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. 13, 1988
Filed:
Dec. 28, 1987
Richard W Slyker, Houston, TX (US);
Vetco Gray Inc., Houston, TX (US);
Abstract
A packoff assembly for sealing between a casing hanger and a wellhead for a subsea well uses a tapered wedge. The tapered wedge locates between inner and outer seal rings formed of metal. When moved downward, the wedge member pushes the seal rings outward to form a metal seal. The seal rings are formed separate from and carried on a base member. The wedge member extends down into a cavity in the base member. Pins connect the wedge member to the base member to retain the seal ring, but allow longitudinal movement of the wedge movement relative to the base member. An elastomeric seal locates between the upper ends of the seal rings and a drive member which moves the wedge member downward.