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:
Aug. 01, 2023
Filed:
Aug. 25, 2022
Applicant:
Masonite Corporation, Tampa, FL (US);
Inventors:
Benjamin W. Docksteader, Custer, WA (US);
Joel Sellinger, Blaine, WA (US);
Assignee:
Masonite Corporation, Tampa, FL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E05F 15/72 (2015.01); E05F 1/12 (2006.01); G08B 3/10 (2006.01);
U.S. Cl.
CPC ...
E05F 15/72 (2015.01); E05F 1/12 (2013.01); G08B 3/10 (2013.01); E05Y 2201/41 (2013.01); E05Y 2201/434 (2013.01); E05Y 2201/462 (2013.01); E05Y 2201/474 (2013.01); E05Y 2201/484 (2013.01); E05Y 2201/618 (2013.01); E05Y 2201/638 (2013.01); E05Y 2201/654 (2013.01); E05Y 2201/668 (2013.01); E05Y 2201/722 (2013.01); E05Y 2400/612 (2013.01); E05Y 2400/66 (2013.01); E05Y 2600/46 (2013.01); E05Y 2900/132 (2013.01); E05Y 2900/134 (2013.01);
Abstract
An emergency door closing device that can be installed upon existing doors and hinges to automatically close doors in the response to smoke and fire. The improvements incorporated therein include a hinge cam pivot member that attaches to an existing hinge member of a door and produces a moment force about the existing hinge member allowing a reduced force necessary to pivot the door into a closed position. Further, a novel spring, cam, and lever system is incorporated to activate the moment force to close the door.