Apparatus for releasably holding a pipe, rod or the like
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United States of America Patent
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Jun 16, 2015
Grant Date -
Jan 22, 2015
app pub date -
Jul 18, 2014
filing date -
Jul 18, 2013
priority date (Note) -
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Abstract
For holding a pipe, rod or the like, such as a section of a pipe string of an offshore oil drilling rig, an apparatus includes a clamping device insertable into a support body. The clamping device includes a device body with a central opening bounded by an inner circumferential surface that conically tapers at a cone angle. The device further includes clamp elements that are received in the central opening of the device body and that each have a radially outer surface sloping along the cone angle to slide along the inner circumferential surface of the device body, and a radially inner clamping surface to clamp against the coaxially arranged pipe. A holding element respectively connects each clamp element to a linear actuator stroke element that is similarly tilted at the cone angle. The linear actuator may be received in a receiver shaft of the device body.
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