Measuring and testing – Ductility or brittleness
Patent
1976-03-22
1977-08-16
Ruehl, Charles A.
Measuring and testing
Ductility or brittleness
85 62, 116DIG34, F16B 3102
Patent
active
040417760
ABSTRACT:
An optical indicator of the type wherein the lessening of the load on a member under strain produces movement of an indicator element. Such movement takes place when the relaxation of the member under strain has reached a certain predetermined value thereby giving an immediate visual indication of that fact.
REFERENCES:
patent: 3602186 (1971-08-01), Popenoe
patent: 3886840 (1975-06-01), Bossler
patent: 3908508 (1975-09-01), Payne
Modulus Corporation
Ruehl Charles A.
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