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:
Nov. 06, 2012
Filed:
Jun. 17, 2008
Applicant:
Michael Chain Keel, Birmingham, AL (US);
Inventor:
Michael Chain Keel, Birmingham, AL (US);
Assignee:
McWane Global, Birmingham, AL (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16L 25/14 (2006.01); E04C 3/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A metal utility pole including a hollow, centrifugally cast, ductile iron utility pole member having a tapered exterior and variable wall thickness for providing a shortened press-fit, slip joint between interconnected pole members. The shortened joint length requires less metal than conventional press-fit, slip joints while maintaining or improving the overall strength of the joint. This is accomplished by increasing the wall thickness of one or both interconnected pole members along the joint relative to the wall thickness of the body or mid-section of the pole members.