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. 29, 2015
Filed:
Nov. 15, 2013
Larry Rayner Russell, Houston, TX (US);
Larry Rayner Russell, Houston, TX (US);
Other;
Abstract
A selectably operable passive gripping device for gripping tubular materials has an elastomeric element which is provided with integrally bonded segmented end rings to prevent the extrusion of the elastomer when it is subjected to high compressive loads. The elastomeric element is molded so that its as-molded gripping surface interferes with the surface of tubular objects to be gripped. The elastomeric gripping element is mounted and supported by a structural element or housing and allows axial flow communication through the gripped tubular objects. The gripping device is used to lift tubular objects such as a tubular string used in oil field applications.