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. 08, 2006
Filed:
Nov. 05, 2001
Joerg Erich Schulze-beckinghausen, Garbsen, DE;
Bernd-georg Pietras, Wedemark, DE;
Joerg Erich Schulze-Beckinghausen, Garbsen, DE;
Bernd-Georg Pietras, Wedemark, DE;
Weatherford/Lamb, Inc., Houston, TX (US);
Abstract
Apparatus for gripping and releasing a tubular and comprising an elevator () having slips () for gripping and releasing a tubular (). A spider () has slips () for gripping and releasing the tubular (). A mechanically operated valve () is provided for controlling the supply of pressurised fluid to move the spider slips () between a gripping position and a release position, with sensor means () detecting when the elevator slips () are in the gripping position. Means () mechanically inhibits movement of the valve () to a position in which the spider slips () release the tubular () when said sensor means () detects that the elevator slips () are not in a correctly gripping position. A second valve () controls movement of the elevator slips () and a guide plate () links control of both valves ().
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile