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. 15, 2013
Filed:
Dec. 15, 2008
Applicant:
David Alexander Trevas, Houston, TX (US);
Inventor:
David Alexander Trevas, Houston, TX (US);
Assignee:
Hydril USA Manufacturing LLC, Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 33/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
A packing unit to seal a wellbore, the packing unit including at least one rotatable cam having a cam axis disposed about an axis of the wellbore, wherein the at least one rotatable cam is rotatable about the cam axis, the at least one rotatable cam comprising a seal recess formed in an outer periphery of the at least one rotatable cam, wherein the packing unit sealingly engages a tool in the wellbore by rotation of the at least one rotatable cam, bringing the seal recess into sealing contact with the tool.