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. 05, 1993
Filed:
May. 08, 1992
Applicant:
Inventors:
Uvon Skipper, Bellaire, TX (US);
James W Ward, Mena, AR (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
166 98 ; 166187 ; 294 8632 ; 2941193 ;
Abstract
A fluid operated overshot with an outer metal mandrel internally supports a resilient internal sleeve. The sleeve telescopes over a fish to grip the fish on expanding radially inwardly. This expansion is fluid powered by applying a force to the inner sleeve to expand inwardly from a piston which compresses the sleeve, or form surrounding the inner sleeve in a concentric fluid receiving cavity.