Method for locking out a reset mechanism on electrical...

Details Method for locking out a reset mechanism on electrical... Method for locking out a reset mechanism on electrical...

2005-01-11

2005-01-11

Donovan, Lincoln (Department: 2832)

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Automatic circuit-interrupting devices

C361S042000

Reexamination Certificate

active

06842095

ABSTRACT:
An electrical protective device that includes a reset mechanism uses a resistor body to act as a hold-off to a spring driven lockout for the reset mechanism. Upon the failure of an internal component of the protective device, the spring driven lockout mechanism is released by I2R thermal action which causes a resistor to burn in half, or in the alternative, to melt solder mounting the resistor, thereby eliminating the hold-off and locking out the reset mechanism.

REFERENCES:
patent: 4409574 (1983-10-01), Misencik et al.
patent: 4642597 (1987-02-01), Sako
patent: 4851951 (1989-07-01), Foster, Jr.
patent: 4903160 (1990-02-01), Elmore et al.
patent: 5223810 (1993-06-01), Van Haaren
patent: 5933063 (1999-08-01), Keung et al.
patent: 20020135958 (2002-09-01), Germain et al.

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