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:
Nov. 23, 2010
Filed:
Oct. 13, 2006
Applicant:
Gary Johnston, Scotland, GB;
Inventor:
Gary Johnston, Scotland, GB;
Assignee:
Weatherford/Lamb, Inc., Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B21D 3/02 (2006.01); B21D 37/00 (2006.01); B21B 45/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
An expansion member for a rotary expansion tool comprises a spindle adapted to be supported at both ends, and a roller mounted concentrically on the spindle. A sealed lubrication system is contained within the spindle for supplying lubricant to a bearing or bearing surface at an interface between the spindle and the roller.