Pumps – Condition responsive control of pump drive motor – Responsive to accumulation of pumped liquid in receiver
Patent
1979-03-30
1981-09-15
Croyle, Carlton R.
Pumps
Condition responsive control of pump drive motor
Responsive to accumulation of pumped liquid in receiver
F04B 4904
Patent
active
042894514
ABSTRACT:
A multi level indicator and control system for controlling upper and lower liquid level limits in a tank includes a first transparent column connected in selective communication with the liquid in the tank and extending between one of the limits of desired control and a second transparent column disposed below the other limit of desired control. A plurality of reed switches are disposed at different levels within the columns and each is magnetically responsive to a float confined to movement within a narrow range of movement adjacent the switch, for controlling the switches in response to the respective level of liquid in the tank. Valves are provided for selectively cutting off communication of the column with the tank so that the column may be drained and the switches checked or replaced when needed. Extended vent tubes may be provided for venting the column when the column is connected to a tank of a height many times that of the column.
REFERENCES:
patent: 624779 (1899-05-01), Ford
patent: 654631 (1900-07-01), Hays
patent: 2423397 (1947-07-01), Loumiet
patent: 2682026 (1954-06-01), Mesh et al.
patent: 2956581 (1960-10-01), Pearson
patent: 3123004 (1964-03-01), Irvin et al.
patent: 3136871 (1964-06-01), Barletta
patent: 4186419 (1980-01-01), Sims
Croyle Carlton R.
Look Edward
National Semiconductor Corporation
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