Tool lifting devices, oilfield flange lifting safety devices, and related methods of use
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United States of America Patent
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Mar 12, 2019
Grant Date -
Dec 28, 2017
app pub date -
Jun 28, 2017
filing date -
Jun 28, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
A tool lifting device has: arms connected to pivot relative to one another; and a load bearing pin secured to a first arm of the arms, the arms having a closed position where the load bearing pin is supported by, and spans a tool receiving gap defined between, the arms. A tool lifting device has: arms connected to pivot relative to one another; a load bearing pin supported by one or more of the arms, the arms having a closed position where the load bearing pin extends across a tool receiving gap defined between the arms; and a pivot lock for restricting the arms from pivoting relative to one another in the closed position.
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