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US Patent 7946795 Telescoping jack for a gripper assembly

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Patent abstractTimelineTable: Further ResourcesReferences
Is a
Patent
Patent

Patent attributes

Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
Patent Number
7946795
Patent Inventor Names
Keith J. Orgeron6
Date of Patent
May 24, 2011
Patent Application Number
12259251
Date Filed
October 27, 2008
Patent Citations Received
‌
US Patent 12116846 Passive rotation disconnect
1
‌
US Patent 11834914 Quick coupling drill pipe connector
2
‌
US Patent 11891864 Pipe handling arm
3
‌
US Patent 11982139 Passive spacer system
4
‌
US Patent 11988059 Dual activity top drive
5
‌
US Patent 11767719 Robotic pipe handler
Patent Primary Examiner
‌
Gregory W Adams
Patent abstract

A pipe handling apparatus has a base, a main rotating structural member pivotally connected to the base, a pipe handler connected to the main rotating structural member for moving a pipe from a generally horizontal orientation to a vertical orientation, and a jack connected to the pipe handler. The jack exerts a downward force in generally parallel relation to the pipe when the pipe is in the vertical orientation. The pipe handler has a gripping structure for gripping an outer surface of the pipe. The gripping structure has a stab frame. The jack is affixed to the stab frame. The jack has a piston-and-cylinder assembly positioned relative to the stab frame, and a hydraulic actuator connected to the piston-and-cylinder assembly. The hydraulic actuator is suitable for passing hydraulic fluid to the piston-and-cylinder assembly so as to move the piston-and-cylinder assembly from a retracted position to an extended position.

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