Device for positioning equipment
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 29, 1994
Grant Date -
N/A
app pub date -
Oct 19, 1993
filing date -
Oct 21, 1992
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A device (1) for position a tong comprises a flexible chain (2) provided with compression members (7) and a flexible locking chain (3). When a hydraulic motor (14) is rotated anti-clockwise the chains (2,3) are brought into operative engagement to form a rigid member (4) which is secured to a ball (29) on the drilling derrick. A tong is suspended from the device (1) which, in turn, is suspended from a cable (27) secured high in the derrick. The tong can be advanced or withdrawn towards a pipe string by rotating the motor (14) anti-clockwise or clockwise to extend or dismantle the rigid member (4) as desired.
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Cited Art Landscape
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