Benjamin R Evans

US Patent:

20190145393, May 16, 2019

Filed:

Sep 25, 2018

Appl. No.:

16/140828

Inventors:

- Elmira Heights NY, US
Benjamin H. Evans - Hammondsport NY, US
Michael Robert DePue - Greene NY, US

International Classification:

F04B 17/04
F04B 35/04
F04B 49/03

Abstract:

A control unit for a solenoid pump, the solenoid pump including: an inlet port, an outlet port, and a first through-bore connecting the inlet and outlet ports; a plunger disposed within the first through-bore and including a second through-bore; a spring arranged to urge the plunger toward the outlet port; a solenoid coil disposed about a portion of the plunger and arranged to displace the plunger toward the inlet port in response to direct current coil power applied to the solenoid coil, the control unit including a microcontroller operatively arranged to control the solenoid coil, a first transistor operatively arranged to receive an external signal and communicate the signal to the microcontroller to control the solenoid coil, and a second transistor, arranged between the microcontroller and the solenoid coil, the second transistor operatively arranged to energize and de-energize the solenoid coil in response to the microcontroller.