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:
May. 01, 1979
Filed:
Jun. 21, 1977
Cameron Iron Works, Inc., Houston, TX (US);
Abstract
A casing hanger for supporting a casing from a casing head within a well bore having a split ring with sealing means attached thereto, a plurality of gripping assemblies supported from the split ring and each of said assemblies including a body with an inwardly facing recess and an exterior surface which tapers downward and inward, to seat in the casing head bowl a plurality of gripping dogs having a generally horizontal gripping edge extending radially inward from the body, and a deformable backing positioned within the space between the outer edge of said dogs and the body recess, the backing partially filling the space behind the dogs and having space into which the backing may move on deformation, the backing providing varying areas in support of each gripping dog and being relatively yieldable.