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:
Mar. 03, 1981
Filed:
Aug. 20, 1979
Bela Geczy, Glendale, CA (US);
Smith International, Inc., Newport Beach, CA (US);
Abstract
An in-hole motor drill assembly has the rotor of the motor which may be connected to the drill bit through a shaft connected to the rotor, and a housing which may be connected to the running string, and normally disengaged torque transmitting members between said housing and said shaft. Means are provided for engaging said shaft and said housing for mutual rotation by exerting a negative force on said housing, if the bit is stuck. The shaft can be rotated by rotation of the housing in either direction when mounted in a well and the housing connected to a drill string and the shaft connected to a bit. In normal operation, during drilling, the housing is disengaged to permit the shaft to rotate relative to the housing.