Stress relieved tool elements

Details Stress relieved tool elements Stress relieved tool elements

1976-02-05

1978-02-28

Kundrat, Andrew V.

Joints and connections

Screw or cam

285333, 403 41, F16B 718, E21B 17042

Patent

active

040764362

ABSTRACT:
Specially designed stress relief grooves for threaded end portions of tools and for collars on reciprocating or rotating drill string mounted tools.

REFERENCES:
patent: 1926925 (1933-09-01), Wescott
patent: 2045520 (1936-06-01), Davison
patent: 2110825 (1938-03-01), Archer
patent: 2606778 (1952-08-01), Myhre

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