Fail-safe resistor

Details Fail-safe resistor Fail-safe resistor

1989-03-27

1990-10-02

Miller, Jr., George H.

Electrical resistors

With base extending along resistance element

Resistance element coated on base

338309, H01C 1012

Patent

active

049610651

ABSTRACT:
An electrical resistor is formed upon the substrate. The substrate is laser scribed, preformed, or notched in such a way as to control accurately the breakage of the substrate dependent upon the thermal stress load produced by the resistor. By varying the position of the scribe or notch, the device can be programmed to repeatably shatter at an infinite number of time-load points. The method for applying this technique is also described for other substates or configurations.

REFERENCES:
patent: 2263752 (1941-11-01), Babler
patent: 2730598, Lytle
patent: 3836883 (1974-09-01), Takayasu et al.
patent: 3978443 (1976-08-01), Dennis et al.
patent: 4134096 (1979-01-01), Denes
patent: 4208645 (1980-06-01), Harmon et al.
patent: 4263574 (1981-04-01), Mori et al.
patent: 4315235 (1982-02-01), Jacobs, Jr.
patent: 4494104, Holmes

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