Patent ID: 11952843
Assignee: nan
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 0:
1. A tool for holding a well column pipe at the upper end of a casing pipe, said tool comprising:
(a) a plate having a lateral end, an oppositely lateral end, a longitudinal end, and an oppositely longitudinal end, the plate being laterally oblongated;
(b) a seam having longitudinal and oppositely longitudinal faces, the seam extending oppositely laterally from the plate's lateral end, said seam dividing the plate into longitudinal and oppositely longitudinal segments, each of said longitudinal and oppositely longitudinal segments being laterally oblongated for, upon placements of said segments over the upper end of the casing pipe, bridging across said upper end;
(c) longitudinal and oppositely longitudinal concavities respectively formed by the seam's longitudinal and oppositely longitudinal faces;
(d) a hinge connected operatively to the plate, the hinge being positioned at a lateral end of the seam;
(e) a releasable latch connected operatively to the plate, the releasable latch being positioned at an oppositely lateral end of the seam;
(f) at least a first jaw fixedly attached to or formed wholly with a segment selected from the group consisting of the plate's longitudinal segment and the plate's oppositely longitudinal segment, said jaw being adapted for frictional engagement with the well column pipe; and
(g) means for driving the well column pipe against the at least first jaw, wherein one of the faces among the seam's longitudinal and oppositely longitudinal faces forms a groove component of a tongue and groove combination, wherein the other face among the seam's longitudinal and oppositely longitudinal faces forms a tongue component of said tongue and groove combination, and wherein said tongue and groove combination is positioned between the hinge and the releasable latch, wherein the means for driving the well column pipe against the at least first jaw comprises a second hinge comprising an axle connected operatively to the at least first jaw, and wherein the at least first jaw comprises a clamping block, wherein said clamping block comprises a pair of arms extending oppositely from the axle, wherein each arm among the pair of arms has a distal end, wherein each arm's distal end presents a plurality of teeth.