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. 08, 2003
Filed:
Sep. 11, 1999
Applicant:
Inventor:
Edwin A. Anderson, Houston, TX (US);
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 3/100 ; E21B 1/702 ;
U.S. Cl.
CPC ...
E21B 3/100 ; E21B 1/702 ;
Abstract
A torque shock absorber apparatus ( ) comprised of a mandrel ( ) and cylinder ( ) with torque absorbing mechanism ( ) to absorb excessive torque while permitting the transmission of rotational energy to the drill string is connected in the drill string or as the drive mechanism in a jar or accelerator ( ) to prevent excessive torque loading of the drill string.