Sump drain system

Details Sump drain system Sump drain system

1982-02-25

1983-12-27

Look, Edward K.

Pumps

Condition responsive control of pump drive motor

Responsive to accumulation of pumped liquid in receiver

417 89, 417181, F04F 548

Patent

active

044228295

ABSTRACT:
A drain system for a sump, including an electrically powered sump pump normally operable in response to the water level in the sump to drain the sump when the level reaches a predetermined point, and a water powered pump driven by a source of water under pressure and which operates in the event of an electrical power failure or in the event of a failure of the electrically driven pump.

REFERENCES:
patent: 2763281 (1956-09-01), Morgan
patent: 3963376 (1976-06-01), Miskin
patent: 3972647 (1976-08-01), Niedermeyer
patent: 4060341 (1977-11-01), Tremain et al.

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