Fluid sprinkling – spraying – and diffusing – Including supply holder for material – Fluid pressure discharge means
Patent
1994-11-21
1996-05-14
Weldon, Kevin P.
Fluid sprinkling, spraying, and diffusing
Including supply holder for material
Fluid pressure discharge means
239543, B05B 126
Patent
active
055160450
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The invention relates to a pushbutton, intended to be fitted on a valve or pump equipping a dispenser, to allow, through action on this pushbutton, the liquid contained in the dispenser to be sprayed through at least two spray nozzles provided in the pushbutton and connected to a central channel of this pushbutton, each nozzle having an axis oriented substantially transversely with respect to the axis of the central channel of the pushbutton.
BACKGROUND OF THE INVENTION
U.S. Pat. No. 3,406,913 shows a pushbutton of this type in which two spray orifices with oblique, non-concurrent axes are provided so that the fluid jets ejected through each orifice are tangential or substantially tangential in order to create turbulence capable of breaking up the particles or agglomerations of liquid or of solid.
The German utility model DBGM 70 42 354 describes a pushbutton with two superimposed outlet orifices of parallel axes. The cloud of spray obtained with such a pushbutton needs to be improved, especially as regards its homogeneity and the symmetry in terms of density.
FR-A-2,067,520 describes a pushbutton of which the central channel splits into two separate radial channels located in one and the same plane perpendicular to the central channel and forming between them an angle of 60.degree. to 90.degree. approximately, this arrangement allowing the product to diffuse through a wide solid angle, thus reducing the sweeping motion to be carried out in order to distribute the product.
OBJECT OF THE INVENTION
The object of the invention, above all, is to provide a pushbutton which, while remaining simple and easy to produce, makes it possible to increase the spray impact surface whilst maintaining good distribution, as homogeneous as possible, of the sprayed product, and to obtain a less wetting result.
SUMMARY OF THE INVENTION
To make it possible to achieve this objective, according to the invention, a pushbutton of the sort defined previously, the axes of the spray nozzles of the pushbutton being situated in one and the same plane, is characterized in that the axes of the spray nozzles between them form an angle lying between 1.degree. and 40.degree., and the nozzles are supplied via two conduits with parallel axes.
The impact surface of the cloud of spray is formed by the intersection of two disks, with a less wetting effect, especially when spraying the hair with lacquer is involved.
For preference, the angle of the axes of the nozzles of the pushbutton lies between 16.degree. and 24.degree..
Advantageously, the plane of the axes of the spray nozzles is orthogonal to the axis of the central channel of the pushbutton. The nozzles may consist of independent pieces attached to the pushbutton; the axes of the conduits are situated in a plane substantially orthogonal to the axis of the said central channel.
Thus, the angle between the axes exists solely at the orifices of the spray nozzles, whilst the conduits provided in the pushbutton are parallel, which facilitates the molding and demolding operations.
Each conduit communicates with an annular chamber bounded by a post-like element of which the front face, against which the corresponding nozzle rests, is oblique relative to the axis of the conduit in question; the obliqueness of the faces is intended so that the desired angle might be obtained at the nozzles.
The internal face of each nozzle is parallel to the external face of each post-like element of the pushbutton and the orifice of each nozzle has its axis perpendicular to this external face.
The two nozzles may be connected by a middle part and form a single piece.
Each nozzle may include swirl-inducing supply channels which are advantageously positioned such that the supply channels of the pushbutton emerge at equal distances from two swirl-inducing channels, especially for the purpose of producing homogeneous clouds of spray.
For preference, the pushbutton includes, in its middle region, a projecting part pointing toward the inside so as to divide the flow of liquid into two eq
REFERENCES:
patent: 1957862 (1934-05-01), Taylor
patent: 2997243 (1961-08-01), Kolb
patent: 3045925 (1962-07-01), Giangualano
patent: 3406913 (1968-10-01), Frangos
patent: 3767125 (1973-10-01), Gehres et al.
patent: 3785571 (1974-01-01), Hoening
patent: 4941594 (1990-07-01), Montaner et al.
"L'Oreal"
Weldon Kevin P.
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