Baths – closets – sinks – and spittoons – Flush closet – With automatic flush responsive means
Patent
1991-01-11
1992-12-15
Sholl, Linda J.
Baths, closets, sinks, and spittoons
Flush closet
With automatic flush responsive means
4379, 4380, 4407, E03D 100
Patent
active
051705141
ABSTRACT:
A system for controlling liquid flow in bathrooms and the like in response to the presence of the user, which is configuration-adjustable to permit use in preselected sanitary applications. Light emitting means cooperate with a light sensor to detect light reflected from the user. The filtered and amplified output signal from the sensor is demodulated to provide a DC output signal. First circuit means responsive to the DC output signal actuate fluid flow for a maximum preselected period, to enable use in controlling faucet flow. Second circuit means responsive to the DC signal include means for arming the circuit following the existence of the DC output signal for a first predetermined period; and means for thereupon generating a flow control signal for a second predetermined period following extinction of the DC output signal to enable use of the system to control flushing of urinals or commodes. Third circuit means responsive to the DC output signal provide a flow control signal during the existence of said DC output signal, to enable the system to be used for control of shower flow and include means for initial adjustment of water temperature. Configuration selection means, adjustable at installation of the system, enable the installer to configure the system to provide the DC output signal to one of the first, second or third circuit means.
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patent: 4756031 (1988-07-01), Barrett
patent: 5003643 (1991-04-01), Chung
Sholl Linda J.
Water-Matic Corporation
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