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. 06, 1976
Filed:
Nov. 29, 1973
Howard V Sears, Flat River, MO (US);
St. Joe Minerals Corporation, New York, NY (US);
Abstract
A tiltable coupling has one end thereof connected to a down-hole drill and has the other end thereof connected to a section of drill rod. By using that tiltable coupling, it is possible to cause a down-hole drill to drill curved holes in subterranean formations. That tiltable coupling serves to connect the section of drill rod to the down-hole drill, and also serves as a conduit for the compressed air which must be supplied to that down-hole drill. One preferred embodiment of the tiltable coupling has a fulcrum at one side thereof and has a piston at the opposite side thereof; and that piston will be left inactive whenever a straight section of the hole is to be drilled, but that piston will be actuated whenever a curved section of that hole is to be drilled. Sensors are incorporated into the tiltable coupling to indicate the attitude of the down-hole drill, and some of them lie in a plane at right angles to the plane in which the axis of the piston lies; and hence those sensors can indicate the attitude of the plane in which the curved section of the hole will lie.