US3263873A - Spray dispensing device - Google Patents

Description

D. F. ARMOUR SPRAY DISPENSING DEVICE Aug. 2, 1966 4 Sheets-Sheet 1 Filed Sept. 16, 1964 DONALD F. ARMOUR INVENTOR ATTORNEY Aug. 2, 1966 D. F. ARMOUR 3,263,873

SPRAY DISPENS ING DEVICE Filed Sept. 16, 1964 4 Sheets-Sheet 2 DONALD E AEMQLIE INVENTOR FIG. 2 BY ATTORNEY Aug. 2, 1966 D. F. ARMOUR SPRAY DISPENSINGDEVICE 4 Sheets-Sheet 5 Filed Sept. 16, 1964 DONALD F? ARMOUR INVENTOR.

1966 D. F. ARMOUR 3,263,873

SPRAY DISPENSING DEVICE Filed Sept. 16, 1964 4 Sheets-Sheet 4 DONALD E' AEMOUE INVENTOR.

ATTOENEY United States Patent 3,263,873 SPRAY DISPENSING DEVICE Donald F. Armour, Bloomfield, Conn, assignor to Monsanto Company, St. Louis, Mo., a corporation of Delaware Filed Sept. 16, 1964, Ser. No. 396,908 1 Claim. (Cl. 222484) The present invention relates generally to a new and useful spray dispensing device, and more particularly to a spray dispenser which is capable of emitting sprays of varying intensity.

There are in existence various types of spray containers constructed of a variety of materials which utilize intricate and involved mechanisms to produce a spray of a uniform texture and density. These spray containers, however, fail to provide for the desirable degree of flexibility needed in adjusting a particular spray intensity to a particular application. Those spray containers available which allow this degree of flexibility generally do so only at the sacrifice of simplicity of construction, or at a cost which is prohibitive for many applications.

It has now been discovered in accordance with the present invention that it is possible to'produce a spray container which, through the manipulation of a single rotatable mechanism, can produce sprays of varying density and pressure. Spray containers of this type present obvious advantages over presently known spray containers, particularly in applications such as oral and nasal pharmaceutical sprays.

It is therefore an object of this invention to provide a new and useful spray dispensing device which presents obvious advantages over spray dispensing devices presently available.

It is a particular object of this invention to provide such an improved dispensing device including functionally interrelated material outlet and outlet closure means which cooperate to allow a user to effect a desired spray intensity by a simple rotatable manipulation of the closure means.

It is an additional object of this invention to provide such interrelated outlet and closure with means which cooperate to insure accurate and positive positioning of the respective components associated with the device.

It is a further object of this invention to provide a structural assembly of a container closure and outlet which is characterized by cylindrically configured components which are coaxially arranged and operably interconnected by appropriate abutment means to provide a structure of maximum simplicity, foolproof mode of assembly and functional reliability.

Each of the above objects has been realized through the development of a dispensing device including a material reservoir which is improved by the addition of a unique combination of a material outlet or plug means positioned within the neck or sleeve of the material reservoir and which cooperates with a rotatable closure means containing perforations, and which is adapted to be positioned over the plug means in such a manner that, upon rotation of the closure means, the spray intensity of the material being ejected from the reservoir may be adjusted to a particular desired level of intensity.

In the preferred embodiment, the outlet means comprises a plug having an opening therein, said plug being fitted within a generally cylindrical sleeve extending from thematerial reservoir. Positioned within the plug is an axially extending tubular conduit which conveys material to the plug orifice where it is mixed with an appropriate amount of air and forcibly ejected to the rotatable closure and through a perforation in the closure in the form of a spray. Both the closure and the plug contain cooperating abutment means which, upon rotation of the clo- 3 ,263,873 Patented August 2, 1966 "ice sure, cooperate to align one of the perforations on the closure with the plug orifice.

In describing the invention, reference will be made to a preferred embodiment illustrated in the accompanying drawings wherein:

FIGURE 1 is an elevational view of a container in which the improved dispensing outlet of the invention is incorporated;

FIGURE 2 is a fragmentary, partially sectioned and enlarged view of the components of the improved spray dispensing outlet of the invention shown in axially separated relationship;

FIGURE 3 is an enlarged, fragmentary and sectionalized view of the improved dispenser outlet shown in FIGURE 1.

FIGURE 4 is a top plan view of the dispenser outlet components of FIGURE 3.

FIGURE 5 is a transverse sectional view illustrating the relationship between the closure opening and associated closure abutment and plug opening and abutment when a fine spray is desired.

FIGURE 6 is a transverse sectional view illustrating the relationship between the closure opening and associated closure abutment and plug opening and abutment when a heavy spray is desired.

FIGURE 7 is an elevational view of a preferred embodiment of the plug employed in the dispensing device of this invention.

As shown in FIGURE 1, amaterial reservoir 1, which may comprise a flexible walled container fabricated of plastic material, is provided with a material outlet assembly 2. As shown in FIGURES 2 and 3, outlet assembly 2 includes sleeve means 3 which has a generally cylindri cal configuration. Outlet means comprising acylindrical plug 4 having an annular rim 5 in abutting relationship with the periphery of sleeve means 3, is mounted snugly within the sleeve in the manner generally shown in FIG-URE 3.

Plug 4 has acylindrical portion 6 having an outer diameter corresponding closely to the inner diameter ofsleeve 3. As shown,plug 4 is coaxially arranged withinsleeve 3 so as to project partially therefrom. Theeffective securing of theplug 4 withinsleeve portion 3 may be facilitated by fabricating the sleeve and/or plug of a slightly yieldable material such as polyethylene or polypropylene, and at tolerances such that the plug may be simply forced axially under slight pressure into the sleeve position shown in FIGURE 3. Other means of securing the plug within the sleeve will readily occur to one skilled in the art. For example, the plug may contain an annular head which projects radially outwardly from the outerperipheral portion 6. The bead may then be received within an annular groove formed within the inner cylindrical periphery ofsleeve 3.

The upper end ofplug 4 is closed by atransverse wall 7 having an opening comprisingair channels 8 and 9 extgidin'g from a generallycylindrical mixing chamber 10.Air channels 8 and 9 admit air to the material reservoir upon release of the pressure developed in expelling the contents of the container. Air may also be admitted to the material reservoir in any of numerous other manners; for example, by employing perforations in the plug and cap at other convenient points.

The spray dispensing device shown in FIGURES 1, 2 and 3 includes a closure orcap 11. As illustrated,closure 11 is generally cylindrical in configuration and contains a series ofperforations 12 and 13 in its upper transverse wall, each perforation being of a different diameter. Closure 11 includes acylindrical portion 14 adapted to pass or move overplug 4 and to assume the position shown in FIGURE 3 so as to effectively covertransverse wall 7 ofplug 4. Cap 11 may be fabricated of flexible, semi-rigid or rigid material, such as plastic, metal or rubber.

As shown in FIGURE 3,plug 4 is coaxially and telescopingly arranged withinclosure 11. The effective securing ofplug 4 Withinclosure 11 may be accomplished through the use of anannular bead 15 which projects radially and inwardly from the cylindrical inner periphery ofclosure 11.Bead 15 is forced over asecond bead 16 in an axially locking manner, as illustrated in FIGURE 3;bead 16 extending radially outwardly from the outer periphery ofplug 4.

By fabricating the plug and/or closure of a slightly yieldable material such as polyethylene or polypropylene, theclosure 11 may be moved into engagement withplug 4 by merely forcing theclosure 11 axially overplug 4 untilbead 15 engagesbead 16 in the manner illustrated in FIGURE 3. In this relationship, thebeads 15 and 16 are engaged to such an extent as to provide a nominal axial locking and sealing action but not prevent the relatively free rotation ofclosure 4. As will be readily appreciated, this mode of assembly may be varied to a large extent. For example a groove-bead locking mechanism would function almost as effectively. In addition, either component may be fabricated of a relatively rigid or flexibly yieldable material.

The functional components are preferably protected from bacteria and the like by acap 20 when being shipped, stored or sold, and, in general, when not in use.

The mode of operation of the spray dispensing device becomes readily apparent. A flow of material from within thematerial reservoir 1 is passed upwardly through a longitudinally or axially extendingtubular passage 17 by exerting fingertip pressure to the flexible side walls of the material reservoir. The material is mixed with a suitable amount of air withinmixing chamber 10 and is forced out through a perforation inclosure 11 which is axially aligned withpassage 17 and mixing chamber ororifice 10. It will be appreciated that the intensity of the spray emerging from the perforation inclosure 11 will be governed by the diameter of the particular aligned perforation. Accordingly, the spray intensity may be controlled and varied by simply substituting orifices of different diameter.

The substitution of closure orifices is accomplished through rotation of theclosure 11. When theclosure 11 is rotated to the position shown in FIGURE 5, thereby aligning thesmaller diameter perforation 12 withmixing chamber 10, a fine spray is emitted throughperforation 12. On the other hand, whenclosure 11 is rotated in such a manner as to alignlarger diameter orifice 13 with mixingchamber 10, a heavy spray emerges. As pressure is released, air is admitted to thematerial reservoir 1 throughair passages 8 and 9.

The rotary alignment oforifices 12 and 13 is accomplished in the illustrated embodiment through the interaction of a first abutment means carried by theclosure 11 and second abutment carried byplug 4.

As shown in FIGURES 2, 3, and 6, the closurecarried abutment means comprises a generally rectangular, laterally extendingprotrusion 18, projecting radially inwardly from the innercylindrical surface 14 ofclosure 11. The abutment means includes surface means extending generally longitudinally and radially of the cylindrical axis ofclosure 11, such as surfaces 18(a) and 18(b).

The plug-carried abutment means comprises a pair of generally rectangular abutment portions 19(a) and 19(1)). Each such abutment portion projects laterally outwardly and generally radially from the outer surface of thecylindrical wall 19 of theplug 4.

With theplug 4 positioned withinclosure 11, as illustrated in FIGURES 3, 5, and 6, abutment means 19(a) and surface 18(b), and abutment means 19(b) and surface 18(a) will coact to limit the extent of rotary movement of theclosure 11. For example, engagement between surface 18(a) and abutment 19(1)) will properly alignsmaller diameter perforation 12 with mixingchamber 10, as illustrated in FIGURE 5; while engagement between surface 18(b) and abutment 19(a) will accurately alignlarger diameter orifice 13 with mixingchamber 10, as illustrated in FIGURE 6, thereby causing a heavier spray to emerge from the dispenser.

In describing the structure and operation of the improved spray dispensing mechanism of the invention, the many advantages of the invention become apparent.

A spray dispensing mechanism has been provided by means of which a material may be sprayed at varying intensities by the simple expedient of rotationally manipulating a closure to a preset position.

A spray dispensing device has been provided which is adapted to function as either a heavy or a light spray dispensing device, either of which is positively determined merely through the rotational action of a structurally simple component which, through the utilization of a series of perforations associated wit-h a material mixing chamber, and abutments integral with the components, provides a functionally effective, conveniently fabricated device.

While the invention has been described with reference to a preferred embodiment, it will be readily apparent that its scope is such as to encompass additions, modifications, deletions, substitutions, and other changes without departing from the invention.

What is claimed is:

A spray dispensing device comprising: A material reservoir having an opening therein; a plug associated with said opening and having a mixing orifice in its uppermost end; said plug also having a plurality of air passageways in its upper end; said passageways being rectangular continuations of said mixing orifice that extend laterally outwardly therefrom; said orifice and said passageways providing an area for mixing air and material to be dispensed to produce a spray; said :air passageways further being provided to admit air into said reservoir via said plug; said plug further being defined by having a vertical indentation partially around its periphery; and a closure adapted to telescope over at least a portion of said plug and rotatably engage said plug; said closure having a plurality of perforations in its upper end, each of which is adapted to be individually aligned with said mixing orifice by rotation of said closure and each of which when aligned, is capable of delivering a different intensity spray; said closure further having abutment means extending laterally inwardly from the inner cylindrical surface of said closure; said laterally extending means =co-acting with the terminal ends of the veutical indentation in said plug to limit 'ro taiti-onal move ment of said closure and to align said perforations with said mixing orifice.

References Cited by the Examiner UNITED STATES PATENTS 2,764,453 9/1956 Robb et al. 239327 2,924,393 2/1960 Robert 222553 X 3,083,872 4/1963 Meshberg 222553 X 3,170,633 2/1965 Castelli 239- 327 EVON C. BLUNK, Primary Examiner.

CHARLES R. CARTER, Examiner.

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