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:
Dec. 30, 1986
Filed:
May. 17, 1985
Applicant:
Inventors:
Nareshchandra J Kar, Westminster, CA (US);
Cary A Roth, Huntington Beach, CA (US);
Assignee:
Smith International, Inc., Newport Beach, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16J / ; F16C / ; B23P / ;
U.S. Cl.
CPC ...
277-1 ; 277 92 ; 2940202 ; 29724 ; 29DI / ;
Abstract
A belleville seal for a sealed bearing rotary cone rock bit. The inner static ring portion of the annular belleville seal is metal and is interference fitted over the base of a journal bearing. The separation joint formed between the inner diameter of the static ring portion of the belleville seal and the outside diameter of the journal bearing is circumferentially welded using a high-energy beam source to form a hermetically sealed metallurgical bond therebetween.