# US 6,571,805 B2 · Multi-container pressure washer and related product selecting valve > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 6,571,805 B2 - Document ID: US6571805B2 - Status: Granted - Kind: B2 - Application number: 09/999,421 - Filed: 2001-11-15 - Published: 2002-03-21 - Granted: 2003-06-03 - Earliest claimed: 1999-02-08 - Assignees: Briggs & Stratton Power Products Group, LLC - Inventors: Herb Hoenisch; Peter Nushart; Wes Sodemann - Web page: https://patentgrep.com/patent/US6571805B2 ## CPC - B08B 3/026: {Cleaning by making use of hand-held spray guns; Fluid preparations therefor} - B08B 2203/0217: Use of a detergent in high pressure cleaners; arrangements for supplying the same - B08B: CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL ## Abstract A pressure washer includes a chassis as well as a liquid pump, a pump-driving prime mover, plural chemical product containers and a product selecting valve, all supported by the chassis. Each of the containers is attached to a separate valve conduit extending to the valve and the valve is connected to a device conduit extending to the mixing device. A distributor is mounted for movement with respect to the valve body and has a channel for selectively connecting one of the valve conduits to the device conduit. The user may thereby use the pressure washer to dispense any one of plural solutions. A fresh water container facilitates “wash out” of the valve and device conduit before switching to another chemical product. ## Claims ### Claim 1 A pressure washer comprising: a single pump fluidly connected to a primary water source; a mixing device fluidly connected to the pump; a valve including a device conduit fluidly connected to the mixing device; first and second containers having respective first and second chemical products therein, a first conduit fluidly connecting the first container to the valve; a second conduit fluidly connecting the second container to the valve; and a wash out assembly including a third container having water and a third conduit fluidly connecting the third container to the valve, wherein the valve is fluidly connected between the first, second, and third containers and the mixing device, the valve being adjustable to selectively place one of the first, second, and third containers in fluid flow communication with the mixing device through the device conduit such that the valve can be adjusted to fluidly connect the wash out assembly with the mixing device to flush out the valve and device conduit. ### Claim 2 (depends on 1) The pressure washer of claim 1, wherein the pump is fluidly connected to a water source. ### Claim 3 (depends on 1) The pressure washer of claim 1, wherein the mixing device is a venturi-type eductor mixer. ### Claim 4 (depends on 1) The pressure washer of claim 1, further comprising a chassis, wherein the pump, valve, and container are supported by the chassis. ### Claim 5 (depends on 1) The pressure washer of claim 1, wherein the chemical product of the first container is one of a detergent product, a car wash product, a deck wash product, an automobile wax product, and a multipurpose cleaning product, and the chemical product of the second container is a different one of a detergent product, a car wash product, a deck wash product, an automobile wax product, and a multipurpose cleaning product. ### Claim 6 (depends on 1) The pressure washer of claim 1, wherein the valve includes a valve body that is connected to the first, second, and third valve conduits and a distributor that is connected to the device conduit and mounted for movement relative to the valve body. ### Claim 7 (depends on 6) The pressure washer of claim 6, wherein the distributor includes a channel for selectively fluidly connecting one of the first, second, and third container to the mixing device. ### Claim 8 (depends on 6) The pressure washer of claim 6, wherein the valve includes a position retention mechanism between the distributor and the valve body to maintain the distributor at a selected position. ### Claim 9 (depends on 6) The pressure washer of claim 6, further comprising a pump driving prime mover that drives the pump and includes a throttle, the pressure washer further comprising a control console including a product selector device and a pressure selector device, wherein the product selector device is coupled to the control console and the distributor and adjusts the valve, and the pressure selector device is coupled to the control console and the throttle of the pump driving prime mover and adjusts the speed of the motor and the pump. ### Claim 10 (depends on 9) The pressure washer of claim 9, wherein the product selector device is a manually adjusted rotary knob. ### Claim 11 (depends on 9) The pressure washer of claim 9, wherein the pressure selector device is a manually linearly-actuated lever. ### Claim 12 A method for washing out a pressure washer that includes a single pump fluidly connected to a primary water source, a mixing device that is fluidly connected to the pump, a valve having a device conduit fluidly connected to the mixing device, first and second containers having respective first and second chemical products therein, a first conduit fluidly connecting the first container to the valve, and a second conduit fluidly connecting the second container to the valve, the method comprising: providing a wash out assembly including a third container having water and a third conduit fluidly connecting the third container to the valve; adjusting the valve to direct the first chemical product from the first container, through the first conduit, valve, and device conduit, and into the mixing device; adjusting the valve to direct water from the wash out assembly, through the valve and device conduit, and into the mixing device to wash out the first chemical product from the valve and the device conduit; adjusting the valve to direct the second chemical product from the second container, through the second conduit, valve, and device conduit, and into the mixing device; pumping water from the primary water source; and mixing the second chemical product with the water from the primary water source within the mixing device. ### Claim 13 (depends on 12) The method of claim 12, further comprising mixing within the mixing device one of the first chemical product from the first container, the second chemical product from the second container, and the water from the washout assembly with water being pumped by the pump from a water source.