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. 12, 1997
Filed:
Jan. 16, 1996
David Allen Brown, New Caney, TX (US);
Lee M Smith, Houston, TX (US);
Baroid Technology, Inc., Houston, TX (US);
Abstract
A centralizing tool for use in drilling an earth borehole. Drilling fluid pressure extends contact members radially from the tool into engagement with the borehole walls. A timing wheel engages each of the contact members to coordinate their radial movement. A fluid driven tubular central piston extending through the timing wheel causes the wheel to rotate as the piston is moved axially through the tool. High fluid pressure drives the contact members radially outwardly and moves the piston axially to compress a central coil spring surrounding the piston. Reduction of the drilling fluid pressure allows the spring force to return the piston to its initial axial position which rotates the timing wheel to retract the contact elements.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile