Method and means for indicating an appliance condition
First Claim
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1. Apparatus for displaying the progressive drying of initially moist fabrics from a wet condition to a dry condition within a rotating drum of a drying appliance, said apparatus comprising:
- a moisture sensing circuit including a pair of spaced apart sensor bars in said drum, said moisture sensing circuit being capable of creating an intermittent sensor signal having a high frequency when said sensor bars are bridged by said moist fabrics and having a progressively lower frequency down to a frequency of zero corresponding to the progressive drying of said fabrics to said dry condition;
a power source;
an electrically actuatable indicator connected to said power source;
a gate connected between said power source and said indicator and also being connected to said sensor bars of said moisture sensing circuit, said gate being adapted to change from a normally open circuit condition preventing electrical connection between said power source and said indicator to a closed circuit condition causing electrical connection from said power source to said indicator in response to said sensor signal and at a frequency corresponding to said frequency of said sensor signal whereby said indicator will be actuated at a frequency corresponding to said frequency of said sensor signal.
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Abstract
A display is provided for indicating changes between first and second operating conditions in an appliance such as a clothes dryer. A sensing circuit senses changes in operating conditions within the appliance. The sensing circuit creates an intermittent sensing signal which is sent to a light. The light blinks at a frequency corresponding to the frequency of the sensor signal. A second light remains lit continuously during the operation of the appliance.
36 Citations
6 Claims
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1. Apparatus for displaying the progressive drying of initially moist fabrics from a wet condition to a dry condition within a rotating drum of a drying appliance, said apparatus comprising:
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a moisture sensing circuit including a pair of spaced apart sensor bars in said drum, said moisture sensing circuit being capable of creating an intermittent sensor signal having a high frequency when said sensor bars are bridged by said moist fabrics and having a progressively lower frequency down to a frequency of zero corresponding to the progressive drying of said fabrics to said dry condition; a power source; an electrically actuatable indicator connected to said power source; a gate connected between said power source and said indicator and also being connected to said sensor bars of said moisture sensing circuit, said gate being adapted to change from a normally open circuit condition preventing electrical connection between said power source and said indicator to a closed circuit condition causing electrical connection from said power source to said indicator in response to said sensor signal and at a frequency corresponding to said frequency of said sensor signal whereby said indicator will be actuated at a frequency corresponding to said frequency of said sensor signal. - View Dependent Claims (2, 3)
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4. A method for displaying the progressive drying of initially moist fabrics from a wet condition to a dry condition within a rotating drum of a drying appliance, said method comprising:
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creating an intermittent sensor signal with a moisture sensing circuit including a pair of spaced apart sensor bars within said drum by bridging said sensor bars with damp fabrics during rotation of said drum, said intermittent sensor signal having a high frequency when said fabrics are in said wet condition and a progressively decreasing frequency down to a zero frequency corresponding to the progressive drying of said fabrics to said dry condition; connecting an actuatable indicator to a power source; connecting a gate between said power source and said indicator; connecting said sensor bars of said moisture sensing circuit to said gate; changing said gate from an open circuit condition preventing actuation of said indicator to a closed circuit condition connecting said indicator to said power source for actuating said indicator; said changing of said gate being done in response to said sensor signal from said sensor bars and at the same frequency as said frequency of said sensor signal, whereby said indicator will be actuated at a frequency corresponding to said frequency of said sensor signal. - View Dependent Claims (5, 6)
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Specification