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Publication numberUS3650479 A
Publication typeGrant
Publication dateMar 21, 1972
Filing dateOct 26, 1970
Priority dateOct 31, 1969
Also published asDE2051822A1
Publication numberUS 3650479 A, US 3650479A, US-A-3650479, US3650479 A, US3650479A
InventorsKurt Herman Liedberg
Original AssigneeAtlas Copco Ab
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Spray gun with handle means
US 3650479 A
Abstract
A spray gun has longitudinally divided or bisected handle means one-half of which provides a fixed hand grip portion on the spray gun body while the other half is a separable hand grip portion fixedly connected to the fluid supply hose of the spray gun. The separable hand grip portion is a female coupling member which incorporates a self closing discharge valve and is quickly attachable and detachable respectively to and from a male coupling member. The latter is disposed adjacent the fixed hand grip portion on the gun body and adapted to open the discharge valve and to receive fluid from the hose when the female coupling member is attached thereto to form together with the fixed hand grip portion of a complete handle means for the spray gun.
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Description  (OCR text may contain errors)

United States Patent Liedberg [451 Mar. 21, 1972 [54] SPRAY GUN WITH HANDLE MEANS [2]] Appl. No.: 83,950

[30] Foreign Application Priority Data Oct. 31, 1969 Sweden ..149Sl/69 [52] US. Cl ..239/527, 239/600 [51] Int. Cl ..B05b 7/02 [58] Field of Search ..239/271, 290, 397, 525, 526,

766,088 1/1957 Great Britain ..239/290 1,129,881 10/1968 Great Britain ..239/600 1,160,957 8/1969 Great Britain ..239/290 Primary Examiner-Allen N. Knowles Assistant Examiner-Reinhold W. Thieme Attorney-Bauer & Goodman [5 7] ABSTRACT A spray gun has longitudinally divided or bisected handle means one-half of which provides a fixed hand grip portion on the spray gun body while the other half is a separable hand grip portion fixedly connected to the fluid supply hose of the spray gun. The separable hand grip portion is a female coupling member which incorporates a self closing discharge valve and is quickly attachable and detachable respectively to and from a male coupling member. The latter is disposed adjacent the fixed hand grip portion on the gun body and adapted to open the discharge valve and to receive fluid from the hose when the female coupling member is attached thereto to form together with the fixed hand grip portion of a complete handle means for the spray gun.

8 Claims, 5 Drawing Figures PATENTEDMAR-ZI m2 sum 1 OF 2 SPRAY GUN WITH HANDLE MEANS This invention relates generally to spray guns with handle means and more particularly to spray guns with handle equipped gun body and fluid supply through a hose connectable to the gun body by a quickly attachable and detachable coupling member. By fluid in this context is understood either pressure gas, normally in the form of compressed air for atomization and transportation of spraying material, or the spraying material itself to be atomized. Hitherto it was the compressed air hose which usually was associated with a quick release coupling and the coupling construction firstly caused an increase in weight of the spray gunand secondly reduced the manageability of the gun by reason of the increased length of metal details and the stiffening action thereof affecting the fluid hose.

It is the main object of the invention to provide a spray gun with handle means in such a combination with a quickly attachable and detachable coupling member for the fluid supply hose that the increase in weight and reduced manageability inherent in such combination are fully avoided.

For the above and other objects there is according to the invention provided a spray gun comprising a gun body, a longitudinally divided handle on said gun body for carrying and directing said gun body by hand, one half of said handle means providing a fixed hand grip portion attached to said gun body, fluid passage means in said gun body, a male coupling member in communication with said passage means and attached to said gun body adjacent said fixed hand grip portion, a hose and for supplying fluid to said spray gun, a female coupling member on said hose forming the other separable hand grip portion of said handle means, a self closing discharge valve in said female coupling member, and said female coupling member cooperating with said male coupling member to form a quickly attachable and detachable connection in the attached state of said handle means whereby said hand grip portions thereof are assembled, said discharge valve is kept open by said male member for allowing fluid flow from said hose to said passage means.

The above and other purposes of the invention will become obvious from the following description and from the accompanying drawings in which an embodiment of the invention is illustrated by way of example. It should be understood that this embodiment is only illustrative of the invention and that various modifications thereof may be made within the scope of the claims.

In the drawings,

FIG. 1 shows a longitudinal section through a spray gun according to the invention.

FIG. 2 is a side view of the handle means of the spray gun.

FIG. 3 shows a section on the line 33 in FIG. 2.

FIG. 4 is a side view of the spray gun with the female coupling member thereof taken off.

FIG. 5 is a side view shown partly in section of the female coupling member belonging to the gun in FIG. 4.

A spray gun 9 operating on compressed air is provided with a gun body 10 and a handle means 11. A spring loaded air valve 12 is urged by a helical spring onto an air valve seat. The latter is penetrated by a valve spindle 13 which for purposes of opening the air valve 12 can be depressed by a trigger 14 pivotally journaled about a pivot 8 on the gun body 10. The trigger 14 carries an inner angle member 15 for depression of the spindle 13 and simultaneous opening of the spraying material valve 16 of the spray gun 9. Downstream of the air valve 12 are arranged air passage means and an adjusting valve 17 by means of which the spray pattern of the atomized spraying material may be varied by influence of secondary air directed towards the atomized spraying material jet from the sides. Compressed air is supplied to the gun body 10 via a hose 18 which is connected to a hollow or tubular fixed hand grip portion 19 attached to the gun body 10 which fixed hand grip portion forms one half of the longitudinally bisected handle means 11. The term bisected as used herein refers to a divided handle, which may or may not be divided into two equal parts. The spraying material is supplied by a hose 20 to a female coupling member 21 to which the hose 20 is affixed. The female coupling member 21 includes a sleeve shaped part in which is arranged a discharge or check valve 23 having selfclosing ability against a seat 22 in the flow direction of the fluid conveyed by the hose 20. A helical spring 24 strives to move the discharge valve 23 onto the seat 22. The seat 22 is preferably formed by a series of sealing rings 26 which are stacked adjacent one another and kept in place by an annular plug 25. The female coupling member 21 may furthermore contain a filter 27.

In parallel relation to and in front of the tubular fixed hand grip portion 19 the gun body 10 carries a fixed male coupling member in the form of a tube 28 which is sealingly insertable into the sealing rings 26 of the female coupling member 21 to such depth that the discharge valve 24 will be lifted off its seat, FIG. 1. Via the female coupling member 21, the male coupling member 28, and inner spraying material passage means in the gun body 10 is thus established a connection between the hose 20 and a spraying material chamber 30 within the gun body from which chamber 30 spraying material is conveyed to the spray nozzle of the spray gun 9 when the paint valve 16 is open. When the female coupling member 21 is fitted on the male coupling member 28 it takes anchorage by a grooved portion 31 on the cylindrical fixed hand grip portion 19 and forms a front grip half of the bisected handle means 11. In this position the female coupling member 21 is affixed to the fixed hand grip portion 19 by a spring clip .32 which from the side is swung in towards the female coupling member 21 for clasping and keeping the latter in place axially, FIGS. 1, 3.

In operation of the spray gun 9 with the female coupling member 21 in the position shown in FIG. 1, the operator keeps the bisected handle means 11 i.e., the hand grip portions 19 and 21 conveniently in one hand and actuates the trigger 14 for maneuvering the spray gun. When the female coupling member 21 is to be released, the clip 32 is moved to the position indicated by broken lines in FIG. 3, whereupon the female coupling member 21 is drawn off axially downwardly in FIG. 1 to separated position, FIG. 5. At such instant the discharge valve 23 will close on the .seat 22 preventing fluid spill. If it is desired to spray by the same gun a plurality of different spraying materials, for example different paints, each paint container will be associated with its own hose 20 and female coupling member 21 attached thereto so that a convenient shifting of paint can be had solely by shifting the female coupling members.

As an alternative compressed air may be conveyed to the air passage means of the spray gun 9 via the hose l8 and a female coupling member similar to member 21 but attached to the hose 18. In such case the spraying material will be supplied to the spraying material passage means of the spray gun via a fixed hand grip portion mounted in front of the male coupling member of the spray gun or will be supplied by other suitable means.

What we claim is:

1. A spray gun comprising a gun body, a longitudinally divided handle means on said gun body for carrying and direct ing said gun body said handle means including a fixed grip portion attached to said gun body and a separable hand grip portion, fluid passage means in said gun body, a male coupling member in communication with said passage means and attached to said gun body adjacent said fixed hand grip portion, a hose for supplying fluid to said spray gun, a female coupling member on said hose and comprising the separable handgrip portion of said handle means, and a self closing discharge valve in said female coupling member, said female coupling member cooperating with said male coupling member to form a quickly attachable and detachable connection such that in the attached state of said handle means whereby said hand grip portions thereof are assembled, said male member maintains said discharge valve open for allowing fluid flow from said hose to said passage means.

2. A spray gun according to claim 1 in which said discharge valve comprises an annular seat in said female coupling member, a check valve, a spring biasing said check valve onto said seat, in the flow direction of said fluid, and in which said male member is a tube insertable sealingly into said female coupling member through the seat thereof for lifting said check valve off said seat.

3. A spray gun according to claim 2 in which said tube extends in parallel relation to said fixed hand grip portion.

4. A spray gun according to claim 1 in which said fixed grip portion is cylindrical and said female coupling member is anchored on said fixed grip portion by way of a longitudinally grooved portion on said female coupling member.

5. A spray gun according to claim 4 in which said fixed grip portion carries a spring clip for releasably clasping said female coupling member and arresting it axially in the attached state thereof.

6 A compressed air actuated spray gun for spraying material comprising a gun body, a longitudinally divided handle on said gun body for carrying and directing said gun body, separate air and spraying material passage means in said gun body, said handle including a hollow fixed hand grip portion attached to said gun body for communication with said air passage means therein and a separable hand grip portion, a first hose connected to said fixed hand grip for supplying compressed air therethrough to said air passage means, a male coupling member in communication with said spraying material passage means and attached to said gun body adjacent said fixed hand grip portion, a second hose for supplying spraying material to said spray gun, a female coupling member on said second hose and forming the separable hand grip portion of said handle, and a self closing discharge valve in said female coupling member, said female coupling member cooperating with said male member to form a quickly attachable and detachable connection such that in the attached state of said handle whereby said hand grip portions thereof are assembled, said male member maintains said discharge valve open for allowing spraying material flow from said hose to said spraying materialpassage means.

7. A compressed air actuated spray gun according to claim 6 in which said fixed hand grip portion is tubular, and including an air valve seat disposed at the inner end of said fixed hand grip portion in said gun body and in communication with said air passage means thereof, an air valve cooperating with said air valve seat, spring means in said fixed hand grip portion for urging said air valve onto said air valve seat, a spraying material valve in said spraying material passage means of said gun body, and means on said gun body for simultaneously opening and closing said air and spraying material valves,

8. A compressed air actuated spray gun according to claim 6 in which said fixed hand grip portion carries a spring clip for releasably clasping said female coupling member and arresting it axially in the attached state thereof.

UNITED STATES PATENT QFFKCE CERTIFICATE OF CORECTION Patent No. ,650,479

Dated March 21 1972 lmigmofls) Kurt Herman Liedherg- It is certified that error appears in mm above-ident1fied patent and tha; said Letters Patent are hereby correegec'l as shown below:

column 1 1 f-pqrtiipn" EDWARD MJLETCHERNR Attesti'ng Officer m Uanouwoc wan-nu i M. wmum mum: omcu mo o-maa

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1797209 *Jan 20, 1930Mar 17, 1931Binks Mfg CoSpraying appliance
GB488046A * Title not available
GB766088A * Title not available
GB1129881A * Title not available
GB1160957A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4023718 *Mar 14, 1975May 17, 1977Revlon-Realistic Professional Products, Inc.Sealing and closure structure for a spray dispensing device
US5078762 *Mar 5, 1990Jan 7, 1992Hung Chun IFilter structure for an air-spray gun
US5284299 *Aug 24, 1992Feb 8, 1994Ransburg CorporationPressure compensated HVLP spray gun
US5344074 *Feb 11, 1993Sep 6, 1994Ecolab Inc.Dispensing apparatus having a removable variable proportioning and metering device
Classifications
U.S. Classification239/527, 239/DIG.140, 239/600
International ClassificationB05B7/24, B05B7/12
Cooperative ClassificationY10S239/14, B05B7/12
European ClassificationB05B7/12