Patent ID: 11952867
Assignee: PROTORQUE CONNECTION TECHNOLOGIES, LTD.
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 3:
4. A tool fall arrest device for securing an overhead tool while in use, said device comprising:
a ring assembly positioned between a rotary unit and a fully made-up connected rotating tool string, said tool string having a longitudinal axis, said assembly including an outer ring and an inner ring;
said outer ring having a first state during connected tool string operation and a second state tethered to said rotary unit;
said inner ring includes a clamping ring assembly including a clamping ring, at least one insert having an insert guide attached thereto whereby said insert guide traverses a channel on said clamping ring along an axis which is substantially perpendicular to the longitudinal axis which brings said insert into engagement with said tool string when said assembly is clamped from an unengaged position and to an engaged position whereby said engaged position clamps said inner ring to said rotating tool string;
a bearing positioned between said rings whereby said inner ring rotates with said rotating tool string when said inner ring is clamped to said rotating tool string; and
at least one anchor for coupling said outer ring to said rotary unit and holding said rotating tool string in the event of a rotary unit disconnect.