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:
Apr. 14, 1981
Filed:
Dec. 11, 1978
Applicant:
Inventor:
Thomas R Cassel, Birmingham, MI (US);
Assignee:
Other;
Primary Examiner:
Int. Cl.
CPC ...
F16L / ;
U.S. Cl.
CPC ...
285177 ; 2915 / ; 72392 ; 285419 ; 285420 ;
Abstract
A coupling for a pipe lap joint is disclosed in which a sleeve has a larger diameter at one end and a smaller diameter at the other end with means for stretching the sleeve around the pipes. The sleeve has a radially projecting channel-shaped sector and force applying means engages the sector to stretch the sleeve around the pipes. The channel-shape sector is uniform in cross section along the length of the sleeve and the larger end of the sleeve is axially offset from the smaller end. An improved method for making the pipe coupling is disclosed in which a sleeve blank is disposed in an external die and stretched outwardly by an expanding mandrel.