Electricity: electrical systems and devices – Control circuits for electromagnetic devices – Systems for magnetizing – demagnetizing – or controlling the...
Patent
1977-06-29
1979-01-02
Moose, Jr., Harry E.
Electricity: electrical systems and devices
Control circuits for electromagnetic devices
Systems for magnetizing, demagnetizing, or controlling the...
335190, 361166, 361191, H01H 4702
Patent
active
041330200
ABSTRACT:
A control switch has a switch shaft carrying radially positioned contacts and mounted for reciprocal rotational movement about its axis. A cam profile is fixed to the shaft and has first and second opposed cam surfaces. A driver is mounted to selectively engage the first or second cam surface to drive the switch shaft into a first clockwise position or a second counterclockwise position by remote actuation. The driver is connected to a rotary solenoid and a linear solenoid which allow uni-directional drive translated into two directional drive by the driver.
One form of control circuit operates a rotary solenoid and a linear solenoid through a trip and close switch. A first relay is responsive to actuation of the trip switch means or close switch means to energize the rotary solenoid and index the switch shaft to a preselected position holding that position for a preselected time after which the shaft returns to its original position regardless of whether or not the trip switch or close switch are deactuated. A second relay denenergizes the first relay means after a preselected time preventing further operation of the first relay means and therefore the solenoid, until the trip or close switch is deactuated.
In still another control circuit, the first relay is responsive to actuation of the trip switch or close switch to energize the rotary solenoid and index the shaft to a preselected position. A second relay maintains electrical power to the rotary solenoid holding the shaft in the preselected position until such time as the switch means are deactuated. The rotary solenoid operation is responsive to the operation of and follows the trip and close switches.
REFERENCES:
patent: 3801876 (1974-04-01), Lotspeich
patent: 4001740 (1977-01-01), MacLean
Electro Switch Corp.
Moose Jr. Harry E.
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