Graco Minnesota Inc.

Eric J Mjolhus

Anna M Hegdahl

Benjamin J Paar

Andrew M Grunloh

Andrew J Klaphake

Suresha Saragur Nijaguna

Jesse L Lanie

Igor V Radzyuk

Walter L Franklin, Iii

Benjamin R Stassen

Christopher J Stack

A system for harvesting energy from a lubrication event includes a fluid pump, a fluid injector, an energy harvesting device, a wireless transmitter, and a controller unit. The fluid injector receives fluid from the fluid pump. The fluid injector is connected to the energy harvesting device, which is configured to produce electrical energy in response to a firing of the fluid injector. Electrical energy produced by the energy harvesting device powers the wireless transmitter, which is configured to transmit a wireless signal. The wireless signal indicates that the fluid injector fired. The wireless signal is received by the controller unit, which controls the fluid pump.

Lubrication injector with energy harvesting

A motor control system for a lubricant pump motor comprises a pump system power input, a motor drive, a current sensor, a lubrication controller, and a drive controller. The pump system power input is configured to supply system power. The motor drive is configured to drive the lubricant pump motor using the system power. The current sensor is disposed between the pump system power input and the motor drive to sense an input current of the system power. The lubrication controller configured to provide motor activation signals. The drive controller is disposed to receive the motor activation signals via an isolated digital input, and to control the motor drive as a function of the sensed input current and a user-defined current set-point, in response to the activation signals.

Electronic pump motor control

Growing community of inventors

Ramsey, MN, United States of America

Eric J Mjolhus