Patent ID: 9447536
Filing Date: 2016-09-20
CPC Classification: A47L,D06F,F04B

Claim Text:
1. A chemical dispensing system comprising: a first peristaltic pump including a first length of elastic tubing, a first rotor that pumps fluid through the first length of elastic tubing by progressively squeezing and releasing consecutive portions of the tubing, a first motor that selectively rotates the first rotor, a first processor operatively coupled to the first motor and that controls the first motor, and a first memory operatively coupled to the first processor and storing first pump calibration data; a second peristaltic pump including a second length of elastic tubing, a second rotor that pumps fluid through the second length of elastic tubing by progressively squeezing and releasing consecutive portions of the tubing, a second motor that selectively rotates the second rotor, a second processor operatively coupled to the second motor and that controls the second motor, and a second memory operatively coupled to the second processor and storing second pump calibration data; and a system controller including a third processor in communication with the first processor and the second processor via a data bus, the third processor configured to send a dispense product message to either of the first processor or the second processor indicating an amount of a product to be dispensed by the corresponding peristaltic pump, wherein the first processor and the second processor are each configured to, in response to receiving the dispense product message from the third processor, determine a motor activation period based on the corresponding pump calibration data and the amount of the product to be dispensed, and activate the corresponding motor for the motor activation period to dispense the amount of the product to be dispensed.