Controller, system and method for providing supplementing water

Details Controller, system and method for providing supplementing water Controller, system and method for providing supplementing water

2011-08-16

2011-08-16

Bastianelli, John (Department: 3753)

Fluid handling

Self-proportioning or correlating systems

Supply and exhaust type

C137S113000, C137S606000

Reexamination Certificate

active

07997295

ABSTRACT:
A supplementing water supply controller which provides water from a supplementing water supply to an outlet in preference to a main water supply, wherein if there is insufficient supplementing water to meet demand, the main water supply flows through the controller to the outlet, whereas if there is sufficient supplemental water to meet the demand, a supplementing water pump is activated and the pressure of the supplementing water is raised above a threshold level at which it moves an actuator mounted by two diaphragms to block the main water supply, so that the supplementing water can flow to the outlet. The actuator has a larger effective area at its low pressure end than at its high pressure end, so that the supplementing water threshold pressure level for moving the actuator to block the main water supply is less than the main water pressure.

REFERENCES:
patent: 3224455 (1965-12-01), Alfieri
patent: 3592215 (1971-07-01), Davis
patent: 4480653 (1984-11-01), Vanderburg
patent: 5127426 (1992-07-01), D'Archambaud et al.
patent: 2003262296 (2005-05-01), None
patent: 1182968 (1964-12-01), None
patent: 1488147 (1977-10-01), None
patent: 1488147 (1977-10-01), None

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