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:
Sep. 20, 2011
Filed:
Oct. 30, 2006
Sudarsanam Chellappa, Houston, TX (US);
Zhou Yong, Spring, TX (US);
Sudarsanam Chellappa, Houston, TX (US);
Zhou Yong, Spring, TX (US);
Smith International, Inc., Houston, TX (US);
Abstract
A seal assembly for sealing between a journal shaft and a rotating cone cutter of a drill bit. In an embodiment, the seal assembly comprises a seal gland positioned between the journal shaft and the cone cutter. In addition, the seal assembly comprises an annular seal body disposed about the journal shaft within an annular recess. The seal body comprises a dynamic sealing surface at its outer diameter Dthat forms a dynamic seal with the sealing surface of the recess and a static sealing surface at its inner diameter Dthat forms a static seal with an outer bearing surface of the journal shaft.