Fluid dispenser

Details Fluid dispenser Fluid dispenser

2001-02-07

2003-03-18

Kaufman, Joseph A. (Department: 3754)

Dispensing

With lock or fastening seal

Inhibiting actuation of discharge assistant

C222S321700

Reexamination Certificate

active

06533144

ABSTRACT:

BACKGROUND OF THE INVENTION
The invention relates to fluid dispensers, and particularly though not exclusively to dispensers for liquid soaps and similar products.
Liquid soaps and products of a similar type are sold to consumers in a variety of different types of container. The soap or other product is typically contained in a container having a pump actuator head that is depressed to dispense the product onto the hand of the consumer. The containers can be a wide variety of shapes, and there are different actuator heads and pumping means available, but the dispensers all operate on similar principles, with the actuator head being depressed, the product being drawn up a feed pipe and dispensed through a nozzle in the actuator head onto the user's hand.
The dispensers are generally simple and convenient to use, but can cause problems when a consumer tries to operate the actuator head and dispense the contents with only one hand, with the other hand being possibly unavailable to provide support to the dispenser, possibly because of stickiness, greasiness or other problems, or simply where the user simply desires to use only one hand for dispensing the composition. In particular, many of the designs of dispenser container are not sufficiently stable, especially when they have been emptied to a significant extent, to enable a consumer to operate the actuator head without using the other hand to support the dispenser to prevent it tipping or moving during operation of the actuator head.
An advantage of the invention is to allow more effective one-handed operation of a fluid dispenser, in particular a pump actuated fluid dispenser.
The invention provides a manually actuated fluid dispenser comprising:
a container bottle having a neck portion;
a pump;
a pump actuator head mounted on the container neck portion; and
a support plate located adjacent the container neck portion below the pump actuator head.
Users generally operate fluid dispensers with the thumb or one or more fingers on one hand on the pump actuator head, whilst usually having to catch the dispensed fluid with the other hand, and optionally holding the fluid dispenser steady with the fingers of one or both hands. In the arrangement of the invention, the user may conveniently position one or more fingers or at least part of the palm of the hand to catch dispensed fluid and co-operate with operation of the pump actuator by the thumb of the same hand. In doing this, the dispenser is steadied by virtue of being effectively gripped by the compressive action of the thumb on the pump actuator, and the fingers and/or palm of the same hand on the support plate.
Alternatively although less preferred, the thumb may co-operate with operation by one or more fingers, the dispensed fluid being caught on part of the thumb or hand, with the dispenser being generally steadied in a similar manner. In either case, part of the hand or one or more of the fingers is employed under the support plate to hold the dispenser steady as the pump is actuated to dispense the product onto the same hand that the user is using to operate the pump.
The support plate may be advantageously formed from injection moulded plastics material.
Preferably the support plate comprises a separate collar portion which can be located adjacent or actually on the neck portion of the container, which has depending therefrom a projecting support plate portion. Advantageously the collar portion and the projecting plate portion are integrally formed together. According to a further envisaged embodiment though, the support plate may be integrally moulded with the container and located on or closely adjacent the neck portion of the container bottle, using for example conventional blow moulding techniques which are used to manufacture the container bottle itself. The support plate may conveniently be located within about 5 cm, more conveniently within about 3 cm of the bottom of the neck, i.e. where the neck of the container joins the container bottle.
In many embodiments the neck of the container will be a distinct and readily identifiable part of the container, often at or near the top of the container when it is stood in its normal manner on a horizontal surface. Often it takes the form of a substantially tubular opening through which the contents of the container may be dosed into and dispensed from the container. However in the absence of such a readily identifiable (e.g. tubular) portion, the neck of the container can be regarded as the opening through which the contents of the container are dosed and dispensed.
Preferably the projecting plate portion is sufficiently rigid so that it does not bend under the co-operating action of the fingers and thumb of the user.
Where the support plate is provided as part of a separate collar, preferably the collar is mounted on the neck portion of the container so that it does not move relative to the container bottle when the user operates the actuator head. Conveniently the support plate depends from only a portion of the periphery of the neck, though embodiments are envisaged where the support plate may entirely surround the periphery of the neck.
The support plate may take any of a variety of configurations, and may for example have minimal (e.g. 3 mm or so) width. It need not necessarily be generally planar (though it may be in preferred embodiments), as embodiments are envisaged where it may comprise for example a gently curved, generally smooth, downwardly pointing hook or lip. It is however important that it fulfils its functional requirements, which is to facilitate a compressive action between the part of the hand actuating the dispenser and the part of the hand onto which the dispensed substance is dispensed, whilst simultaneously allowing the dispenser to be steadied.
Typically the pump actuator head comprises an internal mounting recess for mounting the head on the neck portion, the recess having a region towards its lower edge having a diameter greater than the external diameter of the collar portion of the support plate such that the pump actuator head moves down over the collar when the head is depressed to dispense the product in the container bottle. However the alternative embodiment is specifically envisaged, in which on dispensing the pump actuator head moves within the collar on depression of the actuator head.
Preferably the support plate is mounted on the container in a position which is in general alignment with the pump actuator head when it is in the operable position. Many commercially available dispenser pumps operate in such a manner that the pump means, which in use is located inside the dispensing container (or the container neck), has its relative position releasably secured during assembly and manufacture of the commercial product. In use, to prime the pump for operation, it is necessary to release and reconfigure the pump actuator relative to the pump means. This may typically be done by depressing or raising the pump actuator from a first position relative to the secured pump means, and twisting the pump actuator by e.g. one quarter or one half of a turn to a second position. In the first position the pump cannot be depressed or actuated, whilst in the second it can.
According to this facet, an added advantage of the invention may lie in that the positioning of the support plate, which may provide an indication to the user of whether the actuator head is in an open position or a closed position. Particularly, when the dispenser is in the operable or open position, the dispenser head and the support plate may be in general alignment, whereas when the dispenser is in the inoperable or closed position, they are not. This can be used to simplify opening of the container, as the user does not have to consult instructions or consider which way to rotate the dispenser head to prime the container for use, but simply to rotate it to generally align with the support plate.
In an alternative arrangement, the support plate may take the form of a plurality (e.g. two, or possibly more) projecting plate porti

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