US 3897890 A
The invention disclosed is for an automatic dispenser which may be operated in special environments without need for hand touching the dispenser. The dispenser includes a foot-operated pneumatic pump which is in communication with an expandable diaphram. Upon expanding, the expandable diaphram forces a dispensing nozzle engaging plate onto the exit spout of an aerosol container containing a dispensable composition and thereby the contents of the aerosol container are released through the dispensing nozzle.
Description (OCR text may contain errors)
United States Patent [191 Jente AUTOMATIC DISPENSER  inventor: Richard Charles Jente. Ladue. Mo
 Assignee: W. R. Grace & (10., New York.
221 Filed: Jan. 10, 1974 211 Appl.Noi:432,774
 US. Cl. i. 222/179 [5 1] Int. Cl. B67D 5/06  Field of Search H 222/174 179. I80. 340. 222/383, 394
 References Cited UNITED STATES PATENTS 2194236 8/1942 Levernier i. 222/179 Meuwl ZZZ/I74 5] Aug. 5, 1975 1203.597 3/[965 Birch i i i v 322/179 PH-HIUI') E.\'cmn'nw'Robert B. Reeves Assistant EltlHl/Ht'l-L2ll'l') H. Martin AHUI'IIL)" AKCHL 0r Firm-Eugene M. Bond [5 7] ABSTRACT The invention disclosed is for an automatic dispenser which may be operated in special environments without need for hand touching the dispenser. The dispenser includes a foot-operated pneumatic pump which is in communication with an expandable diaphram. Upon expanding, the expandable diaphram forces a dispensing nozzle engaging plate onto the exit spout of an aerosol container containing a dispensable composition and thereby the contents of the aerosol container are released through the dispensing nozzle 2 Claims, 5 Drawing Figures SHEET PATENTED WY; 51975 SHEET PATENTED M16 5 I975 SHEET PATENTEU m W5 2 f I h H w m m www AUTOMATIC DISPENSER This invention relates to an automatic dispenser which may be foot operated. More particularly, the present invention relates to an automatic dispenser which by means of a foot-operated pneumatic pump acturates an expandable diaphram which forces a dis pensing nozzle engaging plate onto the exit spout of an aerosol container. The present device has special utility in dispensing antiseptic compositions in medical environments and thereby avoids hand contact and bacterial contamination by operating personal.
Numerous devices are known to the art for dispensing various materials from aerosol containers. Typically, these devices are hand operated and relatively complex. It is well known that along need has been experienced by this art for a simple, highly efficient, foot operated dispenser which has utility such as in medical environments where hand contamination by bacteria must be kept to a minimum during and following a surgical scrub or for other applications in which hand activation to dispense from an aerosol container is undesirable inconvenient, or not feasible.
In the drawings:
FIG. I is a perspective view illustrating the device of the present invention.
FIG. 2 is a side elevational thereof.
FIG. 3 is a partial side view illustrating the operation of the present device in non-dispensing position.
FIG. 4 is a similar view to that of FIG. 3 except illustrating the device in dispensing position.
FIG. 5 is a partial side elevational view taken in section and illustrating means for supporting an aerosol container.
Referring to the figures wherein all similar elements are represented by the same numbers throughout the several views, FIG. 1 illustrates dispenser I0 which includes support 12, or other wall surface as desired, aerosol container 14 with cap 16, aerosol container support I8 having upper and lower 22 gripping members. Housing 24 at the upper area of dispenser 10 includes a dispensing nozzle assembly 26 which is retained in position by removable wire spring 28. The dispensing nozzle assembly 26 is in pneumatic communication with foot-operated pneumatic pump 30 by means of tubing 32.
FIG. 2 illustrates the various elements of FIG. I as they appear in combination ready for dispensing. Channel 34 is provided within the back portion of aerosol container support 18 and provides a means for passing tubing 32 to the dispensing nozzle assembly 26 for operation thereof upon depression offoot-operated pneumatic pump 30.
FIGS. 3 and 4 illustrate operation of the present dispenser except taken in partial perspective view and having cap 16 removed for purposes of discussion. In normal position. i.e., FIG. 3, the pneumatic transmitting tubing 32 joines expandable diaphram 36 by elbow 34. Dispensing nozzle engaging plate 38 having a cupshaped configuration is retained in position within housing 24 by means of wire spring 40 which secures within notched section 42 and two similar notched sections near the rear and about the periphery of housing 24. Alternatively. notched section 42 may be a horizontal angular groove around the perimeter of housing 24.
In operation, FIG. 4, pneumatic pressure via line 32 causes expandable diaphram 36 to expand into the cup shaped configuration and while confined between nonmovable surface of housing 24 and movable dispensing nozzle engaging plate 38, causes the latter to move downwardly with projection 45 moving onto container valve stem 44 and limiting flange 46. Depression of container valve stem 44 causes contents within aerosol container I4 to pass into connecting nozzle 48 from which it is discharged.
Housing 24 and removable wire spring 40 permits the dispensing nozzle assembly 26 consisting of elements 38, 45 and 48 which may be one or more separate parts, to swivel laterally in a horizontal arc for the convenience of the user and so that the dispensing spout may be swung out of the way when not needed. The socket at the center of 46 is made to a friction fit be tween the valve stem of the aerosol can and the piston. The upper face of this valve stem impinges upon the lower face of the socket to make a more complete seal when the diaphragm is expanded to dispense from the aerosol container. Downward pressure of 45 must overcome the pressure of the return spring inside the aersol can, causes the valve stem to rise, closes the internal valve in the aerosol can, and stops the flow from the aerosol container.
FIG. 5 illustrates how an aerosol container, in phantom, may be supported by support I8. An upper edge of the container is retained by gripping member 20 while a lower edge of the container is retained by spring biased gripping member 22. The latter member. i.e., 22, is vertically adjustable within supports 50 and a wall surface of support 18. Spring 52 connecting an upper flange of member 22 and a secured portion 54 of the support 18 provides the means for spring biasing member 22. Although FIG. 5 illustrates a preferred mounting, alternative mountings are available and may be effectively used such as clamps, clips or related retaining devices to hold the aerosol Container in vertical alignment.
The present device may be secured either to a selfsupporting stand or otherwise to a wall surface by most any suitable means as desired.
The various elements of the present apparatus unless otherwise indicated, may be secured to adjoining elements by any suitable means such as bolts, welding, rivets or the like. In addition, auxiliary support or reinforcement members may also be included as part ofthe apparatus where required.
Although a preferred embodiment of the invention has been illustrated herein, it is to be understood that various changes and modifications may be made in the construction and arrangement of elements without departing from the spirit and scope of the invention as defined.
What is claimed is;
l. A dispenser which comprises in combination, a foot-operated pneumatic pump, an expandable diaphram, tubing connecting in fluid communication the foot-operated pneumatic pump and the expandable diaphram, a housing containing the expandable diaphram, a dispensing nozzle engaging plate having a cup-shaped upper configuration containing said diaphram within the housing and movably disposed relative to said diaphram, said housing having notched sections near a lower portion thereof, a wire spring engaging said notched sections and disposed to retain the dispensing nozzle engaging plate within the housing, said plate disposed in contact with an aerosol valve stem enoperated pneumatic pump and causing the diaphram to downwardly depress the valve stem by means of the dispensing nozzle engaging plate and the aerosol valve stem engaging member.
2. The dispenser of claim l wherein a cap is disposed between the upper portion of the aerosol container and the dispensing nozzle engaging plate.
* a r a a