Adjustable liquid level control for pumps

Details Adjustable liquid level control for pumps Adjustable liquid level control for pumps

1979-08-13

1981-07-14

Hornsby, Harvey C.

Pumps

Condition responsive control of pump drive motor

Responsive to accumulation of pumped liquid in receiver

417 44, F04B 4910

Patent

active

042784026

ABSTRACT:
A pressure responsive pumping system comprising a motor driven impeller pump, a pressure responsive switch controlling the pump motor, and a pressure-sensing device comprising a tube extending through a side wall of the pump casing and slidable substantially radially thereof, a port adjacent the inner end of the tube, and a conduit connecting the outer end of the tube to the switch. More specifically an impeller pump having a flat end wall, an opening in its peripheral wall, a channel at the inner side of the end wall in alignment with the opening, and a tube slidable longitudinally through the opening and along said groove having a port at its inner open end, or at a side thereof adjacent its inner closed end.

REFERENCES:
patent: 2732804 (1956-01-01), Sadler et al.
patent: 3043225 (1962-07-01), Nielsen
patent: 3502029 (1970-03-01), Halladay
patent: 3981619 (1976-09-01), Mitter

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