Automatic pump control system

Details Automatic pump control system Automatic pump control system

1987-09-11

1988-08-23

Shoop, Jr., William M.

Electrical transmission or interconnection systems

Switching systems

Condition responsive

307116, 307117, 417 36, 73304C, 340620, 340603, H01H 3518

Patent

active

047663294

ABSTRACT:
A water pump control system, such as for a boat, including a battery operated main motor-and-pump unit and a backup motor-and-pump unit. A pump turn-on transistor operates a relay to turn on the main motor-and-pump unit when the water level rises to a high level. A touch switch may be used to turn on the pump turn-on transistor independent of the water level. A pump turn-off transistor, which is turned on by the relay, keeps the main motor-and-pump unit on until the water level drops to a low water level. A backup motor-and-pump unit comes on if the main motor-and-pump unit has not come on after the pump turn-on transistor has been turned on.

REFERENCES:
patent: 3553575 (1971-01-01), Shea
patent: 3800205 (1974-03-01), Zalar
patent: 4061442 (1977-12-01), Clark et al.
patent: 4171932 (1979-10-01), Miller
patent: 4205237 (1980-05-01), Miller
patent: 4213340 (1980-07-01), Cheng
patent: 4586033 (1986-04-01), Andrejasich
patent: 4600844 (1986-07-01), Atkins
patent: 4628302 (1986-12-01), Barr et al.

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