The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 08, 1986
Filed:
Nov. 28, 1983
Applicant:
Inventor:
Giselher Sieg, Ratingen, DE;
Assignee:
Dorma-Baubeschlag GmbH & Co. KG, Ennepetal, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E05F / ;
U.S. Cl.
CPC ...
49336 ; 49137 ; 16 49 ; 16 58 ;
Abstract
In a door lock comprised of an elongated housing in which a piston loaded with a spring is displaceable in two opposite axial directions, a rotatable locking shaft connected to the door wing and provided with a pinion engaged with a rack formed on that piston, the spring is prestressed in the direction of the closing of the door. The spring acts on a displaceable supporting member which displaces the piston in the housing of the lock. An electromotor actuated by a control unit is operated to displace the supporting member.