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:
Oct. 18, 1994
Filed:
Apr. 02, 1993
James A Gariepy, Houston, TX (US);
Lawrence A Eckert, Houston, TX (US);
ABB Vetco Gray Inc., Houston, TX (US);
Abstract
A casing hanger seal assembly utilizes a deformable metal body and elastomeric seal rings which are O-rings. The seal rings are located in grooves in unbonded condition in the metal body. The inner wall of the metal body is tapered, matching the taper on the exterior of the casing hanger. The inner wall is sized so that it will be deformed outward as the body of the seal assembly is moved further downward. This causes the seal rings on the outer diameter of the body to engage the wellhead housing inner cylindrical wall. In a second version, the seal ring on the outer wall of the body is initially fully recessed. A deformable rib is located inward from the base of the groove. The rib presses the base of the groove outward.