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:
Jun. 28, 1977
Filed:
Oct. 08, 1976
Applicant:
Inventor:
Thomas R Miller, Waynesburg, PA (US);
Assignee:
Continental Oil Company, Ponca City, OK (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
175107 ; 1510412 ; 175 67 ; 175422 ; 239259 ;
Abstract
A drilling assembly including a jet nozzle bit rotatable on a fluid supply shaft. The assembly includes a bearing housing protected by seals and vent ports to prevent fluid which has leaked between the fluid supply shaft and the jet nozzle bit from contaminating the bearings.