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:
Feb. 12, 1980
Filed:
Jun. 12, 1978
Wallace Clark, Indianapolis, IN (US);
Other;
Abstract
There is disclosed a down-hole drilling motor having a connection to the drill bit, such that, when desirable or necessary, fluid may be circulated in the bore by means of the motor to clean out undue accumulation of cuttings, or for other reasons, while at the same time the bit is stopped, thereby saving wear on the bit and bit drive parts. When the motor is disconnected from the drill shaft, the drill shaft may be locked to the drill pipe so that the bit may be rotated by turning the drill pipe from the top of the bore with the conventional rotary table to permit the operator to drill his way out if the drill is stuck or to roll the bit out from under a ledge under which it might be caught during drilling.