CA2145129C - Aerosol spray texture apparatus and method for a particulate containing material - Google Patents
Aerosol spray texture apparatus and method for a particulate containing material Download PDFInfo
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- CA2145129C CA2145129C CA 2145129 CA2145129A CA2145129C CA 2145129 C CA2145129 C CA 2145129C CA 2145129 CA2145129 CA 2145129 CA 2145129 A CA2145129 A CA 2145129A CA 2145129 C CA2145129 C CA 2145129C
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Abstract
An aerosol dispenser to dispense a spray texture coating material against a ceiling. The container has therein a spray texture material with particulate matter therein. There is a compressed gas which is inert, relative to the spray texture material, and which is positioned in the upper part of the chamber. A discharge valve is depressed to permit the pressurized spray texture material to flow upwardly through a stem to be discharged through the valve and against the ceiling.
Description
AEROSOL SPRAY TEXTURE APPARATUS
AND METHOD FOR A PARTICULATE CONTAINING MATERIAL
Backaround of the Invention Field of the Invention The present invention relates to a texture spraying apparatus to discharge a texture material onto a surface, and more particularly to an aerosol spray texture apparatus particularly adapted for discharging a texture material having Darticulate matter contained therein.
:.5 9ac cl ground Art There are in the prior art various devices to spray a texture ;naterial onto a wall surface or a ceiling. :epencii~g upon the nature of the ccmposit-'cn and ct:er factors, the material that ~0 '_s spraveci -nto t he surface as a coating can have varying dearees of "roughness".
In some instances, the somewhat roughened texture _s achieved by utilizing a textured composit:cn that orms '_nto droplets when it is 25 dispensed, with the material then hardening with these droplets providing the textured surface. In other instances, solid particulate material is mixed with the liquid texture materialso that with the particulate material being deposited with 30 the hardenable liquid material on the wall surface, these particles provide the textured surface.
There are in the prior art spray texture devices using an aerosol container which contains the texture material under pressure and from which the textured material is discharged onto a surface. Such aerosol dispensers are commonly used when there is a relatively small surface area to be covered with the spray texture material.
'~-do such spray texture devices are disclosed in U.S. patent 5,037,011, issued August 6, 1991, and more recently U.S. patent 5,188,263, issued =ebruary 23, 1993 with John R. Woods being named '_nventor of both of these patents.
However, such prior art aerosol spray texture devices ::ave not been properly adapted to deliver a texture having particulate matter therein to orovide r.: e rougher texture.
SummarY ~P :he ' :vention _'''he :=esent izvention comprises an aerosol z0 dispensi:c Gpparatus particularly adapted to dispense a sprav texture coating material against a surface, where the material comprises a mixture cf a car:_er Fluid component and a particulate material o:stributed throughout the fluid ccmnonent.
This anparatus comprises an aerosol container having a:aain containing chamber adapted to contain said material in one part of said chamber and a propellant at a predetermined pressure level greater than ambient pressure in another part of said chamber. There is a valve assembly mounted to the container. This valve assembly comprises a valve housing means mounted to the container, and a valve element noveably mounted to the valve housing cr movement between a closed and an open position. The valve assembly defines a discharge passageway means having an intake opening means communicating with the material containing part of said main chamber to receive the material therefrom, and an exit opening to discharge the material =--om the chamber.
The propellant either remains in a gaseous =0 state, or remains in mostly a liquid state at the predetermined pressure level in the container, so that It can vapori.ze and expand to discharge the texture material. 'he particulate material comprises a plurality of particles having a :5 predetermined maximum particle size, and having compressibility rom the maximum particle size.
The intake onening means of the valve is sized anci arranged relative to the maximum particle size and compressibility of the I0 aarticles, so that with the valve element in the open position, wnen the particles are at the intake opening means and exposed to pressure in the container and to a:ower pressure in the discharae passaaeway, and with the valve assembly 25 :z the open posit-"6n, ;.he particles in the mixture are able :o pass through the intake opening means and out the discharge opening means.
In the preferred form, the valve assembly comprises entry chamber means defining an entry ?0 chamber having an intake opening connecting to the main chamber of the container, and also opening to the valve passageway in the valve assembly.
-The-valve passageway leads to an expanded passageway region, which in turn leads to a valve outlet of.a smaller cross sectional area. The outlet nozzle desirably has an elongate, laterally extending nozzle opening.
In the embodiment where compressed gas is used as the propellant, the gas is in direct contact with the material. In a second embodiment where a vorizable liquid is used as the propellant, the material is contained in a flexible bag-like container to be separated from the propellant.
Brief Description of the Drawings IS Figure 1 is a longitudinal sectional view of a first embodiment of the present invention;
Figure 2=s an isometric view of an upper portion cf the valve assembly of the first embodiment;
:0 Figure 3 is a-ongitudinal sectional view of that portion of ::e valve assembly illustrated in Figure 2;
Figure 4 '_s a=ongitudinal sectional view of the lower and middle portion of the valve assembly :.5 of the first embodiment of Figure 1, with the valve in zhe closed position;
Figure 5 is a view similar to Figure 4, but showing the valve in the open position;
Figure 6 is a longitudinal sectional view, 30 similar to Figure 1, of a second embodiment of the present _Zvention;
Z
Ficrure 7 is a longitudinal sectional view of the lower part of the valve assembly of the second embodiment of Figure 6.
Descriuticn of the Preferred Embodime"
Figure 1 i'_l-ustrates the apparatus 10 of the first embodiment -f the present invention which is particularly adapted to apply an acoustic texture material zo the surface of a ceiling. This apparatus '_0 comnrises a container 12 and a discharge assembly 14. The container 12 defines a chamber 16 havina a texture material containing portion :9 and a:ropellant containing portion 20.
-n this first embodiment, the texture material containing portion 18 is located in the bottom part of the chamber 16 since the apparatus 10 is normally cperated in a vertically aligned position so that t::e texture material 22 is positioned by gravity _.. t:e 1 ower part of the chamber 16. The ~0 propellant zontai::ng portion 20 is in the upper part of the chamber 16, and the propellant 24 is a gaseous substance which is substantially inert, such as _:t_ogen cr acmospheric air, relative to the texture :nateriai Z2. There is a pressure -5 interface :.6 between the upper surface 28 of the texture material 22 and the gaseous propellant 24 that is immediately above, with the propellant 24 being (in this f;rst embodiment) in direct contact with the texture material 22.
'0 The c--ntainer 12 comprises a cylindrical side wall 30, :aving an upper frusto-conical wall section 32, and a bottom wall 34. The discharge s V
assembly 14 comprises an infeed section 36 and a valve section 38.
The _'zfeeci section 36 comprises a feed tube 40 having a iower open end 42 positioned adjacent to and just above the bottom wall 34, and an upper end 44 which fits within a downwardly extending stub 46 that is part of an entry chamber housing 48 that defines an entry chamber 50. To describe briefly the function of this infeed section 36, in ?0 operation the texture material 22 is forced by oressure from the propellant 24 to flow into the lower oDen end 42 of the tube 40 and into the entry chamber 50. From this chamber 50, the texture material ilows into the valve section 38.
?5 The valve section 38 comprises a mounting collar 52 (sometimes referred to as a"cup"), a flexible valve seal and mounting member 54, a valve stem E6, a valve handle portion 58, a positioning sprir.g 59, and an end nozzle section 20 60.
With reference to Figures 4 and 5, the valve mounting collar 52 has a perimeter portion 62 which extends upwardly from the collar side wall 03 to curve upwardly and outwardly and then z5 downwardly :z approximately a 180 curve. This perimeter cortion 62 is positioned over a circumferential =ip 64 that is formed from an inner circ,=ferential edge of the upper wall 32 and extends in a circle around the inside edge of 30 the frusto-conical upper wall 32. This lip 64 at its inner edge is curved (as seen in cross section) upwardly, outwardly and then downwardly in a curved configuration so as to fit within the curved perimeter portion 62 of the mounting collar 52.
A significant 'ffeature of the present invention Is the manner in which this mounting collar 52 forms a seal with the upper container wall 32 and also .4orms a seal with the aforementioned entry chamber housing 48. More particularly, the entry chamber housing 48 comprises a bottom wall 66 and a cylindrical side wall 68. The walls 66 and 68 are made integrally of a semi-rigid plastic material which is able to yield moderately.
As can be seen in Figure 4, the upper edge 70 of the side wall 68 has its thickness dimension reduced to a very small thickness so as to be reasonably =lexible. Then the upper edge portion is formed in a curve 70 that extends upwardly and 4nwardly, and then outwardly in a somewhat :ownward c::rre, _ :is curved portion being indicated at 74, so that this upper curved portion 74 of the chamber member side wall 68 fits snugly between the collar aerimeter portion 62 of the collar 52 and the circular lip 64 of the upper container wall 32.
~5 In addition, by initially forming the edge portion 74 of quite thin material (which then can be formed in a circular curve), stresses that might be created 4-n thus attaching the upper edge portion 74 to the container lip 64 are not transmitted into the side wall 68 of the entry chamber housing 48.
This connection of the perimeter portion 62, circular lip 64 and the curved section 74 can convenient+y be orovided as follows. The inner edge of t::e container upper wall 32 is preformed to form the circular lip 64, and the collar 52 is also preformed with its semi-circular perimeter portion 62. The upper curved section of the entry housing 48 can either be prefonaed with its upper curved section 74, or this curve 74 can be made at the time of assembly.
Initially, :he entry housing 48 with the tube ~0 40 already mounted therein is positioned within the container 1~2 with the upper edge portion 74 of the housing sidewall 68 overlying the container lip 64. ':'::en the mounting collar 52, with the seal and mounting member 54 and the valve stem 56 already mounted thereto is positioned in the opening at the upper end of the container 12, with the collar perimeter portion 62 overlying the curved port:on 74. After this, an expanding tool '_s posit:oned wit':in the collar 52 and is operated to push radially cutwardly against the sidewall 63 of the collar 52 at approximately the location 75 to expand the col-lar sidewall at the location outwardly a short distance so that it forms a slanted waii section that engages part of the underside cf the container lip 64. This secures the collar 52 in place. Also, this makes a tight fit between the collar perimeter portion 62, the container lip 64 and the curved portion 74 so that a proper seal is formed. This seal is formed not only with respect to the chamber 16, but also this forms a seal within the entry chamber 50.
The valve seal and mounting member 54 in terms of function has two portions, namely a lower seal portion 78, and second a mounting portion 80.
The mounting portion 80 has a center opening 81 and fits within the.inner circular edge of a lower wall 82 of the mounting collar 52. The mounting portion 80 has.a lio or shoulder 83 that extends over the inner edge of the wall 82, and the seal portion 78 fits acainst the lower surface of the wall 82.
in this manner, the mounting portion 80 serves to support the valve stem 56 in the opening 81, with the valve stem supporting the valve handle portion 58 and the end nozzle section 60.
The seal portion 78 forms a seal not only for the inlets of the valve stem 56, but also forms a seal with the lower collar wall 82.
The describe the valve stem 56, there is a vertical tubular portion 84 that has as its lower end a closure disk or plate 86 which in the closed position abuts agai~st the lower circular edge 88 of the seal portion 78. The lower part of the tubular portion 84 of the stem 56 has two laterally extending openings 89. In the closed position of Figure 1, the seal portion 78 closes these two caeninas 38. The upper end portion 90 of the tubular stem portion 84 has external threads so :.::at it can be connected to the handle portion 58.
The valve handle portion 58 has a lower cylindrical mounting portion 92 which is internally threaded and fits in threaded engagement onto the upper end 90 of the valve stem tubular portion 84. This handle portion 58 has two outwardly extending actuating members or O F T
handle members 94 extending in opposite directions from one another, each of these members 94 having an upwardly concavely curved surface 96 to be engaged by the fingers of the person.
A circumferential shoulder 98 on the valve stem 56 engages the upper end of the positioning spring 59, and the lower end of the positioning spring 59 bears against the upper surface of the collar wall 82. '"hus, when the handle portion 58 is depressed downwardly, the spring 59 is deformed downwardly so as to provide a restoring force to move the handle portion 58 upwardly when the handle portion 58 is released. The upper part of the handle portion 58 comprises a tubular extension 100 that is connected to the end nozzle section 60.
V The tubular oortion 84 of the valve stem 56 defines an ::Dwardly extending through passageway i02 which lead '_:to an expanded passageway section ~0 (generally designated 104) formed in the upper end portion 100 of the handle portion 58 in conjunction with the upper nozzle section 60.
With reference to Figure 3, the valve handle portion 58 -'s fc ~ned so that imcnediately above the threaded mounting portion 92, there is an initial lower passageway portion 106 which receives the / very upper end of the valve stem and defines an upper passage entry portion 108. This passageway portion 108 lead into an upwardly and outwardly expanding passageway portion 110 which in turn leads into an inside surface portion 112 of a greater diameter, the surface portion 112 in effect defining an expansion chamber 114 which is =, part of t::e expanded passageway portion 104. From the chamber 114, :he passageway portion 104 diminishes in cross-sectional area in an upward direction, and this uppermost converging passageway section is formed by the nozzle section 60.
This nozzle section 60 is made of two molded parts which are half sections which fit within the valve handle upper portion 100 and are joined to one another along a vertical center plane as two side by side sections. There is a lowermost circular portion 116 having its diameter smaller than the diameter of the chamber surface portion 112. immediately above the section 116 there is a further necked down section 118, and this connects to an upwardly and inwardly slanted portion 119.to a further upward portion 120 which defines a yet smaller cylindrical passageway section 122 that '_eads into an end nozzle portion 124.
This end nozzle section 124 comprises two plate sections or flanges 126 which define therebetween an el-ongate laterally extending slot 128. These cwo plate sections 126 converge toward one another to forn the end slot 128. In addition, as can be seen in Figure 1, at opposite ends of the two flanges 126 there are laterally and outwardly extending connecting portions 130 which have outwardly slanting upwardly facing surface portions 132. Thus, it can be seen that this passageway at 122 is transformed in an upward direction from a cylindrical passageway to a passageway which converges in one direction (caused by the plates 126 slanting toward one _2 ~
another), and expands in a direction 90 from the first direction !caused by the outward slant of the surfaces 132 of the connecting portions 130).
The texture material 22 within the container 12 is a mixture that comprises a carrier fluid component and a particulate material having particles which are mixed throughout the carrier fluid. '"he gaseous propellant 24 in the upper chamber portion 20 is at a predetermined pressure level which is above ambient pressure (e.g. 100 8SI).
The particulate material is made from an expanded polystyrene having a predetermined maximum particle size ~e.g. the larger particles averaging about 1/8 of an inch across), with each particle being cctroressible to a smaller particle size dimension. !A compression test of a preferred form of the material indicates that under 1-00 =SI pressure, the volume is decreased 'rom 100W down zo 251 of the original volume).
Commonly, the particles of the mixture has a variety of sizes to provide a texture surface having dif=erent :article sizes. While this polystyrene material is the preferred material, within the broader scope of the present invention other materials (desirably compressible materials) could be used.
To describe the operation of the present invention, the apparatus 10 is provided to the end user with the texture material mixture contained within the container, and with the particulate material distributed throughout the fluid component. The texture material 22 occupies at ;3 least aaproximateiy one half of the volume of the chamber :6 or possibly somewhat more than half the volume of the chamber 16. Since the apparatus 10 is commonly operated in a vertical position to apply the spray texture material upwardly to a ceiling, the texture material 22 is normally positioned in the bottom of the container 12. In use, the apparatus 10 is grasped in a person's hand, with two of the person's fingers engaging the upper surfaces 96 of the handle members 94 to depress the handle portion 58 and the valve stem 56 against the urging of the spring 59. This moves the closure disk or plate 86 downwardly to expose the openings 88. The pressurized gas 24 i5 pushes the texture material 22 upwardly through the tube 40 into the entry chamber 50. It has been found that t::e particular arrangement as shown herein functions to reliably pass the particles in the mixture through the lateral valve openings 88 and 4-nto the passageway 102 defined by the valve stem 56.
The texture material 24 flows through the passageway _02 of -he valve stem 56 into the expansion chamber 104, and thence upwardly through the converging passageway portion defined by the nozzle portion 60. As the texture material flows into the upper nozzle portion, the texture material expands laterally in the end nozzle portion 124 in one direction, while the passageway is diminished in the direction 90 to the first direction. The material exiting from this elongate nozzle opening 128 is disbursed upwardly and somewhat laterally to be applied to the _4 surface (which, as indicated previously, would usually be a ceiling to which an acoustic texture material is applied.
In the preferred form, the texture mixture comprises the following ingredients:
a. A thickener that controls the film integrity of the composition;
b. a surfactant;
c. a defoamer to facilitate the processing and minimize bubbles when spraying;
d. an anti-microbial component;
e. a pigment component (often a whitener);
f. a commercially available ceiling texture material with the particles distributed therein;
i5 g. water.
When deposited on the surface, the texture material hardens for the finished textured surface.
A second embodiment of the present invention is illustrated in Figures 6 and 7. Components of this second emboaiment which are similar to components of the first embodiment will be given _;ke numerical designations, with an "a" suffix distinguishing those of the second embodiment.
z5 In this seccnd embodiment, the apparatus l0a comprises a container 12a and a discharge assembly 14a. However, the discharge assembly 14a does not have the feed tube 40 and the entry chamber housing 48 that are present in the first embodiment 10, shown in Figures 1 through S.
Another difference in this first embodiment is that the texture.material 22a, i4istead of being positioned by gravity in the bottom of the container 12a, is contained in a flexible sack-like container 140 that forms the texture material chamber 18a immediately adjacent to the valve section 38a. Further, the propellant 24a is 5 separated from the texture material 22a by the flexible container 140, and this propellant 24a is a vaporizable liarsid which when under pressure in the container remains liquid, but with a small pressure reduction vaporizes to form a gas which pushes against the texture material 22a.
In order to prevent the flexible sack-like container 140 from deforming in a manner to close off the intake openings to the valve, there is provided an elongate spring 142 which is positioned vertically in the texture material chamber 18a. The upper edge of the flexible container 140 is Dlaced in a curve over the inner rounded eciae 64a of the container upper wall 32a, and beneath the curved perimeter portion 62a of the collar 52a, :z the same manner as the rounded portion 74 of. the entry chamber ousing of the first embodiment.
As in the first embodiment, there is the valve section 38a which comprises a mounting collar 52a, the seal and mounting member 54a, the valve stem 56a, the valve handle portion 58a, and the end nozzle section 60a. All of these components 52a through 60a are substantially the same as in the first embodiment, except that the positioning spring 59 of the first embodiment is omitted. _n its place, the seal and mounting member 54a is provided with an upwardly extending resilient tube portion 144 that is made integral with the seal and mounting member 54a. When the handle portion 58A is depressed, this deforms this resilient tubular portion 144 outwardly so as to be axially compressed.
In operation, when the valve section 38A
is moved to the open position, the propellant 24a pushes the texture material 18A into the valve openings 88a and out and upwardly through the passageway 102a, to exit out the nozzle opening 128a. The manner in which this occurs is believed to be evident from the description in the first embodiment, so this will not be repeated in connection with this second embodiment.
As indicated above, as the volume of the texture material 22a decreases, the flexible container 140 collapses, with the propellant 24a expanding in the propellant chamber 20a.
It is apparent that various modifications could be made the present invention without departing from the basic teachings thereof.
AND METHOD FOR A PARTICULATE CONTAINING MATERIAL
Backaround of the Invention Field of the Invention The present invention relates to a texture spraying apparatus to discharge a texture material onto a surface, and more particularly to an aerosol spray texture apparatus particularly adapted for discharging a texture material having Darticulate matter contained therein.
:.5 9ac cl ground Art There are in the prior art various devices to spray a texture ;naterial onto a wall surface or a ceiling. :epencii~g upon the nature of the ccmposit-'cn and ct:er factors, the material that ~0 '_s spraveci -nto t he surface as a coating can have varying dearees of "roughness".
In some instances, the somewhat roughened texture _s achieved by utilizing a textured composit:cn that orms '_nto droplets when it is 25 dispensed, with the material then hardening with these droplets providing the textured surface. In other instances, solid particulate material is mixed with the liquid texture materialso that with the particulate material being deposited with 30 the hardenable liquid material on the wall surface, these particles provide the textured surface.
There are in the prior art spray texture devices using an aerosol container which contains the texture material under pressure and from which the textured material is discharged onto a surface. Such aerosol dispensers are commonly used when there is a relatively small surface area to be covered with the spray texture material.
'~-do such spray texture devices are disclosed in U.S. patent 5,037,011, issued August 6, 1991, and more recently U.S. patent 5,188,263, issued =ebruary 23, 1993 with John R. Woods being named '_nventor of both of these patents.
However, such prior art aerosol spray texture devices ::ave not been properly adapted to deliver a texture having particulate matter therein to orovide r.: e rougher texture.
SummarY ~P :he ' :vention _'''he :=esent izvention comprises an aerosol z0 dispensi:c Gpparatus particularly adapted to dispense a sprav texture coating material against a surface, where the material comprises a mixture cf a car:_er Fluid component and a particulate material o:stributed throughout the fluid ccmnonent.
This anparatus comprises an aerosol container having a:aain containing chamber adapted to contain said material in one part of said chamber and a propellant at a predetermined pressure level greater than ambient pressure in another part of said chamber. There is a valve assembly mounted to the container. This valve assembly comprises a valve housing means mounted to the container, and a valve element noveably mounted to the valve housing cr movement between a closed and an open position. The valve assembly defines a discharge passageway means having an intake opening means communicating with the material containing part of said main chamber to receive the material therefrom, and an exit opening to discharge the material =--om the chamber.
The propellant either remains in a gaseous =0 state, or remains in mostly a liquid state at the predetermined pressure level in the container, so that It can vapori.ze and expand to discharge the texture material. 'he particulate material comprises a plurality of particles having a :5 predetermined maximum particle size, and having compressibility rom the maximum particle size.
The intake onening means of the valve is sized anci arranged relative to the maximum particle size and compressibility of the I0 aarticles, so that with the valve element in the open position, wnen the particles are at the intake opening means and exposed to pressure in the container and to a:ower pressure in the discharae passaaeway, and with the valve assembly 25 :z the open posit-"6n, ;.he particles in the mixture are able :o pass through the intake opening means and out the discharge opening means.
In the preferred form, the valve assembly comprises entry chamber means defining an entry ?0 chamber having an intake opening connecting to the main chamber of the container, and also opening to the valve passageway in the valve assembly.
-The-valve passageway leads to an expanded passageway region, which in turn leads to a valve outlet of.a smaller cross sectional area. The outlet nozzle desirably has an elongate, laterally extending nozzle opening.
In the embodiment where compressed gas is used as the propellant, the gas is in direct contact with the material. In a second embodiment where a vorizable liquid is used as the propellant, the material is contained in a flexible bag-like container to be separated from the propellant.
Brief Description of the Drawings IS Figure 1 is a longitudinal sectional view of a first embodiment of the present invention;
Figure 2=s an isometric view of an upper portion cf the valve assembly of the first embodiment;
:0 Figure 3 is a-ongitudinal sectional view of that portion of ::e valve assembly illustrated in Figure 2;
Figure 4 '_s a=ongitudinal sectional view of the lower and middle portion of the valve assembly :.5 of the first embodiment of Figure 1, with the valve in zhe closed position;
Figure 5 is a view similar to Figure 4, but showing the valve in the open position;
Figure 6 is a longitudinal sectional view, 30 similar to Figure 1, of a second embodiment of the present _Zvention;
Z
Ficrure 7 is a longitudinal sectional view of the lower part of the valve assembly of the second embodiment of Figure 6.
Descriuticn of the Preferred Embodime"
Figure 1 i'_l-ustrates the apparatus 10 of the first embodiment -f the present invention which is particularly adapted to apply an acoustic texture material zo the surface of a ceiling. This apparatus '_0 comnrises a container 12 and a discharge assembly 14. The container 12 defines a chamber 16 havina a texture material containing portion :9 and a:ropellant containing portion 20.
-n this first embodiment, the texture material containing portion 18 is located in the bottom part of the chamber 16 since the apparatus 10 is normally cperated in a vertically aligned position so that t::e texture material 22 is positioned by gravity _.. t:e 1 ower part of the chamber 16. The ~0 propellant zontai::ng portion 20 is in the upper part of the chamber 16, and the propellant 24 is a gaseous substance which is substantially inert, such as _:t_ogen cr acmospheric air, relative to the texture :nateriai Z2. There is a pressure -5 interface :.6 between the upper surface 28 of the texture material 22 and the gaseous propellant 24 that is immediately above, with the propellant 24 being (in this f;rst embodiment) in direct contact with the texture material 22.
'0 The c--ntainer 12 comprises a cylindrical side wall 30, :aving an upper frusto-conical wall section 32, and a bottom wall 34. The discharge s V
assembly 14 comprises an infeed section 36 and a valve section 38.
The _'zfeeci section 36 comprises a feed tube 40 having a iower open end 42 positioned adjacent to and just above the bottom wall 34, and an upper end 44 which fits within a downwardly extending stub 46 that is part of an entry chamber housing 48 that defines an entry chamber 50. To describe briefly the function of this infeed section 36, in ?0 operation the texture material 22 is forced by oressure from the propellant 24 to flow into the lower oDen end 42 of the tube 40 and into the entry chamber 50. From this chamber 50, the texture material ilows into the valve section 38.
?5 The valve section 38 comprises a mounting collar 52 (sometimes referred to as a"cup"), a flexible valve seal and mounting member 54, a valve stem E6, a valve handle portion 58, a positioning sprir.g 59, and an end nozzle section 20 60.
With reference to Figures 4 and 5, the valve mounting collar 52 has a perimeter portion 62 which extends upwardly from the collar side wall 03 to curve upwardly and outwardly and then z5 downwardly :z approximately a 180 curve. This perimeter cortion 62 is positioned over a circumferential =ip 64 that is formed from an inner circ,=ferential edge of the upper wall 32 and extends in a circle around the inside edge of 30 the frusto-conical upper wall 32. This lip 64 at its inner edge is curved (as seen in cross section) upwardly, outwardly and then downwardly in a curved configuration so as to fit within the curved perimeter portion 62 of the mounting collar 52.
A significant 'ffeature of the present invention Is the manner in which this mounting collar 52 forms a seal with the upper container wall 32 and also .4orms a seal with the aforementioned entry chamber housing 48. More particularly, the entry chamber housing 48 comprises a bottom wall 66 and a cylindrical side wall 68. The walls 66 and 68 are made integrally of a semi-rigid plastic material which is able to yield moderately.
As can be seen in Figure 4, the upper edge 70 of the side wall 68 has its thickness dimension reduced to a very small thickness so as to be reasonably =lexible. Then the upper edge portion is formed in a curve 70 that extends upwardly and 4nwardly, and then outwardly in a somewhat :ownward c::rre, _ :is curved portion being indicated at 74, so that this upper curved portion 74 of the chamber member side wall 68 fits snugly between the collar aerimeter portion 62 of the collar 52 and the circular lip 64 of the upper container wall 32.
~5 In addition, by initially forming the edge portion 74 of quite thin material (which then can be formed in a circular curve), stresses that might be created 4-n thus attaching the upper edge portion 74 to the container lip 64 are not transmitted into the side wall 68 of the entry chamber housing 48.
This connection of the perimeter portion 62, circular lip 64 and the curved section 74 can convenient+y be orovided as follows. The inner edge of t::e container upper wall 32 is preformed to form the circular lip 64, and the collar 52 is also preformed with its semi-circular perimeter portion 62. The upper curved section of the entry housing 48 can either be prefonaed with its upper curved section 74, or this curve 74 can be made at the time of assembly.
Initially, :he entry housing 48 with the tube ~0 40 already mounted therein is positioned within the container 1~2 with the upper edge portion 74 of the housing sidewall 68 overlying the container lip 64. ':'::en the mounting collar 52, with the seal and mounting member 54 and the valve stem 56 already mounted thereto is positioned in the opening at the upper end of the container 12, with the collar perimeter portion 62 overlying the curved port:on 74. After this, an expanding tool '_s posit:oned wit':in the collar 52 and is operated to push radially cutwardly against the sidewall 63 of the collar 52 at approximately the location 75 to expand the col-lar sidewall at the location outwardly a short distance so that it forms a slanted waii section that engages part of the underside cf the container lip 64. This secures the collar 52 in place. Also, this makes a tight fit between the collar perimeter portion 62, the container lip 64 and the curved portion 74 so that a proper seal is formed. This seal is formed not only with respect to the chamber 16, but also this forms a seal within the entry chamber 50.
The valve seal and mounting member 54 in terms of function has two portions, namely a lower seal portion 78, and second a mounting portion 80.
The mounting portion 80 has a center opening 81 and fits within the.inner circular edge of a lower wall 82 of the mounting collar 52. The mounting portion 80 has.a lio or shoulder 83 that extends over the inner edge of the wall 82, and the seal portion 78 fits acainst the lower surface of the wall 82.
in this manner, the mounting portion 80 serves to support the valve stem 56 in the opening 81, with the valve stem supporting the valve handle portion 58 and the end nozzle section 60.
The seal portion 78 forms a seal not only for the inlets of the valve stem 56, but also forms a seal with the lower collar wall 82.
The describe the valve stem 56, there is a vertical tubular portion 84 that has as its lower end a closure disk or plate 86 which in the closed position abuts agai~st the lower circular edge 88 of the seal portion 78. The lower part of the tubular portion 84 of the stem 56 has two laterally extending openings 89. In the closed position of Figure 1, the seal portion 78 closes these two caeninas 38. The upper end portion 90 of the tubular stem portion 84 has external threads so :.::at it can be connected to the handle portion 58.
The valve handle portion 58 has a lower cylindrical mounting portion 92 which is internally threaded and fits in threaded engagement onto the upper end 90 of the valve stem tubular portion 84. This handle portion 58 has two outwardly extending actuating members or O F T
handle members 94 extending in opposite directions from one another, each of these members 94 having an upwardly concavely curved surface 96 to be engaged by the fingers of the person.
A circumferential shoulder 98 on the valve stem 56 engages the upper end of the positioning spring 59, and the lower end of the positioning spring 59 bears against the upper surface of the collar wall 82. '"hus, when the handle portion 58 is depressed downwardly, the spring 59 is deformed downwardly so as to provide a restoring force to move the handle portion 58 upwardly when the handle portion 58 is released. The upper part of the handle portion 58 comprises a tubular extension 100 that is connected to the end nozzle section 60.
V The tubular oortion 84 of the valve stem 56 defines an ::Dwardly extending through passageway i02 which lead '_:to an expanded passageway section ~0 (generally designated 104) formed in the upper end portion 100 of the handle portion 58 in conjunction with the upper nozzle section 60.
With reference to Figure 3, the valve handle portion 58 -'s fc ~ned so that imcnediately above the threaded mounting portion 92, there is an initial lower passageway portion 106 which receives the / very upper end of the valve stem and defines an upper passage entry portion 108. This passageway portion 108 lead into an upwardly and outwardly expanding passageway portion 110 which in turn leads into an inside surface portion 112 of a greater diameter, the surface portion 112 in effect defining an expansion chamber 114 which is =, part of t::e expanded passageway portion 104. From the chamber 114, :he passageway portion 104 diminishes in cross-sectional area in an upward direction, and this uppermost converging passageway section is formed by the nozzle section 60.
This nozzle section 60 is made of two molded parts which are half sections which fit within the valve handle upper portion 100 and are joined to one another along a vertical center plane as two side by side sections. There is a lowermost circular portion 116 having its diameter smaller than the diameter of the chamber surface portion 112. immediately above the section 116 there is a further necked down section 118, and this connects to an upwardly and inwardly slanted portion 119.to a further upward portion 120 which defines a yet smaller cylindrical passageway section 122 that '_eads into an end nozzle portion 124.
This end nozzle section 124 comprises two plate sections or flanges 126 which define therebetween an el-ongate laterally extending slot 128. These cwo plate sections 126 converge toward one another to forn the end slot 128. In addition, as can be seen in Figure 1, at opposite ends of the two flanges 126 there are laterally and outwardly extending connecting portions 130 which have outwardly slanting upwardly facing surface portions 132. Thus, it can be seen that this passageway at 122 is transformed in an upward direction from a cylindrical passageway to a passageway which converges in one direction (caused by the plates 126 slanting toward one _2 ~
another), and expands in a direction 90 from the first direction !caused by the outward slant of the surfaces 132 of the connecting portions 130).
The texture material 22 within the container 12 is a mixture that comprises a carrier fluid component and a particulate material having particles which are mixed throughout the carrier fluid. '"he gaseous propellant 24 in the upper chamber portion 20 is at a predetermined pressure level which is above ambient pressure (e.g. 100 8SI).
The particulate material is made from an expanded polystyrene having a predetermined maximum particle size ~e.g. the larger particles averaging about 1/8 of an inch across), with each particle being cctroressible to a smaller particle size dimension. !A compression test of a preferred form of the material indicates that under 1-00 =SI pressure, the volume is decreased 'rom 100W down zo 251 of the original volume).
Commonly, the particles of the mixture has a variety of sizes to provide a texture surface having dif=erent :article sizes. While this polystyrene material is the preferred material, within the broader scope of the present invention other materials (desirably compressible materials) could be used.
To describe the operation of the present invention, the apparatus 10 is provided to the end user with the texture material mixture contained within the container, and with the particulate material distributed throughout the fluid component. The texture material 22 occupies at ;3 least aaproximateiy one half of the volume of the chamber :6 or possibly somewhat more than half the volume of the chamber 16. Since the apparatus 10 is commonly operated in a vertical position to apply the spray texture material upwardly to a ceiling, the texture material 22 is normally positioned in the bottom of the container 12. In use, the apparatus 10 is grasped in a person's hand, with two of the person's fingers engaging the upper surfaces 96 of the handle members 94 to depress the handle portion 58 and the valve stem 56 against the urging of the spring 59. This moves the closure disk or plate 86 downwardly to expose the openings 88. The pressurized gas 24 i5 pushes the texture material 22 upwardly through the tube 40 into the entry chamber 50. It has been found that t::e particular arrangement as shown herein functions to reliably pass the particles in the mixture through the lateral valve openings 88 and 4-nto the passageway 102 defined by the valve stem 56.
The texture material 24 flows through the passageway _02 of -he valve stem 56 into the expansion chamber 104, and thence upwardly through the converging passageway portion defined by the nozzle portion 60. As the texture material flows into the upper nozzle portion, the texture material expands laterally in the end nozzle portion 124 in one direction, while the passageway is diminished in the direction 90 to the first direction. The material exiting from this elongate nozzle opening 128 is disbursed upwardly and somewhat laterally to be applied to the _4 surface (which, as indicated previously, would usually be a ceiling to which an acoustic texture material is applied.
In the preferred form, the texture mixture comprises the following ingredients:
a. A thickener that controls the film integrity of the composition;
b. a surfactant;
c. a defoamer to facilitate the processing and minimize bubbles when spraying;
d. an anti-microbial component;
e. a pigment component (often a whitener);
f. a commercially available ceiling texture material with the particles distributed therein;
i5 g. water.
When deposited on the surface, the texture material hardens for the finished textured surface.
A second embodiment of the present invention is illustrated in Figures 6 and 7. Components of this second emboaiment which are similar to components of the first embodiment will be given _;ke numerical designations, with an "a" suffix distinguishing those of the second embodiment.
z5 In this seccnd embodiment, the apparatus l0a comprises a container 12a and a discharge assembly 14a. However, the discharge assembly 14a does not have the feed tube 40 and the entry chamber housing 48 that are present in the first embodiment 10, shown in Figures 1 through S.
Another difference in this first embodiment is that the texture.material 22a, i4istead of being positioned by gravity in the bottom of the container 12a, is contained in a flexible sack-like container 140 that forms the texture material chamber 18a immediately adjacent to the valve section 38a. Further, the propellant 24a is 5 separated from the texture material 22a by the flexible container 140, and this propellant 24a is a vaporizable liarsid which when under pressure in the container remains liquid, but with a small pressure reduction vaporizes to form a gas which pushes against the texture material 22a.
In order to prevent the flexible sack-like container 140 from deforming in a manner to close off the intake openings to the valve, there is provided an elongate spring 142 which is positioned vertically in the texture material chamber 18a. The upper edge of the flexible container 140 is Dlaced in a curve over the inner rounded eciae 64a of the container upper wall 32a, and beneath the curved perimeter portion 62a of the collar 52a, :z the same manner as the rounded portion 74 of. the entry chamber ousing of the first embodiment.
As in the first embodiment, there is the valve section 38a which comprises a mounting collar 52a, the seal and mounting member 54a, the valve stem 56a, the valve handle portion 58a, and the end nozzle section 60a. All of these components 52a through 60a are substantially the same as in the first embodiment, except that the positioning spring 59 of the first embodiment is omitted. _n its place, the seal and mounting member 54a is provided with an upwardly extending resilient tube portion 144 that is made integral with the seal and mounting member 54a. When the handle portion 58A is depressed, this deforms this resilient tubular portion 144 outwardly so as to be axially compressed.
In operation, when the valve section 38A
is moved to the open position, the propellant 24a pushes the texture material 18A into the valve openings 88a and out and upwardly through the passageway 102a, to exit out the nozzle opening 128a. The manner in which this occurs is believed to be evident from the description in the first embodiment, so this will not be repeated in connection with this second embodiment.
As indicated above, as the volume of the texture material 22a decreases, the flexible container 140 collapses, with the propellant 24a expanding in the propellant chamber 20a.
It is apparent that various modifications could be made the present invention without departing from the basic teachings thereof.
Claims (28)
1. An aerosol dispensing apparatus to dispense against a surface a spray texture coating material comprising a carrier fluid and particulate material contained in the carrier fluid, said apparatus comprising:
a. an aerosol container defining a containing chamber having:
i. a texture material chamber portion in which said texture material is contained;
ii. a propellant chamber portion containing a propellant;
iii. said container and said chamber portions being arranged so that there is a pressure interface between said propellant and said texture material;
b. a discharge assembly having a discharge opening, a main inlet opening, and valve means to control flow from said main inlet opening to said discharge opening, said main inlet opening being positioned to be in communication with said texture material in said texture material chamber portion, but substantially isolated from said propellant chamber portion;
c. an entry chamber housing defining an entry chamber which is positioned to receive texture material from said main inlet opening, said entry chamber communicating with said valve means to transmit said texture material through said valve means when said valve means is open;
d. said apparatus having a closure sealing means comprising a perimeter edge portion of a collar for said valve means, an inner circumferential edge portion of a top wall of the container, and an upper edge portion of said entry chamber housing, the upper edge portion of the entry chamber housing being positioned between said perimeter edge portion 1.7 of the collar and the edge portion of the top wall of the container, whereby an effective seal is formed for said entry chamber, and also for said containing chamber.
a. an aerosol container defining a containing chamber having:
i. a texture material chamber portion in which said texture material is contained;
ii. a propellant chamber portion containing a propellant;
iii. said container and said chamber portions being arranged so that there is a pressure interface between said propellant and said texture material;
b. a discharge assembly having a discharge opening, a main inlet opening, and valve means to control flow from said main inlet opening to said discharge opening, said main inlet opening being positioned to be in communication with said texture material in said texture material chamber portion, but substantially isolated from said propellant chamber portion;
c. an entry chamber housing defining an entry chamber which is positioned to receive texture material from said main inlet opening, said entry chamber communicating with said valve means to transmit said texture material through said valve means when said valve means is open;
d. said apparatus having a closure sealing means comprising a perimeter edge portion of a collar for said valve means, an inner circumferential edge portion of a top wall of the container, and an upper edge portion of said entry chamber housing, the upper edge portion of the entry chamber housing being positioned between said perimeter edge portion 1.7 of the collar and the edge portion of the top wall of the container, whereby an effective seal is formed for said entry chamber, and also for said containing chamber.
2. The apparatus as recited in Claim 1, wherein said entry chamber housing is made of a structural material which is formed as a main wall portion having a thickness dimension sufficiently great to withstand a pressure differential established by said propellant in said propellant chamber portion, and the upper edge of the structural material is sufficiently flexible to fit in sealing relationship between the perimeter edge portion of the collar and the edge portion of the top wall of the container.
3. The apparatus as recited in Claim 2, wherein the perimeter edge portion of the collar and the edge portion of the top wall of the container each have an upwardly convexly curved configuration, and said upper edge of the structural material fits in a curved configuration between the perimeter edge portion of the collar and the edge portion of the top wall of the container.
4. The apparatus as recited in Claim 2, wherein said valve means comprises a valve stem defining a flow passageway and having a stem inlet opening positioned in said entry chamber, and an upper end leading to the discharge opening, a seal member positioned in said entry chamber to close the stem inlet opening when the valve stem is in a closed position and to open the stem inlet opening when the valve stem is moved to an open position, said entry chamber housing being spaced sufficiently from the stem inlet opening to permit the particulate material to pass into said entry chamber and through the stem inlet opening.
5. The apparatus as recited in Claim 4, wherein said stem inlet opening opens laterally into said entry chamber, said discharge assembly comprising a tube means having at a lower end thereof the stem inlet opening and having an upper end leading into a lower portion of said entry housing, where lower and side walls of the entry housing are spaced from the lower end of the valve stem and from the stem inlet opening to permit the particulate material of the spray texture coating material to flow through the entry housing and into the valve stem.
6. The apparatus as recited in Claim 1, wherein said valve means comprises a valve stem defining a flow passageway and having a stem inlet opening positioned in said entry chamber, and an upper end leading to the discharge opening, a seal member positioned in said entry chamber to close the stem inlet opening when the valve stem is in a closed position and to open the stem inlet opening when the valve stem is moved to an open position, said entry chamber housing being spaced sufficiently from the stem inlet opening to permit the particulate material to pass into said entry chamber and through the stem inlet opening.
7. The apparatus as recited in Claim 6, wherein said stem inlet opening opens laterally into said entry chamber, said discharge assembly comprising a tube means having at a lower end thereof the main inlet opening and having an upper end leading into a lower portion of said entry housing, with lower and side walls of the entry housing spaced from the lower end of the valve stem and the stem inlet opening to permit the particulate material of the spray texture coating material to flow through the entry housing and into the valve stem.
8. An aerosol dispensing apparatus to dispense against a surface a spray texture coating material, said apparatus comprising:
a. an aerosol container defining a containing chamber and having an upper dispensing end and a lower end;
b. said spray texture coating material being located in said containing chamber and comprising a carrier fluid with particulate material distributed throughout said carrier fluid;
c. a pressurized gaseous propellant which is inert, relative to the particulate material, being located in said containing chamber;
d. said container being arranged so that with the container is upright, the spray texture coating material is in a lower part of said containing chamber, said gaseous propellant is in an upper part of said containing chamber, and there is a pressure interface between said propellant and said spray texture coating material;
e. a discharge assembly comprising an infeed section having tube means with a main inlet opening positioned at the lower part of said containing chamber to allow the spray texture coating material to flow into said tube means, and a manually operable valve section having a discharge nozzle, said valve section being operatively connected to said infeed section to control flow of the spray texture coating material from said main inlet opening to said discharge nozzle; whereby with said container upright, said spray texture coating material can be expelled from said container through said discharge nozzle by expansion of said pressurized gaseous propellant acting against said spray texture coating material in said containing chamber.
a. an aerosol container defining a containing chamber and having an upper dispensing end and a lower end;
b. said spray texture coating material being located in said containing chamber and comprising a carrier fluid with particulate material distributed throughout said carrier fluid;
c. a pressurized gaseous propellant which is inert, relative to the particulate material, being located in said containing chamber;
d. said container being arranged so that with the container is upright, the spray texture coating material is in a lower part of said containing chamber, said gaseous propellant is in an upper part of said containing chamber, and there is a pressure interface between said propellant and said spray texture coating material;
e. a discharge assembly comprising an infeed section having tube means with a main inlet opening positioned at the lower part of said containing chamber to allow the spray texture coating material to flow into said tube means, and a manually operable valve section having a discharge nozzle, said valve section being operatively connected to said infeed section to control flow of the spray texture coating material from said main inlet opening to said discharge nozzle; whereby with said container upright, said spray texture coating material can be expelled from said container through said discharge nozzle by expansion of said pressurized gaseous propellant acting against said spray texture coating material in said containing chamber.
9. The apparatus as recited in Claim 8, wherein said particulate material comprises particles which are compressible.
10. The apparatus as recited in Claim 9, wherein said particulate material is expanded polystyrene.
11. The apparatus as recited in Claim 10, wherein said pressurized gaseous propellant is selected from a group consisting of atmospheric air, nitrogen, and a combination thereof.
12. The apparatus as recited in Claim 9, wherein said pressurized gaseous propellant is selected from a group consisting of atmospheric air, nitrogen, and a combination thereof.
13. The apparatus as recited in Claim 9, wherein said valve section defines a valve passageway having first and second passageway portions, where the second passageway portion has a greater diameter and leads from said first passageway portion to said nozzle.
14. The apparatus as recited in Claim 13, wherein said nozzle comprises a pair of side plates which define an elongate slot to receive flow from said second passageway portion.
15. The apparatus as recited in Claim 14, wherein said slot defined by said two side plates has in one direction a width dimension which diminishes in a converging configuration upwardly and a lengthwise dimension at right angles to said width dimension having a diverging configuration in an upward direction, where the slot discharges said spray texture coating material in a fan configuration.
16. The apparatus as recited in Claim 8, further comprising an entry chamber housing defining an entry chamber which is positioned to receive the spray texture coating material from the tube means and direct said spray texture coating material to said valve section, said apparatus having a closure sealing means comprising a perimeter edge portion of a collar for said valve section, an inner circumferential edge portion of a top wall of the container, and an upper edge portion of said entry chamber housing, the upper edge portion of the entry chamber housing being positioned between said perimeter edge portion of the collar and the edge portion of the top wall of the container.
17. The apparatus as recited in Claim 16, wherein said entry chamber housing is made of a structural material which is formed as a main wall portion having a thickness dimension sufficiently great to withstand a pressure differential established by said propellant in said upper part of said containing chamber, and the upper edge of the structural material is sufficiently thin so as to be sufficiently flexible to fit in sealing relationship between the perimeter edge portion of the collar and the edge portion of the top wall of the container.
18. The apparatus as recited in Claim 8, wherein said carrier fluid comprises a thickener to control film integrity, a surfactant, a defoamer, an anti-microbial component, a pigment component, and a hardenable material.
19. A method of providing and dispensing a spray texture coating material against a surface, said method comprising:
a. providing an aerosol container defining a containing chamber and having an upper dispensing end and a lower end, and containing a spray texture material comprising a carrier fluid with particulate material distributed throughout said carrier fluid;
b. providing in said containing chamber a pressurized gaseous propellant which is inert, relative to the particulate material being located in said chamber, in a manner that with the container upright, the spray texture material is in a lower part of said containing chamber, said gaseous propellant is in an upper part of said containing chamber, and there is a pressure interface between said propellant and said texture material;
c. providing a discharge assembly comprising an infeed section having tube means with an inlet opening positioned at the lower part of said containing chamber to receive the texture material flowing into said tube means, and a manually operable valve section having a discharge nozzle and a valve, said valve section being operatively connected to said infeed section, and operating said valve to cause flow of the texture material from said inlet opening and through said discharge nozzle by expansion of said pressurized gas acting against said spray texture material in said containing chamber.
a. providing an aerosol container defining a containing chamber and having an upper dispensing end and a lower end, and containing a spray texture material comprising a carrier fluid with particulate material distributed throughout said carrier fluid;
b. providing in said containing chamber a pressurized gaseous propellant which is inert, relative to the particulate material being located in said chamber, in a manner that with the container upright, the spray texture material is in a lower part of said containing chamber, said gaseous propellant is in an upper part of said containing chamber, and there is a pressure interface between said propellant and said texture material;
c. providing a discharge assembly comprising an infeed section having tube means with an inlet opening positioned at the lower part of said containing chamber to receive the texture material flowing into said tube means, and a manually operable valve section having a discharge nozzle and a valve, said valve section being operatively connected to said infeed section, and operating said valve to cause flow of the texture material from said inlet opening and through said discharge nozzle by expansion of said pressurized gas acting against said spray texture material in said containing chamber.
20. The method as recited in Claim 19, wherein said particulate material comprises particles which are compressible.
21. An aerosol system for applying a coating to a target surface, comprising:
an aerosol container defining a container chamber, where a texture material is arranged in a first portion of the container chamber, where the texture material comprises particulate material, a propellant material is arranged in a second portion of the container chamber, where the propellant material is a pressurized inert gas, and a pressure interface is formed between the first and second portions of the container chamber;
an inlet assembly defining an inlet opening within the container chamber, where the inlet opening is arranged in the first portion of the chamber during normal use of the aerosol container;
an end nozzle defining an outlet opening through which texture material is dispensed; and a valve assembly operable in a first configuration in which fluid flow from the inlet opening to the outlet opening is substantially prevented, and a second configuration in which fluid flow from the inlet opening to the outlet opening is allowed;
whereby the aerosol container is arranged such that the outlet opening is adjacent to the target surface;
the valve assembly is placed in the second configuration such that the propellant material acts on the texture material at the pressure interface to force the texture material through the inlet opening and the outlet opening and onto the target surface, and the texture material coats a portion of the target surface.
an aerosol container defining a container chamber, where a texture material is arranged in a first portion of the container chamber, where the texture material comprises particulate material, a propellant material is arranged in a second portion of the container chamber, where the propellant material is a pressurized inert gas, and a pressure interface is formed between the first and second portions of the container chamber;
an inlet assembly defining an inlet opening within the container chamber, where the inlet opening is arranged in the first portion of the chamber during normal use of the aerosol container;
an end nozzle defining an outlet opening through which texture material is dispensed; and a valve assembly operable in a first configuration in which fluid flow from the inlet opening to the outlet opening is substantially prevented, and a second configuration in which fluid flow from the inlet opening to the outlet opening is allowed;
whereby the aerosol container is arranged such that the outlet opening is adjacent to the target surface;
the valve assembly is placed in the second configuration such that the propellant material acts on the texture material at the pressure interface to force the texture material through the inlet opening and the outlet opening and onto the target surface, and the texture material coats a portion of the target surface.
22. The apparatus as recited in Claim 21, wherein the particulate material comprises particles that are compressible.
23. The apparatus as recited in Claim 21, wherein the particulate material is expanded polystyrene.
24. The apparatus as recited in Claim 21, wherein said pressurized gaseous propellant is selected from a group consisting of air, nitrogen, and a combination of air and nitrogen.
25. A method of applying a coating to a target surface, comprising the steps of:
providing an aerosol container defining a container chamber;
arranging a texture material in a first portion of the container chamber, where the texture material comprises particulate material, arranging a propellant material in a second portion of the container chamber, where the propellant material is a pressurized inert gas, where a pressure interface is formed between the first and second portions of the container chamber;
providing an inlet assembly defining an inlet opening within the chamber;
arranging the inlet opening in the first portion of the chamber during normal use of the aerosol container;
providing an end nozzle defining an outlet opening through which texture material is dispensed; and providing a valve assembly operable in a first configuration in which fluid flow from the inlet opening to the outlet opening is substantially prevented, and a second configuration in which fluid flow from the inlet opening to the outlet opening is allowed;
whereby arranging the aerosol container such that the outlet opening is adjacent to the first portion of the target surface;
placing the valve assembly in the second configuration such that the propellant material acts on the texture material at the pressure interface to force the texture material through the inlet opening and the outlet opening and onto the target surface; and allowing the texture material to dry in the form of a coating on the target surface.
providing an aerosol container defining a container chamber;
arranging a texture material in a first portion of the container chamber, where the texture material comprises particulate material, arranging a propellant material in a second portion of the container chamber, where the propellant material is a pressurized inert gas, where a pressure interface is formed between the first and second portions of the container chamber;
providing an inlet assembly defining an inlet opening within the chamber;
arranging the inlet opening in the first portion of the chamber during normal use of the aerosol container;
providing an end nozzle defining an outlet opening through which texture material is dispensed; and providing a valve assembly operable in a first configuration in which fluid flow from the inlet opening to the outlet opening is substantially prevented, and a second configuration in which fluid flow from the inlet opening to the outlet opening is allowed;
whereby arranging the aerosol container such that the outlet opening is adjacent to the first portion of the target surface;
placing the valve assembly in the second configuration such that the propellant material acts on the texture material at the pressure interface to force the texture material through the inlet opening and the outlet opening and onto the target surface; and allowing the texture material to dry in the form of a coating on the target surface.
26. The method as recited in Claim 25, wherein the particulate material comprises particles that are compressible.
27. The apparatus as recited in Claim 25, wherein the particulate material is expanded polystyrene.
28. The apparatus as recited in Claim 25, wherein said pressurized gaseous propellant is selected from a group consisting of atmospheric air, nitrogen, and a combination of air and nitrogen.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/216,155 | 1994-03-22 | ||
| US08/216,155 US5450983A (en) | 1993-03-12 | 1994-03-22 | Aerosol spray texture apparatus and method for a particulate containing material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2145129A1 CA2145129A1 (en) | 1995-09-23 |
| CA2145129C true CA2145129C (en) | 2007-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2145129 Expired - Lifetime CA2145129C (en) | 1994-03-22 | 1995-03-21 | Aerosol spray texture apparatus and method for a particulate containing material |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2145129C (en) |
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- 1995-03-21 CA CA 2145129 patent/CA2145129C/en not_active Expired - Lifetime
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|---|---|
| CA2145129A1 (en) | 1995-09-23 |
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