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:
Dec. 29, 1987
Filed:
Jan. 06, 1986
Lionel L Brightwell, Boise, ID (US);
Trus Joist Corporation, Boise, ID (US);
Abstract
A wooden joist is described which includes a pair of flange members each having a tapered groove therein and a web member with two tapered outer edges that are glued into such grooves. The tapered outer edges are formed by cutting with a rotating cutter head to provide such edges of substantially uncompressed wood. Glue vent slots are provided at positions spaced along the length of such edges to allow glue to escape from the grooves by flowing through such vent slots. The vent slots are cut to a uniform depth into the sides of the tapered edges by feeding the web member between two pairs of cutting wheels each having raised cutter projections spaced along the surface of the wheel and extending at the same angle as the sides of the tapered edges. Preferably, the web member is made of oriented strand board, while the flange members may be made of laminated veneer lumber.