Electrical transmission or interconnection systems – Switching systems – Switch actuation
Patent
1975-05-12
1976-08-03
Schaefer, Robert K.
Electrical transmission or interconnection systems
Switching systems
Switch actuation
219 1055B, 3403091, G08B 100
Patent
active
039731359
ABSTRACT:
Two timing means are connected by a switching means, one of the timing means being operable to de-energize a load, the other energizing another load for a predetermined time after the first load has been de-energized.
REFERENCES:
patent: 3484769 (1969-12-01), Ehner
patent: 3767937 (1973-10-01), Schmidgall
Ginsburg M.
P. R. Mallory & Co. Inc.
Schaefer Robert K.
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