Tension bolt having adjustable stress level

Details Tension bolt having adjustable stress level Tension bolt having adjustable stress level

1989-10-16

1991-01-01

Wilson, Neill R.

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

With means to indicate application of predetermined...

Including gauge means

411 9, 73761, 116DIG34, F16B 3112

Patent

active

049814044

ABSTRACT:
For anchoring heavy machinery to foundations, previously tensioned stress-level indicating bolt connectors are provided. In a top axial cavity of the connector, threads are provided to mount an angularly adjustable stress-level indicating pin. In use, when the design tension stress level is reached and the connector thereby extended, angular freedom or restraint of the gaging pin indicates that the pre-set stress has been reached or exceeded. Indicia angularly arranged on the connector end facilitate adjustment of the pin to provide upper or lower stress levels.

REFERENCES:
patent: 3248923 (1966-05-01), Blakeley
patent: 4525114 (1985-06-01), Hirst

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