Apparatus for gripping a pipe
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United States of America Patent
Stats
-
Mar 24, 1998
Grant Date -
N/A
app pub date -
Jul 1, 1996
filing date -
Dec 9, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus for gripping a pipe comprises an outer member having at least one inclined inner surface and an inner member having an inclined outer surface, a tubular member having an opening to accommodate said inner member and a threaded part, and a threaded gear engaged with the threaded part of the tubular member. On rotation of the threaded gear the tubular member moves the inner member which co-operates with the outer member so that said inner member moves towards a pipe to be gripped. The apparatus is particularly useful for applying 'non-marking' jaws to the outside of tubulars in the oil and gas industry.
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