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. 11, 1990
Filed:
Nov. 17, 1988
Applicant:
Inventors:
Charles Hall, West Chester, OH (US);
Michael Fry, Cincinnati, OH (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F28F / ; F16L / ;
U.S. Cl.
CPC ...
165 76 ; 29447 ; 138 89 ; 138 97 ;
Abstract
A plug member adapted for insertion into a tube end seals about its periphery in response to a predetermined activation to prevent fluid flow through the tube. In one embodiment, the plug contains annular rings that expand radially outwardly in response to thermal excitation. In an alternate embodiment, a welding material is forced about the plug periphery to seal with the interior surface of a tube in response to a predetermined activation.