Electricity: motive power systems – Automatic and/or with time-delay means – Time or with time-delay means
Patent
1979-03-26
1980-04-29
Smith, Jr., David
Electricity: motive power systems
Automatic and/or with time-delay means
Time or with time-delay means
119 5111, 3071414, H01H 700, H01H 4300
Patent
active
042008263
ABSTRACT:
In a timing circuit for controlling the time of operation of the electric motor of a game feeder, first and second semiconductor switching devices are connected so that the control electrode of the first is connected to a power source but will not conduct until the second semiconductor switching device is conductive. The first switching device when conducting actuates motor control means to run the motor. The second switching device is in its conductive state for a period of time controlled by an RC timing circuit.
REFERENCES:
patent: 3165648 (1965-01-01), Sainsbury
patent: 3423600 (1969-01-01), Pringle
patent: 3458772 (1969-07-01), Egart et al.
patent: 3993569 (1976-11-01), Zinsmeyer et al.
Lehman H. Feeder & Plow, Inc.
Smith Jr. David
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