Damper control device
OwnerCory A. Weissinventor
Life of this patent
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Abstract
A damper control device is disclosed comprising a mounting plate, a motor assembly coupled to the mounting plate and having a shaft extending therefrom, and a single circuit board coupled to the mounting plate, comprising relay control circuitry which rotates the shaft to an open position in response to a first signal, rotates the shaft to a closed position in response to a second signal, and time delay circuitry which holds the shaft in the open position for a period of time after receipt of the second signal. Preferably the damper control device can be used with an oil-fired heating appliance.
Claims14
A damper control device comprising, in combination:
- a mounting plate;
- a motor assembly coupled to the mounting plate and having a shaft extending therefrom;
- a single circuit board coupled to the mounting plate, comprising relay control circuitry which directs the shaft to move to an open position in response to a first signal and directs the shaft to move to a closed position in response to a second signal, and time delay circuitry which holds the shaft in the open position for a period of time after receipt of the second signal;
- wherein the relay control circuitry has a single pole relay which can operate at any one of a plurality of input voltages.
A damper control device comprising, in combination:
- a mounting plate;
- a motor assembly coupled to the mounting plate and having a shaft extending therefrom;
- a damper positioned in a vent, operatively connected to the shaft so as to move in response to rotation of the shaft, wherein the damper at least mostly closes the vent in a closed position and mostly allows air to pass in the vent in an open position;
- and
- a single circuit board coupled to the mounting plate, comprising time delay circuitry and relay control circuitry which in response to an electric signal urges the motor assembly to rotate the shaft so that the damper moves between an open position and a closed position;
- wherein when the shaft is in the open position and the relay control circuitry receives the electric signal to move to the closed position, the time delay circuitry holds the shaft in the open position for a period of time.
A damper control device comprising, in combination:
- a mounting plate;
- a motor assembly coupled to the mounting plate and having a shaft extending therefrom;
- and
- relay control circuitry which directs the shaft to move between an open position and a closed position, and time delay circuitry which holds the shaft in the open position for a preselected period of time after receipt of a signal to move the shaft to the closed position;
- wherein the relay control circuitry has a single pole relay which can operate at any one of a plurality of input voltages.
Dependencies are inferred from the claim text.