Apparatus for preventing unwanted operation of sensor activated flush valves
First Claim
1. An automatic flushing system, comprising:
- means for activating a flush valve to flush a sanitary disposal device, said activating means including first and second infrared filters to prevent the system from staying in its armed or working mode and burning itself out; and
an infrared sensor activated circuit for transmitting an infrared signal through said first filter and receiving a reflection of said frared signal through said second filter to activate the flush valve responsive to the reflection of the infrared signal received through said second filter.
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Accused Products
Abstract
A flushing system for a sanitary disposal device, such as a urinal or a water closet, including a flush valve, a flush valve actuator and external controls to control the activation of the flush valve to predetermine the time when the flush valve is rendered operative to be activated, and a sensor responsive circuit responsive to the receipt of infrared rays transmitted or reflected from a particular area or volume relative to the sanitary disposal device for activating the sensor responsive circuit to cause the flush valve to be rendered operative to flush the sanitary disposal device, and a control to provide for adjustment in the field of the particular area or volume which is to render the sensor responsive circuit activated.
92 Citations
20 Claims
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1. An automatic flushing system, comprising:
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means for activating a flush valve to flush a sanitary disposal device, said activating means including first and second infrared filters to prevent the system from staying in its armed or working mode and burning itself out; and an infrared sensor activated circuit for transmitting an infrared signal through said first filter and receiving a reflection of said frared signal through said second filter to activate the flush valve responsive to the reflection of the infrared signal received through said second filter. - View Dependent Claims (2, 3, 4, 5, 6, 12, 13, 14, 15, 16, 17, 18, 19)
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7. An automatic flushing system for a sanitary disposal device such as a urinal or a water closet, comprising:
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infrared sensor responsive means for activating a sensor responsive flush valve to flush the sanitary disposal device; means externally controlled including an overriding control to control said activating means to predetermine the time after a power fault when said sensor activating means is rendered receptive to be rendered operative to render said flush valve operable; and means responsive to restoration of power after the power fault to cause said sensor responsive flush valve to rest in the valve-off condition to thereby provide for the valve to resume operation when normally actuated. - View Dependent Claims (8, 9, 10, 11)
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20. An automatic flushing system, comprising:
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means for activating a flush valve to flush a sanitary disposal device, said activating means including first and second infrared sensors; an infrared sensor activated circuit for transmitting an infrared signal from said first sensor and receiving a reflection of said infrared signal by said second sensor to activate the flush valve responsive to the reflection of the infrared signal received by said second sensor; and means externally controlled including an overriding control to control said activating means to predetermine the time after a power fault when said activating means is rendered operative to render said flush valve operable.
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Specification