초록 ▼

System for controlling the flow of water to a faucet head and drinking fountain with controls for an on-off switch responsive to an individual activation or approach and including a control for preventing the continuous flow of water, and readying the faucet head and drinking fountain to supply wate

System for controlling the flow of water to a faucet head and drinking fountain with controls for an on-off switch responsive to an individual activation or approach and including a control for preventing the continuous flow of water, and readying the faucet head and drinking fountain to supply water on a future demand, and material to isolate the water from the controls and employing separate filters to operate in circuit with the controls for rendering the switch responsive to individual activation.

대표청구항 ▼

A system for controlling the flow of water through water supply means to provide a supply of water, including a sensor operatively associated with the water supply means to cause water to be supplied by the water supply means to said supply of water; said sensor including: at least two filter retain

A system for controlling the flow of water through water supply means to provide a supply of water, including a sensor operatively associated with the water supply means to cause water to be supplied by the water supply means to said supply of water; said sensor including: at least two filter retainers and a filter received within each said filter retainer, a circuit board including control circuit means and connection means associated with said filters for connection thereof with said control circuit means; said control circuit means including: a first control circuit coupled with said filters for sensing and determining the continued external activation characteristic of a presence of a user proximate to said supply of water or external activation of the sensor operatively associated with said supply of water and within the range of energization of said sensor and the absence of the characteristic of external activation or presence of a user; a second control circuit coupled with said first control circuit including water flow time commencement means responsive to said characteristic for determining the time of commencement of the flow of water to said supply of water through said water supply means in response to an external activation of said control circuit means through said filters after the elapse of a predetermined period of time; a third control circuit responsive to said second control circuit including water flow shut-off means for permitting water to flow solely to said supply of water for a predetermined period of time after commencement of water flow by said second control circuit, said third control circuit causing the water flow to said supply of water to be shut off after a predetermined period of time of water flow and overriding said second control circuit and activation of said control circuit means received thereby to prevent said second control circuit from commencing water flow; and means for providing isolation for said first, second and third control circuits from water and other contaminants.