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US 2003/0145957 A1Published application
Low power, high resolution position encoder for motorized window covering
OwnerDouglas R. Domel, Winston G. Walkerinventors
Life of this patent
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Abstract
A motorized window covering has a motor and a housing that holds the motor and a dc battery. When the motor is energized to move a window covering, a pulse detector counts the electrical pulses of the motor to determine the position of the window covering. A user can save a current pulse count corresponding to a desired position and then return the desired position from a different position by simply pressing a button on a remote control unit.
Claims13
A method for controlling a motorized window covering, comprising the acts of:
- establishing a user-defined position of the window covering;
- in response to a user generated signal, energizing a motor coupled to the window covering;
- counting pulses of the motor;
- and
- based on the counting act, determining when the window covering reaches the user-defined position.
2 more elements
A motorized window covering, comprising:
- a window covering;
- an actuator coupled to the window covering, the actuator being used to move the window covering;
- a motor coupled to the actuator;
- and
- a pulse detector electrically connected to the motor, the pulse detector counting pulses of the motor when the motor is energized.
2 more elements
Dependencies are inferred from the claim text.