Pre-set torque limiter sub

Details Pre-set torque limiter sub Pre-set torque limiter sub

1985-10-15

1987-04-07

Kundrat, Andrew V.

Pipe joints or couplings

With assembly means or feature

285 92, 285114, 285333, 403299, 411178, 192 56R, F16L 3500

Patent

active

046554793

ABSTRACT:
A preset torque limiter sub having a pin member and a box member. The pin member is connected to a section of drill pipe and has a male connection at one end. The box member is connected to a second section of drill pipe. The male connection and the female connection are connected together. Whenever the torque on the sub exceeds a selected amount, the pin member and the box member can rotate with respect to one another. However, whenever the torque on the sub is below the selected amount, the pin member and the box member are held rigidly together.

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patent: 4538838 (1985-09-01), Pringle

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