Abstract:
A liquid dispenser comprises a pumping assembly attached to a liquid storage container. The pumping assembly includes an outlet port for dispersing liquid from the container. The outlet port includes a plurality of channels that communicate with a plurality of orifices through which a liquid is dispensed to an exterior of the storage container. The orifices arranged are in two series of concentric rings.

Description:
BACKGROUND OF THE INVENTION 
     This invention relates generally to liquid dispensers and, more particularly, to a portable dispenser for evenly dispensing a liquid from multiple dispensing nozzles. 
     Dispensing devices are commonly used for delivering a variety of substances such as soaps, lotions, cleaning solutions, chemicals, and the like. Various liquid dispensers exist which employ a manually actuated pump mechanism for forcing a volume of liquid from an intake chamber to a single outlet nozzle such as an aerosol spray nozzle. Although assumably effective in operation, such devices are not sufficiently adapted for a dispensing application requiring a liquid to be dispensed simultaneously from a plurality of nozzles. 
     Therefore, it is desirable to have a liquid dispenser that dispenses a predetermined quantify of a liquid through a plurality of nozzles simultaneously. It is further desirable to have a dispenser that is manually actuated when pressure is applied to a cap portion of a container. 
     SUMMARY OF THE INVENTION 
     Accordingly, I have invented a liquid dispenser which utilizes a pumping assembly mounted to a liquid storage container. The pumping assembly includes an outlet port connected to a plurality of channels housed within a cap portion of the dispenser. The cap portion includes a top surface having a plurality of nozzles extending therethrough with each nozzle being coupled to one of the channels. Each nozzle presents a relatively narrow diameter for constricting liquid being dispensed therethrough such that the liquid is dispensed uniformly. 
     It is therefore a general object of this invention to provide a liquid dispenser which dispenses liquid through multiple nozzles simultaneously. 
     Another object of this invention is to provide a dispenser, as aforesaid, which dispenses liquid uniformly through each nozzle. 
     A further object of this invention is to provide a dispenser, as aforesaid, which draws liquid into an intake chamber from a reservoir and then pumps the liquid from the chamber through the nozzles upon user actuation of a pump assembly. 
    
    
     Other objects and advantages of this invention will become apparent from the following description taken in connection with the accompanying drawings, wherein is set forth by way of illustration and example, an embodiment of this invention. 
     BRIEF DESCRIPTION OF THE DRAWINGS 
     FIG. 1 is a perspective view of the liquid dispenser according to the present invention; 
     FIG. 2 is a top view of the dispenser of FIG. 1; 
     FIG. 3 is a sectional view of the dispenser taken along line 3--3 of FIG. 2 with the plunger in a rest position; and 
     FIG. 4 is a view of the dispenser of FIG. 3 with the plunger in a compressed position. 
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENT 
     Turning more particularly to the drawings, FIG. 1 shows the preferred embodiment of the liquid dispenser 10. The dispenser 10 includes a bottle-shaped liquid container 20 constructed of polypropylene, polyethylene, or any other suitable material. The container 20 includes a generally rectangular base 25 which allows the container 20 to be positioned in a stable, upright position during storage or use. A neck portion 30 is fixedly attached to the container 20 and includes a bottom wall 32, an upstanding cylindrical side wall 34 extending therefrom and an open top (FIGS. 3 and 4). The dispenser 10 further includes a cap or cover 40 having an upstanding cylindrical side wall 42 normally extending from a bottom wall 44. A concave or bowl shaped top surface 50 extends between edges of the cap side wall 42 to prevent spillage of a liquid dispensed from the container 20. The cap side wall 42 presents a diameter that is slightly smaller than the diameter of the side wall 34 of the neck portion 30 such that the cap 40 is slidable therein. 
     The dispenser 10 further includes a pump assembly 60 for pumping liquid from the container 20. Preferably, a reciprocating piston pump is utilized although other pumping means are known in the art. The pump assembly 60 includes a plunger 62 that is movable within a cylindrical barrel 70, the barrel 70 forming an intake chamber 76. The barrel 70 extends through an aperture in the bottom wall 32 of the neck portion 30 and includes a flange 72 fixedly attached thereto. The plunger 62 includes a lower end 64 and an upper end 66 with a passage 68 extending axially therebetween. The lower end of the passage 68 lies immediately adjacent the intake chamber 76 and selectively communicates therewith as to be further described below. 
     The cap 40 includes a plurality of channels 52, the upper end of each channel 52 being coupled to a separate nozzle or orifice 54 extending through the upper surface 50 of the cap 40 (FIGS. 2 and 3). Lower ends of the channels 52 are joined into a singular channel connector 56 that is fixedly connected to an outlet port 58. The outlet port 58 includes a bore for communicating the passage 68 with the singular channel connector 56. The bottom wall 44 of the cap 40 includes a hemispherical flange 48 that is releasably coupled to the upper end 66 of the plunger 62. 
     The nozzles 54 are spaced apart about an imaginary central longitudinal axis extending through the cap 40. A first/inner series or circle of nozzles 54a is positioned substantially adjacent the central longitudinal axis and a second/outer series of nozzles 54b is positioned adjacent the peripheral edge of the top surface 50. The series thereby form concentric circles about the longitudinal axis. Each nozzle 54 presents a relatively small diameter to constrict liquid dispensed therethrough. It is understood, however, that nozzles 54b within the second/outer series present diameters smaller than the diameters of nozzles 54a within the first/inner series such that liquid is dispensed with equal velocity through all nozzles 54 regardless of the fact that the length of the channel 52 transmitting liquid from the pump assembly 60 to a second series nozzle 54b is longer than that of a first series nozzle 54a. 
     When pressure is exerted on the cap 40, the cap 40 forces the plunger 62 downward within the barrel 70 (FIG. 4). As the plunger 62 extends downwardly, the intake chamber 76 decreases in volume and correspondingly increases the pressure therein. An inlet valve 80 provided at the lower end 74 of the barrel 70 closes under this increase in pressure to prevent liquid from being drawn into the intake chamber 76 from the container 20. The increase in chamber pressure, however, causes the outlet valve 82 at the lower end 64 of the plunger 62 to open, thus placing the intake chamber 76 in communication with the passage 68. Liquid previously held within the intake chamber 76 is then delivered under pressure through the outlet port 58 and channels 52 to the cap nozzles 54. The plurality of nozzles 54 allow a large or wide surface area to be uniformly covered with the liquid, e.g. a cloth used for cleaning. 
     When the plunger 62 is fully depressed or pressure is released from the cap 40, a compression spring 78 pushes the plunger 62 in an upward direction, returning the dispenser to its FIG. 3 configuration. This return movement of the plunger 62 causes an increase in the volume of the intake chamber 76 and causes the outlet valve 82 to close. As the plunger 62 is drawn upward within the barrel 70 with the outlet valve 82 closed, a negative pressure or vacuum is created which draws liquid into the intake chamber 76 through the siphon tube 84 and inlet valve 80. With the intake chamber refilled, the liquid dispenser 10 is again ready to be actuated. 
     Accordingly, it can be seen that the liquid dispenser 10 can dispense a liquid from a container 20 to a plurality of nozzles 54 simultaneously and uniformly according to manual actuation of a pump assembly 60. 
     It is understood that while certain forms of this invention have been illustrated and described, it is not limited thereto except insofar as such limitations are included in the following claims and allowable functional equivalents thereof.