Portable low-pressure airless sprayer

Patent metadata

Field	Value
Publication number	US-12521740-B2
Application number	US-202017124889-A
Country	US
Kind code	B2
Filing date	Dec 17, 2020
Priority date	Dec 23, 2019
Publication date	Jan 13, 2026
Grant date	Jan 13, 2026

Abstract

A handheld portable spraying system includes a fluid source having a plurality of different fluids and a fluid container configured to separately contain the plurality of different fluids. The handheld portable spraying system also includes a fluid pathway configured to carry the plurality of different fluids from the fluid source through an outlet of the handheld portable spraying system, and a fluid conveyance system configured to cause the plurality of different fluids to flow along the fluid pathway. The handheld portable spraying system further includes a controller configured to generate a control signal to control the flow of the plurality of different fluids along the fluid pathway.

First claim

What is claimed is:

1 . A handheld portable airless paint spraying system comprising:
a portable body; at least one battery; at least one paint source removably coupled to and carried on the portable body, the at least one paint source containing a plurality of paints, each paint, of the plurality of paints, having a different color than another paint in the at least one paint source; a spray tip; a paint pathway configured to carry the plurality of paints to the spray tip; operable to pressurize at least two paints, of the plurality of paints, to generate a pressurized flow along the paint pathway; a sensor retaining device; a removable color sensor removably received by the sensor retaining device, wherein, when received by the sensor retaining device, the removable color sensor is carried on the handheld portable airless paint spraying system; a wireless communication system that wirelessly receives, from the removable color sensor, a sensor signal indicative of a target color; and a control system powered by the at least one battery to receive the sensor signal indicative of the target color and to generate a control signal, based on the target color, to control a respective flow rate of each paint, of the at least two paints, along the paint pathway to generate a mixed paint sprayed from the spray tip, the mixed paint having a color resultant from a mixture of the at least two paints of the plurality of paints.

2 . The handheld portable airless paint spraying system of claim 1 , wherein the at least one paint source comprises a plurality of compartments, each respective compartment, of the plurality of compartments, is configured to separately contain therein a respective paint of the plurality of paints.

3 . The handheld portable airless paint spraying system of claim 2 , wherein the pressure source is configured to apply pressure to the plurality of compartments, the pressure source comprising at least one of a pump, a motor, or a pressure vessel.

4 . The handheld portable airless paint spraying system of claim 1 , wherein the at least one paint source comprises a plurality of collapsible paint containers configured to collapse in response to pressure generated by the pressure source, and each container, of the plurality of collapsible paint containers, contains a different paint of the plurality of paints.

5 . The handheld portable airless paint spraying system of claim 4 , wherein the pressure source comprises a pressure vessel containing a liquified gas and configured to apply a pressure, that is less than 3000 pounds per square inch (PSI), to one or more containers, of the plurality of collapsible paint containers, to cause the at least two paints to flow along the paint pathway.

6 . The handheld portable airless paint spraying system of claim 5 , wherein the pressure vessel comprises a replaceable carbon dioxide (CO 2 ) cannister containing liquified CO 2 , and the pressure is more than 100 PSI.

7 . The handheld portable airless paint spraying system of claim 6 , wherein the pressure is between approximately 700-800 PSI.

8 . The handheld portable airless paint spraying system of claim 1 , wherein, when removed from the sensor retaining device, the removable color sensor is positionable to optically detect a surface that is external to the system, wherein the target color comprises a color on the surface.

9 . The handheld portable airless paint spraying system of claim 1 , wherein the sensor retaining device is positioned proximate a bottom of the handheld portable airless paint spraying system.

10 . The handheld portable airless paint spraying system of claim 9 , wherein the sensor retaining device includes a structure comprising one or more projections that extend at least partially over the removable color sensor when the removable color sensor is carried on the handheld portable airless paint spraying system.

11 . The handheld portable airless paint spraying system of claim 9 , wherein the sensor retaining device is positioned on a housing of the at least one paint source.

12 . The handheld portable airless paint spraying system of claim 11 , wherein the housing comprises a first mating feature and the sensor retaining device comprises a second mating feature configured to mate to the first mating feature.

13 . The handheld portable airless paint spraying system of claim 12 , wherein the first mating feature and the second mating feature each comprise corresponding threads.

14 . The handheld portable airless paint spraying system of claim 11 , wherein the sensor retaining device is positioned proximate a bottom of the housing of the at least one paint source.

15 . A handheld airless spray gun comprising:
a coupler configured to fixedly couple a liquid source to the handheld airless spray gun, wherein the coupler is configured to support the liquid source such that the liquid source is carried on the handheld airless spray gun; a spray tip; a liquid pathway configured to carry a plurality of different liquids from the liquid source to the spray tip; a pressure source disposed within the handheld airless spray gun and configured to pressurize at least two liquids, of the plurality of different liquids, to generate a pressurized flow along the liquid pathway; a sensor retaining device; a removable color sensor removably received by the sensor retaining device, wherein, when received by the sensor retaining device, the removable color sensor is carried on the handheld airless spray gun; a wireless communication system that wirelessly receives, from the removable color sensor, a sensor signal indicative of a target color; and a control system configured to receive the sensor signal indicative of the target color and to generate a control signal, based on the target color, to control a respective flow of each liquid, of the at least two liquids, along the liquid pathway to generate a mixed liquid sprayed from the spray tip, the mixed liquid having a resultant from a mixture of the at least two liquids.

16 . The handheld airless spray gun of claim 15 , wherein the control signal indicates a ratio at which each liquid, of the plurality of different liquids, is to flow along the liquid pathway.

17 . The handheld airless spray gun of claim 16 , wherein the plurality of different liquids comprises a plurality of differently colored paints, and the control signal indicates a color of paint to be sprayed by the handheld airless spray gun.

18 . The handheld airless spray gun of claim 15 wherein the removable color sensor is configured to sense a surface and generate the sensor signal indicative of a color of the surface, wherein the control signal controls a flow of each liquid, of the plurality of different liquids, along the liquid pathway to generate a paint to be sprayed by the spray gun, based on the sensor signal indicative of the color of the surface.

19 . The handheld airless spray gun of claim 15 , wherein the pressure source is configured to generate a pressure sufficient to cause a plurality of collapsible liquid containers to collapse and cause the at least two liquids, of the plurality of different liquids, to flow along the liquid pathway.

20 . The handheld airless spray gun of claim 19 , wherein the pressure source comprises a replaceable carbon dioxide (CO 2 ) cannister containing liquified CO 2 , the replaceable CO 2 cannister configured to apply a pressure of approximately 700-800 (pounds per square inch (PSI) to at least one container, of the plura

Assignees

• Wagner Spray Tech Corp

Inventors

• Kundem Jeshwanth Durga Sagar
• Fideler Brian Lee
• Kieffer Joseph W
• Jeltsch Thomas
• Taletovic Mujo

Classifications

• G01J3/463

  Colour matching · CPC title

• B01F33/8442

  using a computer for controlling information and converting it in a formula and a set of operation instructions, e.g. on the point of sale · CPC title

• B05B9/0833

  comprising a compressed gas container, e.g. a nitrogen cartridge · CPC title

• B05B12/1418

  for supplying several liquids or other fluent materials in selected proportions to a single spray outlet (controlling ratio of two or more flows of fluid G05D11/02) · CPC title

• B01F33/846

  using stored recipes for determining the composition of the mixture to be produced, i.e. for determining the amounts of the basic components to be dispensed from the component receptacles · CPC title