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:
Jun. 18, 1985
Filed:
Apr. 26, 1984
Gerhard Heidemann, Celle, DE;
Norton Christensen, Inc., Salt Lake City, UT (US);
Abstract
A high-pressure sealing means for two parts of deep-well drilling tools which are longitudinally movable in relation to one another consists of a wearing sealing ring (7) which is disposed in an annular groove in a first part (1) and bears against the second part (2) and prestressed radially by a pressure ring (14). The wearing sealing ring (7) has a wall surface (13) extending substantially over its axial length, which seals against the second part (2). Moreover the ring (13) is smaller than the width of the annular groove (3) of the first part (1) receiving it and is displaceable between the two sides (4,5) of the annular groove for the selective formation of a static sealing surface at one of the sides (4,5) of the annular groove. The pressure ring (14) is formed from elastomer material, has a large volume, and is gripped, compressed and deformed between the wall surface (10) of the wearing sealing ring (7) situated opposite the sealing wall surface (13) and the bottom (6) of the annular groove.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile