Threaded joint toggle-locked with a helical spring

Details Threaded joint toggle-locked with a helical spring Threaded joint toggle-locked with a helical spring

1981-08-17

1983-10-11

Shedd, Wayne L.

Joints and connections

Including ancillary means blocking disconnection of joint

Cam or thread lock

285 92, 411148, 411134, B25G 300, F16D 100, F16G 1100

Patent

active

044089279

ABSTRACT:
A resilient holding device comprising a looped helical spring or a closed loop of interconnected essentially circular disc elements confined to an annular cavity circumferentially within a threaded joint or coupling. By tightening the threaded joint or coupling such as to engage the confined spring, a latching effect is created that requires a reverse torque for disassembly that exceeds the torque required to tighten. Such a torque biased threaded coupling is particularly useful in oil field applications.

REFERENCES:
patent: 2129704 (1938-09-01), Meyer
patent: 3390900 (1968-07-01), McCormick et al.
patent: 3880451 (1975-04-01), Kinzbach
patent: 4165194 (1979-08-01), Flower

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