fr) 1988-02-13 1989-02-01 Ferme-porte

Country Status (4)

Country Link
EP (1) EP0328934B1 (fr)
JP (1) JPH0730652B2 (fr)
DE (2) DE8801897U1 (fr)
ES (1) ES2029084T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1828516B2 (fr) † 2004-12-17 2016-03-09 DORMA Deutschland GmbH Systeme d'entrainement de porte

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2248878B (en) * 1990-10-17 1994-09-07 Jebron Ltd Door closer and method used in making the door closer
KR20020072902A (ko) * 2001-03-13 2002-09-19 주식회사 제일금속 백 체크 밸브를 갖는 도어 클로져의 랙
ATE460551T1 (de) * 2003-05-27 2010-03-15 Geze Gmbh Antrieb für einen dreh- oder kipp-flügel
WO2017061846A1 (fr) * 2015-10-06 2017-04-13 Rodriguez Rodriguez Oscar Système ferme-porte dissimulé

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3852846A (en) * 1972-07-28 1974-12-10 Republic Industries Door hold open attachment for a door check
JPS5812432B2 (ja) * 1973-09-10 1983-03-08 カヤバ工業株式会社 フロアヒンジ
JPS5418499A (en) * 1977-07-12 1979-02-10 Toyo Engineering Corp Condensation and separation of ammonia
DE3161011D1 (en) * 1980-05-20 1983-11-03 Gen Motors Corp Multicylinder swash plate compressor
DE3411189A1 (de) * 1984-03-27 1985-10-10 Dorma-Baubeschlag Gmbh & Co Kg, 5828 Ennepetal Selbsttaetiger tuerschliesser
US4665583A (en) * 1984-09-28 1987-05-19 Emhart Industries, Inc. Door closer piston assembly having separate head portions
JPS62107184A (ja) * 1985-11-02 1987-05-18 美和ロツク工業株式会社 ドアクロ−ザのバツクチエツク装置
JPH0617972Y2 (ja) * 1986-07-09 1994-05-11 ダイハツディ−ゼル機器株式会社 ドアクロ−ザ

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1828516B2 (fr) † 2004-12-17 2016-03-09 DORMA Deutschland GmbH Systeme d'entrainement de porte

Also Published As

Publication number Publication date
DE58900642D1 (en) 1992-02-13
DE8801897U1 (de) 1988-03-24
ES2029084T3 (es) 1992-07-16
JPH0730652B2 (ja) 1995-04-10
EP0328934A1 (fr) 1989-08-23
JPH01247681A (ja) 1989-10-03

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