Fastener tension indicator

Details Fastener tension indicator Fastener tension indicator

1996-12-20

1999-06-22

Wilson, Neill R.

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

With means to indicate application of predetermined...

Axially deformable member or portion

411 14, 411917, 116DIG34, F16B 3102

Patent

active

059136472

ABSTRACT:
A mechanical sensor for use with bolts, nuts, eye bolts and other fasteners is provided to sense fastener tension and to mechanically indicate that tension and changes therein by mechanically measuring deformation of the substrate being clamped by the fastener relative to the distortion or lack thereof in the substrate immediately adjacent the deformed substrate. The differential substrate deformation produces measurable and often clearly visible movement of a portion of the sensor. Such movement may be interrogated through utilization of visual, optical, electro-optical means as desired.

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patent: 3469492 (1969-09-01), Dahl
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patent: 4131050 (1978-12-01), Holmes
patent: 4164164 (1979-08-01), Trungold
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patent: 4483648 (1984-11-01), Trungold
patent: 4773272 (1988-09-01), Trungold
patent: 5199835 (1993-04-01), Turner
patent: 5385054 (1995-01-01), Kramer

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