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:
Jan. 29, 1980
Filed:
Nov. 17, 1978
Applicant:
Inventors:
William Baker, III, Costa Mesa, CA (US);
Joe W Vincent, Balboa Island, CA (US);
Assignee:
Smith International, Inc., Newport Beach, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
175340 ; 175 67 ; 239589 ;
Abstract
This invention teaches the use of cavitation inducing nozzles in combination with rock bits. The cavitation nozzles enhance the drilling rate by creating catastrophic implosion waves which erode solid material at the bottom of the hole while reducing the localized pressure at the rock tooth interface. Localized pressure reduction reduces the tendency for the cuttings to adhere to the bottom of the hole due to differential pressure.