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. 23, 2008
Filed:
Aug. 05, 1999
Oran D. Tarlton, League City, TX (US);
Oran D. Tarlton, League City, TX (US);
Oil States Industries, Inc., Arlington, TX (US);
Abstract
A composite metal seal includes core of relatively hard metal, and at least one annular region of relatively soft metal. The annular region of relatively soft metal is integrally bonded with the core of relatively hard metal, and has an annular sealing surface for providing a fluid pressure seal. Such a composite metal seal can be manufactured by welding an overlay of the relatively soft metal onto a workpiece of the relatively hard metal; and machining the overlay of the relatively soft metal to form the annular sealing surface. In a preferred construction, the seal is a ring including two annular regions of the relatively soft metal, which provide tapered annular sealing surfaces for engaging respective sealing surfaces of two mating hubs. Such a seal ring can be used in a subsea collet-actuated pipeline connector to permit a metal-to-metal seal connection to be made and broken a number of times.