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:
Apr. 30, 2002
Filed:
Dec. 10, 1999
Leonardo Ritorto, Edmonton, CA;
Robert Roszak, Edmonton, CA;
Canadian Downhole Drill Systems Inc., Alberta, CA;
Abstract
A locking swivel device is provided for connection with a proximal end of a drill string and for conducting a drilling fluid to the drill string. The device is comprised of a housing and a mandrel rotatably supported within the housing such that an annular space is defined between the housing and the mandrel, wherein one of the housing and the mandrel is connectable with the drill string such that the drill string rotates therewith. A clutch assembly is positioned within the annular space which is actuatable between an engaged condition in which the clutch assembly engages the housing and the mandrel in order to inhibit the rotation of the mandrel relative to the housing and a disengaged condition in which the clutch assembly disengages the housing and the mandrel in order to permit the rotation of the mandrel relative to the housing. The clutch assembly is actuated to the engaged condition by a pressure exerted by the drilling fluid.