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. 28, 1984
Filed:
Sep. 15, 1982
Gene A Hemmerling, Richmond, IN (US);
American Metal Door Company, Inc., Richmond, IN (US);
Abstract
A fire door assembly for automatically closing an opening in a wall in response to a predetermined condition has two or more door panels, a connection system for connecting a side edge of one of the door panels to an adjacent side edge of the other door panel in an edge-to-edge relationship, and flame break barriers interposed between the side edges of the panels and the connection system to provide a flame-resistant barrier between the core of each panel and the connection system. Tie bars are secured to the top and bottom edges of the panels to reinforce the edge-to-edge connection. A support system for the door has a track that is free from all external interference to allow free passage of suitably configured rollers.