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:
May. 24, 1988
Filed:
May. 30, 1986
Applicant:
Inventors:
Kevin B O'Sullivan, Boise, ID (US);
Arthur L Troutner, Boise, ID (US);
Assignee:
Trus Joist Corporation, Boise, ID (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E04B / ; E04C / ;
U.S. Cl.
CPC ...
5222 / ; 52 86 ; 52227 ; 52720 ; 52730 ;
Abstract
The invention comprises an improved structural support member, and method for making the same, having bonded wood beam members which are prestressed during the bonding process. The prestressing is such that significant stresses are induced in an outer surface in at least one of the beam members and at least partially retained by the cured bond. The stresses are such that a significant compression prestress is induced at the bottom surface of the structural support whereby it is capable of carrying a much greater load represented by the compression prestress at the bottom surface.