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. 13, 1993
Filed:
Feb. 28, 1992
John W Burkit, Kempton, PA (US);
Other;
Abstract
This invention is directed to the combination of a pair of aligned tubular members joined in end-to-end relationship by an internal expansion coupling device, where such coupling device offers thrust restraint to the combination. Each of the tubular members is characterized by the end thereof having one or more circumferentially disposed recesses about its wall. The coupling device, which cooperates with said recesses comprises an elongated open ended tubular joint member formed from at least one relatively rigid, rectangular sheet-like member, where said member is defined by a pair of opposing sheet ends with a pair of opposing sheet sides. The sheet ends thereof overlap such that the end portions lie contiguous with each other. A continuous circumferential gasket sealing sleeve, formed of an elastomeric material, is provided to overlap each sheet side about each open end of the tubular joint member, where the gasket sealing sleeve is adapted to lie adjacent to and be compressed against the inside wall of the tubular member. Further, means accessible externally thereof are found for expanding the sheet-like member, whereby the sheet ends move circumferentially towards one anther and the extending sheet-like member uniformly urges the elastomeric gasket sealing sleeve against the inside walls of the tubular member thereabout. Finally, means associated with the tubular joint member are provided to engage the one or more circumferentially disposed recesses about the wall of each said aligned tubular member to provide thrust restraint to the combination.