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:
Jul. 02, 1985
Filed:
Feb. 15, 1983
Thomas E Burkley, Akron, OH (US);
Harry T Kifor, Canton, OH (US);
The Goodyear Tire & Rubber Company, Akron, OH (US);
Abstract
A fluid inflatable plug for interiorly cylindrical conduits includes a rigid cylindrical mandrel having an elastomeric tubular sleeve about the outer curved surface of the mandrel. The sleeve includes reinforcements which extend in opposite sense helical paths throughout the longitudinal extent of the sleeve. The sleeve is folded back over one of its ends to form a loop region upon assembly to the mandrel. The ends of the sleeve are sealingly retained to the outer surface of the mandrel. A passage are provided for admitting and exhausting pressurized fluid between the sleeve and the outer curved surface of the mandrel. The plug may include a fluid passage therethrough independent of the passage for admitting an exhausting pressurized fluid between the sleeve and the surface of the mandrel.