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:
Feb. 10, 2004
Filed:
Dec. 12, 2001
Applicant:
Inventors:
William W. Holmes, IV, Birmingham, AL (US);
Daniel A. Copeland, Bessemer, AL (US);
Assignee:
U.S. Pipe and Foundry Company, Birmingham, AL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16L 2/108 ; F16J 1/512 ;
U.S. Cl.
CPC ...
F16L 2/108 ; F16J 1/512 ;
Abstract
A locking segment for use in connecting two lengths of pipe has a radically extending heel that serves as a rotational brake. By mating the brake into an annular trough, that is, by placing it between two walls, the rotation of the segment can continue only until points on the brake mure between the two walls. Rotation of the segment in response to increasing thrust pressures can thereby be arrested before the rotation causes the segment to bear on the spigot with a radically inward force great enough to penetrate the spigot.