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:
Apr. 02, 2002
Filed:
Jun. 02, 2000
Applicant:
Inventors:
Burt A. Adams, Berwick, LA (US);
William C. Shafer, Berwick, LA (US);
Norman A. Henry, Mandeville, LA (US);
Assignee:
Oil & Gas Rental Services, Inc., Amelia, LA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 1/906 ; E21B 1/907 ; E21B 1/916 ; E21B 1/918 ; E21B 3/3035 ;
U.S. Cl.
CPC ...
E21B 1/906 ; E21B 1/907 ; E21B 1/916 ; E21B 1/918 ; E21B 3/3035 ;
Abstract
A drill pipe handling apparatus for oil and gas drilling rigs, the drill pipe having an enlarged diameter section positioned between the ends of the drill pipe. The enlarged diameter section of drill pipe has a shoulder which corresponds with and is engaged by a shoulder located on wedge members of lower and upper holders on a drilling rig for supporting the drill pipe without damaging it during and after addition or removal of joints of drill pipe.