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:
Nov. 10, 2015
Filed:
Nov. 14, 2012
Applicants:
Thomas Salutzki, Witten, DE;
Alexander Hellwig, Ennepetal, DE;
Jan Meulenbeld, Breckerfeld, DE;
Inventors:
Assignee:
Dorma GmbH + Co. KG, Ennepetal, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E05F 3/12 (2006.01); E05F 3/10 (2006.01); E05F 3/04 (2006.01); E05F 3/22 (2006.01);
U.S. Cl.
CPC ...
E05F 3/12 (2013.01); E05F 3/04 (2013.01); E05F 3/104 (2013.01); E05F 3/227 (2013.01); E05Y 2900/132 (2013.01); Y10T 16/2777 (2015.01);
Abstract
A door operator for operating a door includes a housing, an output shaft with a cam disc, an opening piston guided in the housing, which piston, on a first side, bears against the cam disc, an energy accumulator acting upon the opening piston for storing a closing energy for the door, and a damping piston guided in a cylindrically shaped hollow space of a cylinder element, and which piston, on a second side, bears against the cam disc, wherein the cylinder element is firmly connected to the opening piston.