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:
Jun. 29, 1976
Filed:
Aug. 01, 1974
Gale E Sauer, Williamsville, NY (US);
Roblin Hope's Industries, Inc., Buffalo, NY (US);
Abstract
A fire rated grid-member having fixed end points and the web thereof absorbing thermally induced longitudinally compression which results from fixed end point reaction forces. The grid member further includes a bead surmounting the web which is deformed to create a plurality of weakened portions which deform further upon grid member compression to thereby absorb longitudinal compression in the bead. Each deformed portion of the bead comprises opposing portions of the bead sides being crimped together to form a plane of abutment which is obliquely disposed to a limited extent with respect to the longitudinal axis of the bead. Such a disposition of the plane of abutment minimizes the reduction in compressive strength of the bead while assuring that deformation of the bead will occur in a desired manner during thermally induced compression of the grid member so as to maintain a supported grid network in position.