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n4google.
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Subject Item
isa:265790093
rdf:type
prov:Entity
prov:value
In pipe suspension mechanism, a pipe gripping spider assembly comprising a body adapted to be supported above a well bore and having a vertical passageway therethrough for the reception of a pipe extending into the bore, radially movable pipe gripping members in said body, and means for simultaneously moving said members into and out of gripping engagement with the pipe, said means including links
prov:wasQuotedFrom
n4:com
Subject Item
isap:85159177
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isa:265790093