Damper control device
AssigneeEffikal International, Inc.
InventorCory A. Weiss
Life of this patent
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Abstract
A device for controlling a damper in an appliance is disclosed comprising a motor having a rotatable shaft extending therefrom which is operatively connected to a plate of the damper, a control circuit which transmits current to the motor to rotate the shaft and in turn rotate the plate to a first position and to a second position, and a dynamic brake operatively connected to the motor, which acts to reduce rotation of the shaft when the circuit supplying current to the motor is opened.
Claims13
A device for controlling a damper in an appliance comprising, in combination:
- a motor having a rotatable shaft extending therefrom operatively connected to a plate of the damper;
- a control circuit for selectively transmitting current to the motor to rotate the shaft and in turn rotate the plate to a first position and to a second position;
- and
- a dynamic brake operatively connected to the motor to reduce rotation of the shaft when the current is removed from the motor.
A device for controlling a damper in a gas-fired appliance comprising, in combination:
- a motor;
- a shaft rotatable by the motor and extending therefrom, wherein the shaft is operatively connected to a plate of the damper;
- a cam coupled to the shaft for rotation therewith;
- a control circuit for selectively transmitting current to the motor to rotate the shaft and in turn rotate cam, wherein rotation of the cam to a first position actuates at least one switch which removes current from the motor;
- and
- a dynamic brake operatively connected to the motor to reduce rotation of the shaft when the control circuit supplying current to the motor is opened.
A device for an appliance comprising, in combination:
- a damper;
- a motor having a rotatable shaft extending therefrom operatively connected to a plate of the damper;
- a control circuit for selectively transmitting current to the motor to rotate the shaft and in turn rotate the plate to a first position and to a second position;
- and
- a resistor electrically connected in parallel to the motor, reducing rotation of the shaft when the current is removed from the motor.
Dependencies are inferred from the claim text.