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:
Aug. 21, 1984
Filed:
Jun. 02, 1983
James W Montgomery, Huntsville, TX (US);
Hughes Tool Company, Houston, TX (US);
Abstract
A sandwich shaped piston seal is shown for sealing multiple mandrel well packers. The seal has a plate shaped center portion made of a compliant elastomer material having upper and lower surfaces and an outer rim. The center portion is provided with multiple holes for receiving multiple mandrels with the mandrels being arranged perpendicular to the upper and lower surfaces. A pair of external backup rings circumscribe the outer rim of the elastomeric center portion and a pair of internal backup rings circumscribed the interior surface of each of the mandrel holes. A pair of header plates surround the center portion in sandwich fashion, the plates being provided with multiple holes corresponding to the holes in the center portion for receiving the mandrels. The backup ring design prevents extrusion of the elastomeric sealing portion when pressure acts upon the seal.