GB1250621A - - Google Patents

Info

Publication number
GB1250621A
GB1250621A GB1250621DA GB1250621A GB 1250621 A GB1250621 A GB 1250621A GB 1250621D A GB1250621D A GB 1250621DA GB 1250621 A GB1250621 A GB 1250621A
Authority
GB
United Kingdom
Prior art keywords
door
piston
plates
cam
pistons
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
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 filed Critical
Publication of GB1250621A publication Critical patent/GB1250621A/en
Expired legal-status Critical Current

Links

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
    • E05F3/12—Special devices controlling the circulation of the liquid, e.g. valve arrangement
    • 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
    • E05F3/104—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 cam-and-slide transmission between driving shaft and piston within the closer housing
    • 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
    • E05Y2800/21—Combinations of elements of identical elements, e.g. of identical compression springs
    • 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

Landscapes

  • Closing And Opening Devices For Wings, And Checks For Wings (AREA)

Abstract

1,250,621. Door closer device with back check. DOR-O-MATIC (G.B.) Ltd. 25 Oct.; 1968 [3 Nov., 1967; 1 Feb., 1968], Nos. 50057/67 and 5203/68. Heading E2M. [Also in Division F2] A door closer device of the usual type as shown, wherein main pistons 34 and 36 operate in parallel cylindrical bores 38 and 40 against the action or springs 42 and 44 and are connected to a pair of plates 20 and 22 slidable in a cavity 26 in the housing 10, which plates carry between them roller followers 16, 17, 18 bearing on a cam 14 secured to a shaft acting on the door, is provided' with at least one auxiliary piston and cylinder device which provides an increasing resistance to the opening of the door. Preferably there are two auxiliary pistons 74 and 76 operating in cylinders 70 and 72 against the action of springs 78, the piston heads abutting the adjacent end of the pair of slidable plates 20 and 22. A tapered flat 80 is formed on the surface of each piston 74 and 76, such that the flat is deepest at the end of the piston further from the plates 20, 22 and runs out part way along the piston. As the door is opened in either direction the cam 14 rotates to move the slidable plates 20 and 22 which thrust the pistons 74 and 76 into their cylinders, progressively reducing in cross-section the passages formed by the flats 80 until the passages are completely closed. This action produces an increasing resistance to motion until the door is prevented from opening further. Details of construction and manufacture are given; the door closer is suitable for being sunk in the floor or door frame. The cam 14 may have recesses 46, 48 to engage rollers 16 or 18 to hold the door open.
GB1250621D 1967-11-03 1967-11-03 Expired GB1250621A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5005767 1967-11-03

Publications (1)

Publication Number Publication Date
GB1250621A true GB1250621A (en) 1971-10-20

Family

ID=10454482

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1250621D Expired GB1250621A (en) 1967-11-03 1967-11-03

Country Status (1)

Country Link
GB (1) GB1250621A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2268540A (en) * 1992-07-10 1994-01-12 Dorma Gmbh & Co Kg Door closer
US5417013A (en) * 1992-07-10 1995-05-23 Dorma Gmbh + Co. Kg Overhead door closer with slide rail for concealed installation in door panels or door frames
DE10031403A1 (en) * 2000-07-04 2002-01-24 Dorma Gmbh & Co Kg Top door closer shaft has swivel arm, slide piece movable on slide rail, housing containing damping pistons, spring supports, spring assemblies, cam plates, valve units and pressure rollers
DE10031785A1 (en) * 2000-07-04 2002-01-24 Dorma Gmbh & Co Kg Door closer has slide rail arrangement, shaft with cam plate, combined housing including damper, axle and spring housings, pistons and spring assemblies
GB2433296A (en) * 2005-12-12 2007-06-20 Levasseur Systems Sa Door operator comprising resilient actuator and damping means operated by separate cams
CN106223759A (en) * 2016-09-13 2016-12-14 佛山市奥达金属制品有限公司 Multipoint positioning cam
EP3431688A1 (en) * 2017-07-18 2019-01-23 Arctek Industrial Co., Ltd. Door closer

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2268540A (en) * 1992-07-10 1994-01-12 Dorma Gmbh & Co Kg Door closer
US5417013A (en) * 1992-07-10 1995-05-23 Dorma Gmbh + Co. Kg Overhead door closer with slide rail for concealed installation in door panels or door frames
GB2268540B (en) * 1992-07-10 1996-05-01 Dorma Gmbh & Co Kg Top mounting door closer with slide bar linkage for concealed fitting in door leaves or door frames
DE10031403A1 (en) * 2000-07-04 2002-01-24 Dorma Gmbh & Co Kg Top door closer shaft has swivel arm, slide piece movable on slide rail, housing containing damping pistons, spring supports, spring assemblies, cam plates, valve units and pressure rollers
DE10031785A1 (en) * 2000-07-04 2002-01-24 Dorma Gmbh & Co Kg Door closer has slide rail arrangement, shaft with cam plate, combined housing including damper, axle and spring housings, pistons and spring assemblies
DE10031785C2 (en) * 2000-07-04 2002-05-02 Dorma Gmbh & Co Kg Overhead door closer with a slide rail arrangement
DE10031403C2 (en) * 2000-07-04 2002-05-23 Dorma Gmbh & Co Kg Overhead door closer with a slide rail arrangement
GB2433296A (en) * 2005-12-12 2007-06-20 Levasseur Systems Sa Door operator comprising resilient actuator and damping means operated by separate cams
GB2433296B (en) * 2005-12-12 2008-02-20 Levasseur Systems Sa Device for opening and closing a leaf of a swing type door
CN106223759A (en) * 2016-09-13 2016-12-14 佛山市奥达金属制品有限公司 Multipoint positioning cam
EP3431688A1 (en) * 2017-07-18 2019-01-23 Arctek Industrial Co., Ltd. Door closer
CN109267865A (en) * 2017-07-18 2019-01-25 朕豪工业股份有限公司 Door closer
US10428569B2 (en) 2017-07-18 2019-10-01 Arctek Industrial Co., Ltd. Door closer

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Legal Events

Date Code Title Description
PS Patent sealed
PLE Entries relating assignments, transmissions, licences in the register of patents
PCNP Patent ceased through non-payment of renewal fee