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:
Jan. 13, 1998
Filed:
Jun. 20, 1996
Applicant:
Inventor:
Samuel P Hawkins, III, Mineral Wells, TX (US);
Assignee:
Frank's International, Inc., Houston, TX (US);
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
166208 ; 166217 ;
Abstract
An apparatus for engagement of cylindrical members about the outside diameter, so that downhole tools may be positioned longitudinally along said cylindrical member. A generally cylindrical outer ring is detachably engaged with a generally cylindrical inner ring. Once the inner ring is detached from the outer ring it is automatically present into position by a spring clamping force exerted between the pipe and inner ring. Relative axial motion of the outer ring with respect to the inner ring automatically energizes the inner ring inward providing the high clamping force required to set the self energizing stop collar in its final position.