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:
Mar. 24, 1981
Filed:
Dec. 28, 1978
Applicant:
Inventor:
David F Mieyal, Strongsville, OH (US);
Assignee:
Donn Incorporated, Westlake, OH (US);
Primary Examiner:
Int. Cl.
CPC ...
E04B / ;
U.S. Cl.
CPC ...
52573 ; 52669 ; 52726 ; 52DI / ;
Abstract
A channel structure for assembly into a suspended ceiling or the like and which is arranged to maintain the structural integrity of the ceiling during exposure to the heat of a fire. The channel structure includes an end splice arrangement having elements which develop a telescoping relationship between joined channels and thereby avoid buckling during thermally induced axial expansion of the channels.