System for dispensing multiple component chemical sprays

Abstract

A system for dispensing a plurality of chemicals includes a respective storage tank for each chemical. A respective metering, rotary positive displacement pump is in hydraulic communication at an inlet thereof with an outlet of each tank. An outlet of each pump is connected to a respective discharge hose. At least one heater is in thermal contact with each discharge hose. At least one temperature sensor is provided for measuring a temperature of each chemical in each respective discharge hose. A pressure sensor is provided for measuring pressure at an inlet end and at an outlet end of each discharge hose. A processor is in signal communication with each temperature sensor, each pressure sensor, a metering signal output of each pump and in control communication with each heater. The processor is programmed to operate each heater to maintain a temperature of each chemical such that a selected difference between pressure is measured between the inlet end and the discharge end of each discharge hose when each respective chemical is moved therethrough.

Dependencies are inferred from the claim text.