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:
Aug. 09, 1977
Filed:
Sep. 07, 1976
Applicant:
Inventor:
Wilbur S Keller, Arlington, TX (US);
Assignee:
Dresser Industries, Inc., Dallas, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16C / ;
U.S. Cl.
CPC ...
308-82 ; 308174 ;
Abstract
Galling in the ball bearing raceway of a rotary rock bit is reduced even when the thrust bearings of the rock bit have worn to the point that the ball bearings are loaded by out thrust. The radius of the ball bearing raceway in the bearing pin and/or the cutter includes an inlay of anti-galling material. The anti-galling material insures that any material worn from the raceway will not harm the other bearing elements.
Keller, Wilbur. (1977). Rock bit having a ball bearing raceway with anti-galling material (U.S. Patent No. 4040680). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4040680
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile