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:
Jan. 10, 1978
Filed:
Feb. 28, 1977
Applicant:
Inventor:
Horst Tillmann, Ennepetal, DT;
Assignee:
Dorma-Baubeschlag G.m.b.H. & Co. K. G., Ennepetal-Voerde, DT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E05F / ;
U.S. Cl.
CPC ...
16 80 ; 16 51 ; 16 82 ; 16 84 ;
Abstract
An automatic door closer includes a closer shaft to which the door to be closed is connected for turning movement therewith about the axis thereof, and spring means biasing said closure shaft to a position in which the door is closed. The door closer includes further means for releasably holding the closer shaft and the door connected thereto in any adjusted position when the door is opened beyond a predetermined angle.