Fluid dispenser device

#The present invention relates to a manually-actuated device for dispensing fluids in liquid or powder form.

#A liquid or powder dispenser device, in particular for dispensing fluids in the fields of pharmaceuticals, cosmetics, perfumes or the like, generally comprises a fluid reservoir, a dispensing member, such as a pump, for dispensing the fluid contained in the reservoir, and a dispensing head incorporating a dispensing orifice. An actuating system is generally also provided for actuating said pump. A problem that can arise with liquid or powder dispenser devices of this type relates to the period of time that elapses between the end of the device being assembled, and the occasion on which the user actually uses it. During that time lapse, it is necessary to prevent the dispensing orifice from becoming clogged or soiled, and to prevent the device from being actuated accidentally. Those problems are generally solved by providing a removable cap on the dispensing head, and a system for locking the device, which system prevents any accidental actuation of the device. For example, that may be achieved by means of a break-off strip or by means of a latch element to be moved out of the way prior to use. Although such systems are effective, they suffer from some drawbacks. The removable cap might be lost when it is removed from the dispensing head, so that the problem of the dispensing orifice becoming clogged can then arise after the first occasion on which the device is used, e.g. when the dispenser device is to be carried about in a handbag or the like. Similarly, safety systems for preventing the device from being actuated accidentally while it is being stored or carried can be complex and therefore costly to make, and they are not always entirely reliable.

#An object of the present invention is to provide a liquid or powder dispenser that does not suffer from the above-mentioned drawbacks.

#Other characteristics and advantages of the present invention will appear more clearly on reading the following detailed description of one embodiment of the invention, given with reference to the accompanying drawings which are given by way of non-limiting example, and in which:

#FIG. 1 is a diagrammatic perspective view of a liquid or powder dispenser device in a first embodiment of the invention, with the cap in a rest position;

#FIG. 2 is a partially cut-away diagrammatic perspective view of the device of FIG. 1, with the cap in an intermediate position; and

#With reference to the Figures, the device of the invention for dispensing a fluid in liquid or powder form comprises a fluid reservoir 10 on which a dispensing pump 20 is assembled, the dispensing pump itself being connected to a dispensing head 30 provided with a dispensing orifice 31. An actuating system 40 is provided for actuating said pump 20. In the invention, the device includes a captive cover 50 which is mounted to move between a rest position (shown in FIG. 1) in which it covers the dispensing orifice 31 and prevents the pump 20 from being actuated, and an in-use position (shown in FIG. 3) in which it uncovers the dispensing orifice 31 and enables the pump 20 to be actuated.

#FIGS. 1 to 3 show an advantageous embodiment of the present invention. The cap 50 is part of the actuating system 40 in that, by moving towards its in-use position, the cap 50 causes the pump 20 to be actuated. Therefore, when the cap 50 is in the rest position, it is impossible to actuate the pump 20, it being necessary for the user to move said cap 50 into its in-use position in order to actuate said pump. Advantageously, as shown in the figures, the cap 50 may be organized such that it moves along two different paths to go from its rest position to its in-use position. More precisely, the example shown shows a cap 50 that moves in radial translation to uncover the dispensing orifice 31, as shown in FIGS. 1 and 2, then in axial translation under the effect of the user pushing on the cap to actuate the pump 20. As can be observed in FIG. 3, the cap 50 being moved axially between the position shown in FIG. 2 and the position shown in FIG. 3 causes the actuating system 40 to be actuated, thereby causing a metered quantity or “dose” of fluid to be dispensed through the dispensing orifice 31. Naturally, the cap 50 may move in different ways to go from its rest position to its in-use position, e.g. in rotation or in a combination of rotation and of translation.

#The cap 50 may include resilient return means that return it to its rest position after the device has been used. In a variant, it is possible to imagine that the user manually returns said cap to its rest position. Moreover, the invention is described above with reference to a liquid or powder dispenser device in which the dispensing direction is axial relative to the central axis of the pump and of the reservoir, but it is equally applicable to all types of dispenser device, and in particular to those that include a dispensing head having a radial dispensing direction. Furthermore, although the present invention is particularly well suited to liquid or powder dispenser devices having side actuating systems, it is not limited to this type of system, and indeed it is applicable to all suitable types of actuating system.