Bolt tension indicating means

Details Bolt tension indicating means Bolt tension indicating means

1979-07-09

1981-12-01

Foss, J. Franklin

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

With means to indicate application of predetermined...

Axially deformable member or portion

411531, F16B 3102

Patent

active

043030017

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 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: 3174386 (1965-03-01), Lewis
patent: 3224316 (1965-12-01), Grikscheit et al.
patent: 3285120 (1966-11-01), Kartiala
patent: 3383974 (1968-05-01), Dahl
patent: 3495907 (1970-02-01), Rogers
patent: 3783734 (1974-01-01), Velthoven
patent: 3788186 (1974-01-01), Crites

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