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:
Apr. 07, 1981
Filed:
Nov. 26, 1979
Applicant:
Inventor:
Fred K Fox, Austin, TX (US);
Assignee:
Engineering Enterprises, Inc., Houston, TX (US);
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
175107 ; 175228 ; 415104 ; 415113 ; 415502 ;
Abstract
There is disclosed a turbodrill having an axial thrust bearing section which is contained within a lubricant chamber arranged within an annular space between the case and shaft of the turbodrill above the turbine section, and which is defined between means sealing between the shaft and the case which, in use of the turbodrill, are above the drilling fluid circulating therethrough.