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:
May. 04, 2010
Filed:
Jul. 12, 2006
Anton Zahradnik, Sugarland, TX (US);
Gregory L. Ricks, Spring, TX (US);
Gregory W. Peterson, Fort Worth, TX (US);
Don Quy Nguyen, Houston, TX (US);
Chih C. Lin, Spring, TX (US);
Terry J. Koltermann, The Woodlands, TX (US);
Anton Zahradnik, Sugarland, TX (US);
Gregory L. Ricks, Spring, TX (US);
Gregory W. Peterson, Fort Worth, TX (US);
Don Quy Nguyen, Houston, TX (US);
Chih C. Lin, Spring, TX (US);
Terry J. Koltermann, The Woodlands, TX (US);
Baker Hughes Incorporated, Houston, TX (US);
Abstract
An elastomeric seal ring is located between each bearing pin and each cone of an earth-boring bit. An excluder ring or band is imbedded within the inner diameter of the seal ring. A portion of the inner diameter of the seal ring as well as the excluder ring are in dynamic sealing contact with the bearing pin. The excluder ring may be harder and more wear resistant than the seal ring. The excluder ring may have lubricating properties. An outer excluder ring may be located on the outer diameter of the seal ring for engaging the cone to resist rotation.