Title:
AUTOMATIC DOOR CLOSER
Document Type and Number:
Japanese Patent JPS563777
Kind Code:
A
Abstract:
An automatic door closer in which a piston operatively connected to the door to be moved in axial direction during turning of the door in either direction from a closed to an open position divides the fluid filled housing of the door closer into two pressure compartments which are connected by two channels in which adjustable throttles are arranged to dampen the movement of the door or to be completely closed to prevent passage of fluid through the channels to hold the door in any open position.
Inventors:
HORUSUTO TEIRUMAN
Application Number:
JP8032980A
Publication Date:
January 16, 1981
Filing Date:
June 16, 1980
Export Citation:
Assignee:
DORMA BAUBESCHLAG
International Classes:
E05F3/10; E05F3/12; (IPC1-7): E05F3/12
Next Patent: TELEPHONE SET