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1. US4263694 - Door closer

Office United States of America
Application Number 05958988
Application Date 08.11.1978
Publication Number 4263694
Publication Date 28.04.1981
Grant Number 4263694
Grant Date 28.04.1981
Publication Kind A
IPC
E05F 3/04
EFIXED CONSTRUCTIONS
05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
FDEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
3Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
04with liquid piston brakes
E05F 15/20
EFIXED CONSTRUCTIONS
05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
FDEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
15Power-operated mechanisms for wings
20controlled by automatically-acting means, e.g. by photocells, by electric waves, by thermostats, by rain, by fire
A62C 2/12
AHUMAN NECESSITIES
62LIFE-SAVING; FIRE-FIGHTING
CFIRE-FIGHTING
2Fire prevention or containment
06Physical fire-barriers
12Hinged dampers
E05F 3/10
EFIXED CONSTRUCTIONS
05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
FDEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
3Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
04with liquid piston brakes
10with a spring, other than a torsion spring, and a piston, the axes of which are the same or lie in the same direction
E05F 3/12
EFIXED CONSTRUCTIONS
05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
FDEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
3Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
04with liquid piston brakes
12Special devices controlling the circulation of the liquid, e.g. valve arrangement
E05F 3/22
EFIXED CONSTRUCTIONS
05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
FDEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
3Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
22Additional arrangements for closers, e.g. for holding the wing in opened or other position
CPC
E05F 3/102
EFIXED CONSTRUCTIONS
05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
FDEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
3Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
04with liquid piston brakes
10with a spring, other than a torsion spring, and a piston, the axes of which are the same or lie in the same direction
102with rack-and-pinion transmission between driving shaft and piston within the closer housing
A62C 2/12
AHUMAN NECESSITIES
62LIFE-SAVING; FIRE-FIGHTING
CFIRE-FIGHTING
2Fire prevention or containment
06Physical fire-barriers
12Hinged dampers
E05F 3/223
EFIXED CONSTRUCTIONS
05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
FDEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
3Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
22Additional arrangements for closers, e.g. for holding the wing in opened or other position
223Hydraulic power-locks, e.g. with electrically operated hydraulic valves
E05F 2003/228
EFIXED CONSTRUCTIONS
05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
FDEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
3Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
22Additional arrangements for closers, e.g. for holding the wing in opened or other position
228Arrangements where the end of the closer arm is sliding in a track
E05Y 2201/256
EFIXED CONSTRUCTIONS
05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
YINDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
2201Constructional elements; Accessories therefore
20Brakes; Disengaging means, e.g. clutches; Holders, e.g. locks; Stops; Accessories therefore
252characterised by type of friction
254Fluid or viscous friction
256with pistons or vanes
E05Y 2201/264
EFIXED CONSTRUCTIONS
05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
YINDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
2201Constructional elements; Accessories therefore
20Brakes; Disengaging means, e.g. clutches; Holders, e.g. locks; Stops; Accessories therefore
262characterised by type of motion
264linear
Applicants Dorma-Baubeschlag GmbH & Co. KG
Inventors Jentsch Dietrich
Agents Striker Michael J.
Priority Data 2751859 21.11.1977 DE
Title
(EN) Door closer
Abstract
(EN)

A hydraulically controlled door closer in which a spring cooperating with a piston reciprocatable in a fluid filled bore urges a closer shaft operatively connected to the piston to a position in which a door connected to the closer shaft is closer. The spring is tensioned during turning of the closer shaft in a door opening direction and may be releasably held in the tensioned condition by an additional piston located between one end of the spring and the first-mentioned piston and provided with a first passage therethrough in which a one-way valve is located in a second passage which may be closed and opened by an electromagnetically operated valve.

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