Electricity: electrical systems and devices – Safety and protection of systems and devices – Load shunting by fault responsive means
Patent
1983-07-05
1985-10-15
Moose, Jr., Harry E.
Electricity: electrical systems and devices
Safety and protection of systems and devices
Load shunting by fault responsive means
361 56, 361 91, 361104, H02H 320
Patent
active
045478279
ABSTRACT:
A self-contained fused unit for the protection of electrical appliances against damage caused by abnormal power surges is disclosed. Fuses are selected so that the proper amperage required to operate any appliance can be delivered through the power surge isolator while full protection of the appliance against abnormal power surges is provided. Varistors connected between terminals of the device augment the protective action of fuses in the event that certain kinds of power surges are encountered which are so fast that fuses may not blow in time to protect the appliance. In such cases, the instantly decreased resistance in the varistors assures grounding of the excessive current without damage to the appliance occurring.
REFERENCES:
patent: 662466 (1900-11-01), Sachs
patent: 894705 (1908-07-01), Schattner
patent: 1171166 (1916-02-01), Brach
patent: 1754709 (1930-04-01), Brach
patent: 3493815 (1970-02-01), Hurtle
patent: 3539961 (1970-11-01), Worthington
patent: 3840781 (1974-10-01), Brown
patent: 4075676 (1978-02-01), Phillips, Jr.
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