Method and system for providing temperature-controlled water...

Details Method and system for providing temperature-controlled water... Method and system for providing temperature-controlled water...

2005-05-26

2008-10-14

Norman, Marc E (Department: 3744)

Automatic temperature and humidity regulation

Thermostatic

With pressure control

C004S598000, C165S104190, C165S104280, C222S054000, C137S340000

Reexamination Certificate

active

07434745

ABSTRACT:
A method and system for supplying temperature-controlled water to emergency shower and/or eyewash units (“SS/EWs”). In one embodiment, the water is circulated through a normally closed system containing a heat source such as a heat exchanger, a tank and pipes leading to the SS/EWs. Sensors in the system detect the temperature of the water and controllers regulate the amount of heat supplied to the heat exchanger to keep the temperature of the water in the system within a desired range of temperatures. A timer-controlled drainage subsystem periodically drains some or all of the water in the system. Water drained or supplied to the SS/EWs is made up by a cold water supply that feeds the heat exchanger. The system may use an alarm to signal water out of the desired temperature range, improper drainage, or water leaking from the system or being used by an SS/EW.

REFERENCES:
patent: 3521704 (1970-07-01), Bridegum
patent: 4191172 (1980-03-01), Walch et al.
patent: 5299329 (1994-04-01), Constantini
patent: 5944221 (1999-08-01), Laing et al.
patent: 7025077 (2006-04-01), Vogel

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