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:
Sep. 13, 1977
Filed:
Jun. 15, 1976
Applicant:
Inventor:
James Gordon Sutherland, Kingston, CA;
Assignee:
Alcan Aluminum Corporation, Cleveland, OH (US);
Primary Examiner:
Int. Cl.
CPC ...
E04C / ; E04C / ;
U.S. Cl.
CPC ...
52729 ; 52730 ; 2915 / ;
Abstract
This composite beam structure is built up from at least two relatively rigid members, which may be of extruded aluminum and at least one relatively flexible web, which may be corrugated sheet aluminum. The web connects the relatively rigid members. The web has relatively short pitch, shallow corrugations in its margins to facilitate its connection to the rigid members, and relatively long pitch, deep corrugations between its margins to provide increased stress resistance. A box beam modification uses two relatively rigid members and two corrugated webs.