E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
255/14.3
E21B 19/10 (2006.01) E21B 19/06 (2006.01)
Patent
CA 1229843
ABSTRACT OF THE DISCLOSURE An elevator for drill pipe which includes at least two jaws for supporting a length of pipe and structure for maintaining the jaws in clamping engage- ment with the pipe. The structure includes linkage means coupled to the jaws for maintaining the jaws clamped to the pipe when the elevator and pipe are urged apart by gravity due to the weight of the pipe as when the pipe is raised or otherwise supported by the elevator. Additionally or alternatively, the elevator includes a pressure actuator assembly connected to the jaws for applying a positive force against the jaws for maintaining the jaws clamped to the pipe independent of the effect of gravity and, thus, independent of the orientation of the elevator.
477997
Haney Keith M.
Willis Clyde A.
Ridout & Maybee Llp
Walker-Neer Manufacturing Co. Inc.
LandOfFree
Automatic pipe elevator does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Automatic pipe elevator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic pipe elevator will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1230721