Bolt tension indicating means

Details Bolt tension indicating means Bolt tension indicating means

1977-08-18

1979-08-14

Foss, J. Franklin

85 50R, F16B 3102

Patent

active

041641647

ABSTRACT:
Improved flat annular washer for indicating tension on associated high tensile strength bolt. Washer bears against either bolt head or nut of given radius. Washer includes means for indicating stress on washer which means is located a distance from center of washer at least equal to radius of bolt head or nut. Indicating means visibly moves when stress on washer, which is related to tensile stress on bolt, reaches a preselected level.

REFERENCES:
patent: 2824481 (1958-02-01), Johnson
patent: 3060731 (1962-10-01), Adise
patent: 3104645 (1963-09-01), Harrison
patent: 3153974 (1964-10-01), Canning
patent: 3285120 (1966-11-01), Kartiala
patent: 3383974 (1968-05-01), Dahl
patent: 3495907 (1970-02-01), Rogers
patent: 3788186 (1974-01-01), Crites

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