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:
Oct. 19, 2010
Filed:
Jun. 24, 2003
Applicant:
Thomas Salutzki, Witten, DE;
Inventor:
Thomas Salutzki, Witten, DE;
Assignee:
Dorma GmbH + Co. KG, Ennepetal, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16F 9/00 (2006.01); E05F 3/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
A drive device for opening or closing a leaf of a door, a window or similar includes a housing and a closing spring, which is located in the housing and acts upon a piston, the latter co-operating with a closing shaft in the housing by means of gearing, The piston and housing are made of injection molded polyoxymethylene plastic (POM).