Opti-mechanical torque indicating connecting member

Details Opti-mechanical torque indicating connecting member Opti-mechanical torque indicating connecting member

1987-07-30

1988-12-27

Smith, Gary L.

Expanded, threaded, driven, headed, tool-deformed, or locked-thr

With means to indicate application of predetermined...

Color indicator

411 8, F16B 3102

Patent

active

047937513

ABSTRACT:
A connecting member comprises a rod-shaped body having a head and/or thread on the outer periphery for integrally connecting a plurality of members and a containing hole opened at one end thereof and extended longitudinally, a rod disposed in the hole so as to fix at its inner end to the inner end of the hole, a transmissive window fixed to the opening of the hole, and a fluid holding member holding a colored fluid and pressed by the open side end of the rod on the window. When a longitudinal strain developed in the body the rod release the holding member from under pressure so that colored fluid covers the open side end of the rod.

REFERENCES:
patent: 2879686 (1959-03-01), Lewis et al.
patent: 3602186 (1971-08-01), Popenoe
patent: 3799108 (1974-03-01), Mosow
patent: 3823639 (1974-07-01), Liber
patent: 3964299 (1976-06-01), Johnson
patent: 3987668 (1976-10-01), Popenoe
patent: 3987699 (1976-10-01), Popenoe

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