Methods and apparatus for controlling the draining of water from

Details Methods and apparatus for controlling the draining of water from Methods and apparatus for controlling the draining of water from

1996-07-29

1998-11-17

Drodge, Joseph W.

Liquid purification or separation

Processes

Including controlling process in response to a sensed condition

210 94, 210138, 210175, 2102571, 2221461, B01D 1700, B01D 1712

Patent

active

058371478

ABSTRACT:
A water purifier filters and stores tap water in heated and cooled tanks and selectively discharges heated or cooled water through respective dispensing pipes. If the water in the purifier is suspected of being contaminated, an electrically actuated water discharge valve is opened by means of an electric switch to drain all water from the purifier through a discharge pipe. When the switch is first manipulated, a water discharge lamp on a display flashes on and off, and a predetermined time period, e.g., three seconds, is initiated. If the user manipulates the switch a second time before the three second expires, the lamp stays on, and the water discharge valve is opened to drain all water. If the user manipulates the switch a third time, subsequent to the three-second period and before the water has been entirely drained, the water discharge valve closes.

REFERENCES:
patent: 4014792 (1977-03-01), Gossett et al.
patent: 4792059 (1988-12-01), Kerner et al.
patent: 5064097 (1991-11-01), Brog et al.
patent: 5494573 (1996-02-01), Schoenmeyr et al.
patent: 5499197 (1996-03-01), Fou
patent: 5573142 (1996-11-01), Morellato et al.

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