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. 24, 1998
Filed:
Sep. 12, 1996
Applicant:
Inventors:
Daniel C Ziegler, Millersville, PA (US);
William J Platt, Aston, PA (US);
Assignee:
Worthington Armstrong Venture, Malvern, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04C / ;
U.S. Cl.
CPC ...
5250607 ; 52667 ; 403347 ;
Abstract
A grid framework for a suspended ceiling wherein reinforced cross members are allowed to expand; without collapsing or buckling, during a fire. Clips at the end of the members create barriers that are successfully overcome, in stages, to relieve any excess longitudinal compressive forces capable of being built up by the reinforced members.