Multiple recirculating toilet

Details Multiple recirculating toilet Multiple recirculating toilet

1972-04-13

1976-11-30

Freeh, William L.

Pumps

Condition responsive control of pump drive motor

Having timer or delay means

417307, 417288, F04B 4900

Patent

active

039946282

ABSTRACT:
A pumping system for a plurality of recirculating toilets sharing a common tank is described. A variable volume pump has a by-pass valve which is controlled by a pressure sensor in the flush line, to prevent excessive fluid pressure at the toilets. For applications in which the total number of toilets in the system requires a flow exceeding the output of a single pump, additional, substantially identical pumps are provided. A time delay circuit is connected to a pressure switch for energizing a second pump, if the fluid pressure at the toilets does not exceed a predetermined pressure within a set time interval.

REFERENCES:
patent: 2612838 (1952-10-01), Nichols
patent: 2617361 (1952-11-01), Neal
patent: 2797846 (1957-07-01), Reed
patent: 2812110 (1957-11-01), Romanowski
patent: 2945445 (1960-07-01), Smith et al.
patent: 3229639 (1966-01-01), Highnutt et al.
patent: 3639081 (1972-02-01), Gray et al.

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