Capacitive touch on/off control for an automatic residential...

Details Capacitive touch on/off control for an automatic residential... Capacitive touch on/off control for an automatic residential...

2005-11-08

2005-11-08

Lee, Kevin (Department: 3753)

Fluid handling

Systems

Programmer or timer

C137S624110, C137S801000, C251S129040, C004S623000

Reexamination Certificate

active

06962168

ABSTRACT:
A capacitive touch-controlled automatic faucet comprises: a spout, a magnetically latching valve, a proximity sensor, a handle, a capacitive touch-control, and a logical control. The proximity sensor is sensitive to motion of objects within a detection zone of the proximity sensor. The handle determines a water flow rate and temperature. The capacitive touch-control is positioned in the spout and generates an output signal while the touch-control is in contact with a user. The logical control receives the output signal, and toggles the magnetically latching valve when the output signal begins and ends within a period of time less than a predetermined threshold, but does not toggle the magnetically latching valve when the output signal persists for a period longer than the predetermined threshold. The faucet has a manual mode, wherein the proximity sensor is inactive, and a hands-free mode, wherein water flow is toggled in response to the proximity sensor.

REFERENCES:
patent: 5566702 (1996-10-01), Philipp
patent: 5694653 (1997-12-01), Harald
patent: 5730165 (1998-03-01), Philipp
patent: 5893387 (1999-04-01), Paterson et al.
patent: 6619320 (2003-09-01), Parsons
TOTO Products, “Commercial Faucets”, 2 pages.
ZURN Plumbing Products Group, 07Aquasense Sensor Operated Faucets, 2 pages.
SLOAN, Optima i.q. Faucet, 1 page.
Symmons, “Ultra-Sense S-6080”, 1 page.
Technical Concepts, AutoFaucet® with “Surround Sensor” Technology, 2 pages.

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