Tubular gripping apparatus with locking mechanism
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United States of America Patent
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Jul 30, 2013
Grant Date -
N/A
app pub date -
Feb 14, 2009
filing date -
Jan 26, 2009
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A tubular gripping apparatus has a jaw assembly that has a tubular-contacting surface at an end thereof, a drive yoke that has a tubular-contacting surface at an end thereof, an actuator connected to the drive yoke, and a locking mechanism interconnected to the drive yoke. The drive yoke is connected to the jaw assembly. The actuator moves the jaw assembly and the drive yoke such that the tubular-contacting surfaces thereof move radially inwardly for a substantially identical distance. The locking mechanism directs a load away from the actuator while the jaw assembly and the drive yoke grip the tubular. The locking mechanism has a cylinder yoke positioned around the piston-and-cylinder assembly, and a wedge assembly positioned adjacent the bearing bar and the cylinder yoke. The wedge assembly is suitable for contacting the cylinder yoke so as to prevent a movement of the cylinder yoke.
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