Protection device and sump pump

Details Protection device and sump pump Protection device and sump pump

1979-03-01

1982-01-05

Tolin, Gerald P.

Pumps

Motor driven

Electric or magnetic motor

200 83R, 200 84B, H01H 3518

Patent

active

043091571

ABSTRACT:
A protection column is employed about a sump pump to exclude liquid and foreign matter in the sump from entering the pump interior until a time just prior to priming and activation of the pump. The column has a closed bottom portion serving as a vessel and permitting the column to float as the liquid level rises in the sump. The upper part of the column fits about the pump to act as a guide and has a series of vertical slots. The column floats until the bottom of the column strikes the bottom of the sump pump, which prevents the column from rising further. As the water level continues to rise in the sump, water enters the column through the slots, causing the column to sink to the bottom of the sump and permitting the liquid to rise to a level in the pump commensurate with the level elsewhere in the sump, thereby priming the pump.

REFERENCES:
patent: 2918016 (1959-12-01), Olson
patent: 3130023 (1964-04-01), Hasselberg
patent: 3992130 (1976-11-01), Childress
patent: 4087663 (1978-05-01), Sawyer

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