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Publication numberUS2410532 A
Publication typeGrant
Publication dateNov 5, 1946
Filing dateMar 4, 1944
Priority dateMar 4, 1944
Publication numberUS 2410532 A, US 2410532A, US-A-2410532, US2410532 A, US2410532A
InventorsTessier Joseph D
Original AssigneeTessier Joseph D
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Appliance for paint sprayers
US 2410532 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)


Patented Nov. 5, 1946 UNITED STATES' PATENT OFFICE! APPLIANCE FOR PAINT SPRAYERS Joseph D. Tessier, Worcester, Mass.

Application March 4, 1944, Serial No. 524,993

4 Claims. 1

This invention relates to an improvement which may be applied to existing paint sprayers or which may be built into the sprayer during manufacture thereof.

Objects of the invention include the provision of a device for blowing splattering paint and paint drops directly onto the surface being painted, this device being arranged in such a way as to carry all air-borne paint to the surface being painted and to thereby eliminate the hazard of paint sickness and poisoning to the operator.

Further objects of the invention include the provision of a funnel-like appliance, having double spaced walls, which may be applied to any existing paint sprayer and which is supplied with compressed air for surrounding the stream of paint issuing from the sprayer so as to produce a complete air envelope which will throw all the paint splattering from the surface being worked on and all paint fog due to the sprayer in a direction to apply this splattering to the painted surface, whereby all the paint is used for the purpose intended and cannot splatter or fill the air with paint drops, completely avoiding the common hazard accompanying the conventional paint sprayer that the operator breathes in the paint and thereby becomes poisoned.

Other objects and advantages of the invention will appear hereinafter.

Reference is to be had to the accompanying drawing,inwhich Fig. 1 is a view in elevation of a paint sprayer showing the new appliance in section; and

Fig. 2 is a partial front view of the appliance showing it in position for operation.

The conventional :paint sprayer comprises a handle l having means such as a pipe l2 for leading the paint to the valve, not shown, the valve rod being shown at [4, operation being had by means of a trigger IS.

A pipe l8 leading from a compressed air tank supplies compressed air to the valve so that when the valve is opened by retracting the trigger the air forces the paint through the nozzle of the sprayer. These sprayers are well known in the art and further description is deemed to be unnecessary.

The present invention involves the use of a supplementary nozzle 20 which is elongated as compared to the conventional nozzle and which takes the place thereof being secured to the paint sprayer in the barrel 22 by means of screw threads or any other desired means, not shown.

A funnel is secured in any way desired to the barrel 22 or nozzle 20 and this funnel comprises a pair of spaced walls 24, 26, which are in the form of a pair of spaced funnels, funnel 26 being smaller in diameter than funnel 24. This construction forms an air chamber between the two funnels as at 28, this chamber being continuous between the walls of the funnels and flaring from a closed end 30 to the open end 32, the latter being more or less in line with the tip 34 of the paint sprayer nozzle.

I provide a line 36 leading from the air supply through a separate cut-ofi' valve 38 operated by a handle 40 and proceeding through a pipe 42 to the space 28 between the funnels asshown at 44. In order to evenly disburse theair 360 around the funnel at the open end thereof, i provide a baflie 46 which is spiral in form and surrounds the iimer funnel 26. This baflie is slightly spaced from the interior side of the outer wall 24, thus leaving a small continuous space for issuance of the air. By this means the blast of air is prevented from issuing at one point only and is carried evenly around the entire chamber 28.

I may also provide a. skirt 46' surrounding the open end of the funnels and spaced therefrom, this skirt resulting in an induction of air from the surrounding atmosphere into the region of the air blast.

In the use of the device the valve 38 may be opened by the handle 40 and the trigger I6 being retracted, the paint issuing from the nozzle will be completely surrounded by an air blast which will throw all defusing paint drops against the wall being painted and which is wide enough, because of its conical form to pick up all splattering paint and throw it back against the surface being painted; Whenever the trigger I6 is released the conical air blast will still continue and may be used to smooth the paint on the wall until such timeas the valve 38 is actuated to close this air pressure.

It will be seen that the present device may be used with an existing paint sprayer or may be manufactured with the paint sprayer and it has been found that no paint will get into the air exterior of the funnels so that the operator is completely protected and may paint without using a mask and without any danger of inhaling paint-laden air. In addition a smooth paint job is obtained by the use of the appliance because of the fact that the air blast tends to render the layer of paint applied into a. uniform thickness.

3 Having thus described my invention and the advantages thereof, I do not wish to be limited to the details herein disclosed, otherwise than as set forth in the claims, but what I claim is:

1. In a device of the class described, a paint sprayer, an elongated nozzle therefor, a funnel surrounding the nozzle, said funnel having a pair of spaced walls forming an air chamber therebetween, means supplying air to said chamber, means providing for a substantially uniform exit for the air all around the funnel, said means including a spiral baflle between the walls of the funnel, said baflle stopp ng short of one wall, to provide a narrow continuous opening between the walls.

2. A paint sprayer comprising a nozzle, a double-walled funnel about the nozzle, the walls being spaced to form a chamber, aspiral bathe in the chamber means supplying air to the chamber, said baflle having a. height less than the width of the space between the walls to provide an even air flow from the chamber in conical form about the nozzle.

3. The device of claim 2 wherein the battle has an end adjacent the air supply.

4. The device of claim 2 wherein the baffle has an end adjacent the air supply, said bafile gradually extending farther from the air supply as it progresses about the funnel in the air chamber.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2478557 *Sep 13, 1947Aug 9, 1949Bell Walter HSprayer and sprayer head for fluent coating materials
US2504216 *Dec 23, 1944Apr 18, 1950Morton Walter N TSpray gun
US2514748 *Feb 5, 1946Jul 11, 1950Di Stefano AlbertWaste spray collector
US2554829 *Nov 24, 1948May 29, 1951Super Spray Paint CorpSpray device
US2571874 *Jan 24, 1949Oct 16, 1951Stuk O Rite IncSpray gun for applying granular materials
US2597573 *Oct 3, 1949May 20, 1952De Groff Jerald SSpraying apparatus
US2814530 *Sep 2, 1955Nov 26, 1957Carlos PortilloSpraying apparatus
US2851307 *Nov 10, 1954Sep 9, 1958Ionic Electrostatic CorpElectrostatic deposition apparatus
US3635401 *Oct 27, 1969Jan 18, 1972Gourdine Coating Systems IncElectrostatic spraying methods and apparatus
US3857511 *Jul 31, 1973Dec 31, 1974Du PontProcess for the spray application of aqueous paints by utilizing an air shroud
US4106697 *Nov 16, 1976Aug 15, 1978Ppg Industries, Inc.Spraying device with gas shroud and electrostatic charging means having a porous electrode
US4200234 *Oct 20, 1978Apr 29, 1980General Motors CorporationHot air shroud for paint spray gun
US4218019 *Aug 15, 1979Aug 19, 1980General Motors CorporationAir shroud device for paint spray guns
US4767056 *Apr 20, 1987Aug 30, 1988Kris DemetriusSpray guard
US5002227 *Feb 3, 1989Mar 26, 1991Neumo Grundbesitz-GmbhPlant protection discharge apparatus
US5452856 *Dec 10, 1993Sep 26, 1995Davidson Textron, Inc.Spray wand with spray fan control
US6318642 *Dec 22, 1999Nov 20, 2001Visteon Global Tech., IncNozzle assembly
US7150412Aug 1, 2003Dec 19, 2006Clean Earth Technologies LlcMethod and apparatus for electrostatic spray
US7478763 *May 4, 2004Jan 20, 2009Itw Gema GmbhSpray coating device for spraying coating material, in particular coating powder
US7524538Nov 15, 2002Apr 28, 2009Jes Tougaard GramPainting and hardening of the paint on moulded parts in a tool with a turnable mould part
US20050001061 *May 4, 2004Jan 6, 2005Felix MauchleSpray coating device for spraying coating material, in particular coating powder
US20050003100 *Nov 15, 2002Jan 6, 2005Gram Jes TougaardPainting and hardening of the paint on moulded parts in a tool with a turnable mould part
EP1118387A2 *Dec 20, 2000Jul 25, 2001Ford Global Technologies, Inc.Nozzle assembly
WO2003049929A1 *Nov 15, 2002Jun 19, 2003Jes Tougaard GramPainting and hardening of the paint on moulded parts in a tool with a turnable mould part
U.S. Classification239/291, 134/37
International ClassificationB05B7/02, B05B15/04, B05B1/28, B05B7/06
Cooperative ClassificationB05B7/066, B05B1/28, B05B15/0431
European ClassificationB05B7/06C3, B05B1/28, B05B15/04C