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:
Aug. 04, 1981
Filed:
Feb. 22, 1980
Tibor O Edmond, Ponca City, OK (US);
Henry A Bourne, Jr, Ponca City, OK (US);
Conoco, Inc., Ponca City, OK (US);
Abstract
An improved deflecting device is provided for a drilling apparatus having a rotatable drill shaft extending from a power source through said deflection device to a drill bit. The deflection device includes an outer housing affixed to the power source and extending axially therefrom. An inner ring is disposed within the housing and encompasses a portion of the drill shaft. An intermediate ring is disposed between the outer housing and the inner ring and has an inner configuration such that the inner ring is immovable relative to the intermediate ring in a first direction, and is prevented from rotating relative to said intermediate ring about an axis parallel to a second direction perpendicular to said first direction, and such that said inner ring is movable relative to the intermediate ring in said second direction. The intermediate ring is movable in the first direction relative to the outer housing, and is prevented from rotating relative to said outer housing about an axis parallel to said first direction. First and third opposed hydraulic rams are provided for positioning the intermediate ring relative to the outer housing in the first direction. Second and fourth opposed hydraulic rams are provided to position the inner ring relative to the intermediate ring in the second direction. A sequencing valve selectively directs hydraulic fluid under pressure to any one of said first, second, third and fourth hydraulic rams or to any transverse pair of said hydraulic rams.