US 11,685,343 B2
Product metering system
David R. Krause, DePere, WI (US); Donald J. Pansier, Green Bay, WI (US); and Daniel J. Mathys, Pulaski, WI (US)
Assigned to Cleaning Systems, Inc., De Pere, WI (US)
Filed by Cleaning Systems, LLC, DePere, WI (US)
Filed on Dec. 7, 2020, as Appl. No. 17/113,375.
Application 17/113,375 is a continuation of application No. 15/942,993, filed on Apr. 2, 2018, granted, now 10,857,982.
Application 15/942,993 is a continuation of application No. 15/619,740, filed on Jun. 12, 2017, granted, now 9,932,018, issued on Apr. 3, 2018.
Application 15/619,740 is a continuation of application No. 13/011,493, filed on Jan. 21, 2011, granted, now 9,676,371, issued on Jun. 13, 2017.
Application 13/011,493 is a continuation in part of application No. 12/203,510, filed on Sep. 3, 2008, abandoned.
Prior Publication US 2021/0086728 A1, Mar. 25, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. B60S 3/04 (2006.01); F16K 31/06 (2006.01)
CPC B60S 3/04 (2013.01) [F16K 31/0675 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A vehicle wash for washing a vehicle, comprising:
a first pump fluidly connected to a first product supply and a second pump fluidly connected to a second product supply, wherein the first product supply is comprised of a liquid, a powder, a particulate material, a gas, a fluid, or a combination thereof, and wherein the second product supply is comprised of a liquid;
an first electronic control valve fluidly connected to the first pump, wherein the first electronic control valve operates at a first open/close ratio that dispenses the first product supply at a first flow rate, wherein the first open/close ratio is comprised of an on state for an on period of time and an off state for an off period of time, and wherein the first open/close ratio produces a first flow rate of the first product supply;
a second electronic control valve fluidly connected to the second pump, wherein the second electronic control valve operates at a second open/close ratio that dispenses the second product supply at a second flow rate, wherein the second open/close ratio is comprised of an on state for an on period of time and an off state for an off period of time, and wherein the second open/close ratio produces a second flow rate of the second product supply;
a nozzle fluidly connected to the first electronic control valve and the second electronic control valve to dispense the first product supply and the second product supply to the vehicle; and
a control unit in communication with the first electronic control valve and the second electronic control valve, the control unit is programmed to control the first open/close ratio and the second open/close ratio, wherein the control unit calculates the first open/close ratio needed to produce the first flow rate of the first product supply utilizing a pressure of the first product supply from the first pump, and wherein the control unit calculates the second open/close ratio needed to produce the second flow rate of the second product supply utilizing a pressure of the second product supply from the second pump.