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:
Feb. 14, 2023
Filed:
May. 18, 2021
Applicant:
Dormakaba Deutschland Gmbh, Ennepetal, DE;
Inventors:
Assignee:
DORMAKABA DEUTSCHLAND GMBH, Ennepetal, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E05F 15/49 (2015.01); E05F 1/00 (2006.01); E05F 15/50 (2015.01);
U.S. Cl.
CPC ...
E05F 15/49 (2015.01); E05F 1/006 (2013.01); E05F 15/50 (2015.01); E05Y 2201/11 (2013.01); E05Y 2800/252 (2013.01); E05Y 2900/132 (2013.01);
Abstract
A door actuator for opening and/or closing a door, includes a fluid housing with an inner compartment, which is filled with fluid, in particular hydraulic oil, a fluid housing opening in the fluid housing for draining the fluid at thermal overload, a thermally activatable valve for opening, which closes the fluid housing opening, and a collecting device, which is disposed outside the fluid housing opposite the fluid housing opening, forms a collecting space for the fluid, is open towards the fluid housing opening, and includes at least one drain opening for draining the fluid from the collecting space.