GB2259739A

GB2259739A - Dispensing device

Info

Publication number: GB2259739A
Application number: GB9213812A
Authority: GB
Inventors: Trevor Smith
Original assignee: Stag Ltd
Current assignee: Stag Ltd
Priority date: 1991-06-29
Filing date: 1992-06-29
Publication date: 1993-03-24
Anticipated expiration: 2012-06-29
Also published as: GB9213812D0; GB2259739B

Abstract

The device dispenses a dose of material, such as a perfume or deodorant, automatically on closing a door. The device comprises a holder 1 adapted to be fixed to a surface, such as a door, and an arm 4, 5 extending therefrom, the arm being hinged at a point 6 along its length. The holder is able to accommodate a storage container and a dosage chamber with associated valving. This combination may take the form of either an aerosol or a container with a small pump (Fig. 5). In operation the hinged portion is folded back A onto the holder such that this portion is pressed towards the valves or container during door closure (as a result of relative movement between, for example, a door and its jamb) to push the aerosol or pump to activate delivery of the dose. Ribs 7 on the arm act to bias the two parts of the arm apart. <IMAGE>

Description

DISPENSING DEVICE The present invention relates to a dispensing device.

More particularly, but not exclusively, it relates to a dispensing device which is adapted to be affixed in the region of a door so that a predetermined quantity of material, preferably of a fragrant or deodorising nature, is dispensed whenever the door is closed.

The present invention has particular relevance to deodorising devices for use in bathrooms and or rubbish stores, although other uses may be forseen.

It is well-known to provide hand-held aerosol cans of deodorant material or fragrant material and these are often used. However, they must be used manually and this is not always done. It is an object of the present invention to provide a device which dispenses such material automatically whenever the door of the room is closed. This frees users from the need from regular spraying and ensures that the room remains sweet-smelling.

According to the present invention, there is provided a device for dispensing a dose of material automatically on closing a door, comprising a storage container for the material, a dosing compartment, actuator means for releasing the contents of said dosing compartment to the surroundings, first valve means for closing communication between the storage container and the dosing compartment after the compartment is filled, second valve means for opening comlllullical::ion bcewocn the dosing compartmont and the surroundings and being operable only when said first valve means is closed, actuating means to actuate said second valve means, said actuating means comprising a holder for said container adapted to be fixed to said door or a jamb thereof, an arm so extending radially from said holder and being so hinged biasedly at a median point that a furthermost portion of said arm is adapted to contact said container or said second valve means to actuate said second valve means when the hinged furthermost portion of the arm is moved against said bias in a gap between the door and the jamb thereof.

Preferably, the arm is of plastics material and the hinge comprises a portion thereof which is thinner than remaining portions of the arm.

The arm may be provided with longitudinally extending ribs, in which case the ribs on each portion of the arm co-operate to bias the hinge towards an unfolded position.

The second valve means may comprise a pump which is primed by said actuating means, in which case the pump is contacted by the arm.

Alternatively, the container may contain said material and a compressed gas, in which case the arm is adapted to contact a base of the container while the second valve means is restrained, whereby relative movement between the container and the second valve means causes the latter to open.

The holder may be provided with one or more apertures to allow egress of the material.

Embodiments of the present invention will now be more particularly described by way of example and with reference to the accompanying drawings, in which: FIGURE 1 is a schematic side elevation of a holder for use with an aerosol can dispenser for the material; FIGURE 2 is a perspective view showing a hinge portion of an arm of the holder; FIGURE 3 is perspective view of the holder showing the Figures 1 and 2; FIGURE 4 shows a second embodiment of holder for use with a pump action dispensing container; and FIGURE 5 is a cross-sectional view of a proprietary pump for use with a container in the invention.

Referring now to the drawings, there is shown a holder for a device embodying the invention. The device is intended to dispense material which is preferably fragrant or deodorising, but other materials could be used. The holder 1 is dimensioned to receive either an aerosol can of e.g. air freshener or a container of material which is able to dispense the material by means of a pump action mechanism such as shown in Figure 5.

The essential difference between the first and second embodiments of the invention is that, for use with an aerosol can, they are provided holes 2 in the holder 1 to allow egress of the material and these are disposed at a lowermost portion of the holder 1. In the case of the second embodiment, which concerns a pump action mechanism, the hole 3 is peferably disposed at an upper portion of the holder 1. The reason for this is that the actuator, to allow release of material from the container, is operated by downward pressure thereon.For reasons which will become apparent below, it is preferred that a pump action mechanism is placed so that the pump action mechanism is at the uppermost end of the container and is acted on directly by an actuator, whereas in the case of an aerosol can, it is preferred that the actuator button is held steady while pressure is applied to the can to cause relative movement therebetween.

Attached to the holder 1 extending substantially radially therefrom is an arm 4, 5, the two parts of which are hinged at point 6. This is a conventional plastics hinge, formed by a thinning of the plastics material at this point 6. The dimensions of the arms are such that arm 5, when folded back on arm 4, is able to contact either the valve of a pump action mechanism or the base of the container of aerosol.

At least the furthermost, hinged portion of the arm 5 is provided with ribs 7. These co-operate preferably with ribs 7 on the innermost portion of the arm and act to bias the two parts of the arm apart. In this condition, the outermost portion of the arm 5 does not contact the container and therefore the valve remains closed.

The apparatus is intended to be mounted to a door or on or adjacent to a jam or frame thereof and to be so disposed that closing the against the jam causes the arm portions 4 and 5 to come together against the bias, whereby the outermost portion 5 of the arm is urged into contact with either the valve or the container and thereby releases a dose of material into the surroundings.

The container contains a chamber which holds a predetermined quantity of material and this is automatically filled from the main container whenever the dosing chamber is emptied. Continued actuation of the valve does not cause excess material to be released since there is a valve between the main storage container and the dosing chamber which is only open when the exit valve is closed.

Thus, opening the door releases arm 5 from contact with the valve or container and allows the dosing chamber to be filled from the container. Closure of the door afterwards actuates the valve and allows release of the contents of the dosing chamber.

Because of the disposition of aerosol cans in the first embodiment of the invention, it is not usually possible to use conventional aerosol cans since these are provided with a dip tube which reaches down to the bottom of the can to allow the propellant to push the liquid upwardly through the tube to the valve. Aerosol cans for use in the present invention must not have such a dip tube so that the material may enter the dosing chamber directly under pressure from propellant which may be located upwardly thereof.

As may be seen from the drawings, the arm 5 rotates on the direction of arrow A when the door is closed or is closing and, while this exerts downward force on the container in the holder 1, there is also a component in a horizontal direction and this could cause problems with a standard aerosol can having a valve mechanism standing proud of the top. It has been found more efficacious to apply the pressure from the arm 5 to the base of the aerosol can, which is, overall, held steady within the holder 1.

Claims

1. A device for dispensing a dose of material automatically on closing a door, comprising a storage container for the material, a dosing compartment, actuator means for releasing the contents of said dosing compartment to the surroundings, first valve means for closing communication between the storage container and the dosing compartment after the compartment is filled, second valve means for opening communication between the dosing compartment and the surroundings and being operable only when said first valve means is closed, actuating means to actuate said second valve means, said actuating means comprising a holder for said container adapted to be fixed to said door or a jamb thereof, an arm so extending radially from said holder and being so hinged biasedly at a median point that a furthermost portion of said arm is adapted to contact said container or said second valve means to actuate said second valve means when the hinged furthermost portion of the arm is moved against said bias in a gap between the door and the jamb thereof.

2. A device as claimed in Claim 1, wherein the arm is of plastics material and the hinge comprises a portion thereof which is thinner than remaining portions of- the arm.

3. A device as claimed in either Claim 1 or Claim 2, wherein the arm is provided with longitudinally extending ribs.

4. A device as claimed in Claim 3, wherein the ribs on each portion of the arm co-operate to bias the hinge towards an unfolded position.

5. A device as claimed in any one of the preceding claims, wherein the second valve means comprises a pump which is primed by said actuating means.

6. A device a claimed in Claim 5, wherein the pump is contacted by the arm.

7. A device as claimed in any one of Claims 1 to 4, wherein the container contains said material and a compressed gas.

8. A device as claimed in Claim 7, wherein the arm is adapted to contact a base of the container while the second valve means is restrained, whereby relative movement between the container and the second valve means causes the latter to open.

9. A device as claimed in any one of the preceding claims, wherein the holder is provided with one or more apertures to allow egress of the material.

10. A device for dispensing a dose of material substantially as described herein with reference to the accompanying drawings.