Patent ID: 11970915
Assignee: WEATHERFORD TECHNOLOGY HOLDINGS, LLC
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 0:
1. A tubular gripping assembly for handling a tubular, comprising:
a housing disposed on a rig floor, in which the housing contains a plurality of gripping members for gripping the tubular;
a first fluid line for opening the gripping members, the first fluid line having a first check valve;
a second fluid line for closing the gripping members; and
a load transfer indicator assembly attached to the housing, the load transfer indicator assembly having:
an indicator configured to contact the rig floor prior to a transfer of a weight of the tubular away from the tubular gripping assembly, in which the indicator is movable relative to the housing; and
a sensor valve configured to open the first check valve for fluid communication through the first fluid line in response to relative axial movement between the indicator and the housing.