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. 10, 1996
Filed:
Jul. 18, 1994
Applicant:
Inventor:
Wu-Hsiung E Hsu, Ottawa, CA;
Assignee:
Forintek Canada Corp., Vancouver, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E04C / ;
U.S. Cl.
CPC ...
527364 ; 527307 ; 527375 ; 527381 ; 52170 ;
Abstract
The service life of wooden poles such as utility poles is increased by forming the butt end portion thereof with slots that penetrate deeply into the wood, these slots being formed prior to pressure treatment of the wood with preservatives and thus improving the penetration of the preservatives into the wood. After drying, the butt end of the pole is encased in a shell, suitably of polymers, that is bonded to the butt of the pole and presents a barrier to the penetration of fungus or insects, and likewise prevents the passage of liquids which might leach preservative from the pole into the surrounding ground.