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:
May. 07, 1985
Filed:
Jan. 29, 1982
Applicant:
Inventor:
Patrick E Dailey, Torrance, CA (US);
Assignee:
Smith International, Inc., Newport Beach, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
175 40 ; 175 93 ;
Abstract
A drilling instrument adapted to be positioned in a conduit for the flow of mud. The instrument has a passage sealing a fluid from the mud. Means is responsive to energy derived from the mud for causing the sealed fluid to flow. An electrical generator derives energy from the flowing fluid to provide electrical energy.