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:
Feb. 15, 1994
Filed:
Sep. 28, 1992
Lawrence A Eckert, Houston, TX (US);
Carl F Boehm, Jr, Houston, TX (US);
ABB Vetco Gray Inc., Houston, TX (US);
Abstract
A casing hanger seal has facilities to enable periodic testing from the exterior of the wellhead housing. The casing hanger seal has inner and outer walls separated by a cavity. An energizing member moves downward to force the inner and outer walls into engagement with the casing hanger and bore of the wellhead housing. Test passages extend through the inner and outer walls, energizing member, and wellhead housing. The test passages divide the seal member into primary and secondary seal areas. Applications of test fluid, from the exterior, to the test passages determines whether a leak is present.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile