AU2009324259B1 - A hand-held dispensing device - Google Patents

Description

1 A Hand-Held Dispensing Device The present invention relates to a hand-held dispensing device for dispensing a sub 5 stance, in particular a substance in liquid form such as, for example, a nicotine formu lation for use in treating smoking dependence. Any discussion of the prior art throughout the specification should in no way be considered as an admission that such prior art is widely known or forms part of 10 common general knowledge in the field. It is known to provide hand-held dispensing devices for various substances, often where it is desired that the device be portable, for example in a handbag or pocket. Examples of such substances include perfumes and creams, as well as medical sub 15 stances such as inhaler spray formulations and nicotine formulations for use in treating smoking dependence. Often, the dispensing device will incorporate a dispensing mechanism in the form of a conventional aerosol dispensing mechanism or a spray pump mechanism, which is 20 actuated to dispense the contents of a dispensing chamber holding the relevant sub stance. There are a number of determining factors that might typically govern the design of such dispensers. For example, it may be desirable that the dispenser is manually oper 25 able using only a single hand; there may be a preference that the dispenser can be put into a "non-use" configuration, whereby accidental dispensing of the substance is pre vented; it may be desirable to ensure that the dispensing chamber is prevented from mechanical shock which might otherwise damage the dispensing chamber, with con sequent leakage of the substance; there may be a requirement, particularly in the case 30 of certain medical substances, that the dispensing device be provided with "child re sistant" features which tend to prevent operation of the dispensing mechanism by a child or accidental operation in general, for example when carrying the device in a pocket or handbag. 35 A number of the factors that determine the design of such dispensing devices are actu ally "competing" factors. For example, whilst it may be desirable that the device be pro- 2 vided with "child resistant" features, it is nevertheless desirable that the operation of the device is at the same time simple for adults to operate, including elderly people. This may be particularly important in the case of dispensing devices for medical substances, where it is desirable to reduce, or at least simplify, any accompanying instructions for 5 using the device in order to minimise confusion and consequent incorrect operation of the device. The design of hand-held dispensing devices can thus be a difficult balance between competing design factors, particularly when, often, the overriding aim is that the spe 10 cific design of the device is one which is compact, portable and lends itself to mass production. It is an object of the present invention to overcome or ameliorate at least one of the disadvantages of the prior art, or to provide a useful alternative. 15 According to the present invention there is provided a hand-held dispensing device for dispensing a substance, the device comprising a dispenser incorporating: i) a dispenser body defining a dispensing chamber for holding the substance; ii) an outlet in communication with the dispensing chamber; 20 iii) a dispensing mechanism for dispensing the contents of the dispensing chamber through the outlet and iv) an actuating member mounted for movement relative to the dispenser body to actuate the dispensing mechanism; the dispenser being operably connected to a handle for manual sliding movement rela 25 tive to the handle from a non-use position, in which the handle covers the outlet, to an operative position, in which the outlet is uncovered; the device further comprising a locking assembly for releasably locking the dispenser body to the handle in the operative position to prevent said manual sliding movement of the dispenser body, whereby a user may grasp the handle and effect manual move 30 ment of the actuating member relative to the handle and the dispenser body so as to actuate the dispensing mechanism and dispense the contents of the dispensing cham ber through the uncovered outlet.

2a Unless the context clearly requires otherwise, throughout the description and the claims, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is to say, in the 5 sense of "including, but not limited to". Preferably, the actuating member is resiliently mounted for movement relative to the dispenser body against the action of a biasing member wherein, with the dispenser in the operative position, a user may effect said manual movement of the actuating mem- 3 ber relative to the handle and the dispenser body, against the action of the biasing member. Preferably, the dispenser is operably connected to the handle for relative, manual, 5 sliding movement along a line of action of said biasing member, the biasing member maintaining the dispenser body and actuating member in substantially fixed, spatial relation to one another during said sliding movement from the non-use position to the operative position. 10 The locking assembly may be further configured for releasably locking the dispenser body in the non-use position to prevent said manual sliding movement of the dispenser to the operative position. In one embodiment, the actuating member is provided with a stop that engages an 15 abutment on the handle when the dispenser is in said non-use position for preventing actuating movement of the actuating member, relative to the dispenser body. The actuating member is preferably in the form of a dispenser head incorporating the outlet, the dispenser head being mounted at one end of the dispenser body for manual 20 depression relative to the dispenser body, against the action of said biasing member, to actuate the dispensing mechanism. The dispenser head may be configured to block the opening in the housing when the dispenser is retracted to said non-use position. The handle may be a hollow housing which slidably receives the dispenser for manual 25 sliding movement substantially along the axis of said depression of the dispenser head, the dispenser being manually slidable between said operative position, in which the dispenser head projects outwardly through an opening in the housing, and said non use position, in which the dispenser is retracted within the housing. 30 The dispenser head may be dimensioned to engage the housing in a telescopic fit, the length of the dispenser head being such that the dispenser head blocks the opening in the housing over the full range of manual sliding movement of the dispenser between said non-use position and said operative position. 35 In one embodiment, the section of the wall of the housing is cut-away adjacent the opening such that a user may manually engage the dispenser head directly in said re- 4 tracted, non-use position and effect manual sliding movement of the dispenser head, relative to the housing, to move the dispenser from the non-use position to the opera tive position, said biasing member maintaining the dispenser body and dispenser head in substantially fixed relation during said sliding movement. 5 The dispenser head may comprise a peripheral skirt defining a hollow interior head region communicating with the interior of the housing, the locking assembly comprising a locking lever mounted to the dispenser body at a fulcrum located inside the hollow interior head region, the locking lever having a latching element which is displaceable, 10 by pivotal movement of the locking lever, into and out of latching engagement with the housing. Conveniently, the locking lever is urged by a resilient element in the direction to dis place the latching element into latching engagement with the housing. 15 In a further embodiment, the peripheral skirt is provided with a window which is aligned with the cut-away section of the housing, whereby a user may apply manual pressure to the locking lever, through said cut-away section and the window in the peripheral skirt, to effect said pivotal movement of the locking lever against the action of the resil 20 ient element in the direction to displace the latching element away from latching en gagement with the housing. Optionally, a transmission plate is displaceably mounted on the peripheral skirt at the aperture, for transmitting to the locking lever said manual pressure applied to the 25 transmission plate. The transmission plate may be hingedly mounted on the exterior of the peripheral skirt and dimensioned for inward tilting movement through the window to engage the locking lever. Additionally, the transmission plate may be slidably mounted on the peripheral skirt for sliding movement relative to the window between an aligned position, allowing said inward tilting movement of the transmission plate through the 30 window, and a mis-aligned position, in which the edge of the aperture prevents inward tilting movement of the transmission plate through the aperture. The transmission plate may conveniently be resiliently biased towards said mis-aligned position and is slidable against the action of said bias into the aligned position. 35 The exterior of the housing may incorporate a flat face-section.

5 The dispensing mechanism may be a pump mechanism, whilst the outlet may be a spray nozzle. The dispensing chamber may contain a substance in liquid form, for example a nicotine 5 formulation or other formulation. Where the substance comprises a nicotine formulation, the dispenser body is prefera bly made from a material selected from one or more of or a mixture of glass, a copoly mer of acrylonitrile and methyl acrylate (Barex@), a cyclic olefin copolymer (COC), 10 polymers based on dimethyl-2,6 naphthalene dicarboxylate or 2,6-naphthalene dicar boxylic acid monomers, such as polyethylene naphthalate (PEN) and polytrimethylene naphthalate (PTN), liquid crystal polymers (LCP), preferably LCPs comprising hydroxy benzoic acid and hydroxy naphthalenic acid, said materials being optionally mixed with one or more of polymers, selected from polyacrylonitrile (PAN), polyamide (PA), poly 15 vinylidene chloride (PVDC), fluoropolymers, ethylene vinyl alcohol copolymer (EVOH), polyvinyl alcohol (PVA), ionomers, polyethylene (PE), polypropylene (PP) and poly ethylene terephtalate (PET). 20 In order that the invention may more readily be understood, embodiments of the in vention will now be described in more detail, by way of example, with reference to the accompanying drawings in which: FIGURE 1a is an exploded schematic view illustrating the principal components of a 25 dispensing device; FIGURE 1b is a perspective view showing part of the dispensing device of Figure 1 a; FIGURE 1 c is a perspective view showing part of the dispensing device of Figure 1 a; 30 FIGURES 2a to 2e are perspective views, partly in cut-away section, showing the as sembled dispensing device in a non-use configuration; and FIGURES 3a to 7e are perspective views, partly in cut-away section, illustrating step 35 by-step movement of the dispensing device from the non-use configuration to a dispensing configuration.

6 For the avoidance of any doubt it is noted that the Figures are exemplary and are not intended to limit the invention, but rather serve to illustrate one possible embodiment of the invention as set out in the appended claims. 5 Figure 1 a is an exploded view of a dispensing device 1, showing the principal sub components of the dispensing device 1. In overview, the dispensing device 1 comprises a housing 2 and a dispenser 3 slidably 10 received within the housing 2. The housing 2 is an elongate, hollow, body, open at one end and having a generally D shaped cross-section defined by a flat rear wall 2a (see Figure 2b) and a curved front wall 2b. A section of the flat rear wall 2a is recessed or "cut away" adjacent the open 15 end of the housing 2 such that the curved front wall 2b and flat rear wall 2a together form an irregular opening 2c (the shape of which is best appreciated by referring to Figure 2b). It should be appreciated here that the term "cut away" does not imply that the relevant section has necessarily been formed by cutting out a pre-existing section of the front wall. Indeed, the entire housing 2 may be formed in one piece (including the 20 cut-away section) by, for example, appropriate moulding of a suitable rigid plastics material. An elongate, generally vertical, central slot 2d is provided in the curved front wall 2b, opposite the "cut away" section of the rear wall 2a. A pair of smaller, square apertures 25 2e, 2f is positioned at the upper end of the central slot 2d, the apertures 2e, 2f being positioned either side of the central slot 2d, diametrically opposite one another. A sec ond pair of corresponding square apertures 2g, 2h is positioned at the lower end of the central slot 2d in like manner, such that the four apertures 2e, 2f, 2g, 2h are positioned at the four corners of a notional square (see Figure 2c). The rear wall 2a is provided 30 with a pair of guide slots 2i, 2j running parallel to one another and the central slot 2d, below the cut-away section of the rear wall 2a (see Figure 2b). The dispenser 3 comprises five principal sub-components: a dispenser body in the form of a phial 4, a dispensing mechanism in the form of a pump mechanism 5, a collar 35 6 for securing the pump mechanism 5 to the phial 4, a locking lever 7 and an actuating 7 member in the form of a dispenser head 8 (the dispenser head 8 itself being shown in exploded view in Figure 1a). The phial 4 is of a generally conventional shape comprising a main body portion 4a 5 having a D-shaped cross-section and defining a dispensing chamber for holding a sub stance, and a hollow, cylindrical neck portion 4b that defines an open 'mouth'. The phial 4 may be formed from any suitable material using any suitable method, for example by blow-moulding a plastics material or the like. In the case where the dis 10 pensing device is intended to hold a nicotine formulation, the corresponding dispensing body, for example the phial 4, is preferably formed from a "nicotine-inert" material that essentially does not absorb or react with the nicotine formulation and that also consti tutes a satisfactory barrier against migration of oxygen and water, for example glass, a copolymer of acrylonitrile and methyl acrylate (Barex@) or a cyclic olefin copolymer 15 (COC), and combinations thereof. Other suitable materials of which the phial 4 may be formed include materials selected from polymers based on dimethyl-2,6 naphthalene dicarboxylate or 2,6-naphthalene dicarboxylic acid monomers, such as polyethylene naphthalate (PEN) and polytrimethylene naphthalate (PTN), liquid crystal polymers (LCP), preferably LCPs comprising hydroxy benzoic acid and hydroxy naphthalenic 20 acid, and combinations thereof. Suitable materials also include the captioned materials mixed with one or more of other polymer(s), selected from the group consisting of poly acrylonitrile (PAN), polyamide (PA), polyvinylidene chloride (PVDC), fluoropolymers, ethylene vinyl alcohol copolymer (EVOH), polyvinyl alcohol (PVA), ionomers, polyeth ylene (PE), polypropylene (PP) and polyethylene terephtalate (PET). 25 The neck portion 4b incorporates a peripheral flange 4c of broadly rectangular shape but including a curved front edge 4d corresponding to the curved inner face of the front wall 2b of the housing 2. The front edge 4d is provided with a guide projection 4e and a pair of mounting projections 4f (of which only one mounting projection is visible in Fig 30 ure 1 a) respectively located on the opposite, shorter sides of the generally rectangular peripheral flange 4c. The pump mechanism 5 is of generally conventional construction and is shown only very schematically in partial cross-section in Figure 1a. The pump mechanism 5 com 35 prises an intake tube 5a (only the very top of which is visible in Figure 1a) for drawing liquid from within the main body 4a of the phial 4, a cylindrical pump housing 5b defin- 8 ing an internal pump chamber (not shown), communicating with the intake tube 5a, and a piston member 5c mounted for movement within the pump chamber, against a bias ing member in the form of coil spring 5d (shown in cross-section in Figure 1a), for dis placing the contents of the pump chamber up through a bore (not shown) in the piston 5 member 5c and out through the hollow stem portion of the piston member 5c in con ventional manner. The pump housing 5b is seated on the rim of the mouth of the phial 4, thus sealing the mouth of the phial 4, with the intake tube 5a extending down into the dispensing cham 10 ber defined by the body 4a of the phial 4. The collar 6 functions to clamp the pump mechanism 5 in the aforementioned sealing engagement with the mouth of the phial 4 and comprises a ring portion 6a and a pair of diametrically opposed arms 6b, 6c depending from the ring portion 6a. Each arm 6b, 6c 15 has a degree of resilience and is also provided with a respective aperture 6d, 6e at its lower end. The collar 6 is further provided with a pair of resilient secondary, legs 6f which terminate in respective ramp elements 6g (only one of which is visible in Figure 1 a) for locking the dispenser head 8 to the collar 6 in a manner described in more detail below. 20 In another embodiment the collar 6 has no arms 6b and 6c. Instead the inside of the ring portion 6a is provided with ribs located in parallel with the direction of movement of the piston member 5C. Said ribs engage under deformation with the pump mechanism 5. 25 To clamp the pump mechanism 5 to the phial 4, the pump housing 5b is first seated on the rim of the mouth of the phial 4 (with the intake tube 5a extending down into the phial 4) and then the collar 6 is pressed down over the top of the pump housing 5b with the arms 6b, 6c extending down either side of the pump housing 5b, whereby the arms 6b, 6c are resiliently deformed by the sides of the pump housing 5b before respectively 30 engaging with the mounting projections 4f in a "snap-fit". The pump housing is thus securely clamped between the rim of the mouth of the phial 4 and the ring portion 6a of the collar 6, with the hollow stem of the piston member 5c extending vertically upwardly above the ring portion 6a of the collar 6 (see, for example, Figure 2a).

9 Still referring to Figure 1a, the locking lever 7 comprises a pair of legs 7a, 7b depend ing from the ends of a connecting yoke portion 7c that extends perpendicularly to each of the legs 7a, 7b. 5 Each leg 7a, 7b incorporates a latching element in the form of a respective projecting "foot" 7d, 7e positioned at the distal end of the respective leg 7a, 7b, an inwardly pro jecting lug 7f, 7g, positioned at the "knee" of the respective leg 7a, 7b, and an elongate, resilient elements 7h, 7i extending rearwardly from the back of the "knee" of the re spective leg 7a, 7b and terminating opposite the "heel" of the respective projecting 10 "foot" 7d, 7e. The legs 7a, 7b are provided with sufficient resilience to allow "snap-fitting", rotating engagement of the lugs 7f, 7g with respective circular apertures 6d, 6e on the arms 6b, 6c of the collar 6, the locking lever 7 thus being secured to the collar 6 such that it may 15 rotate with respect to the collar 6, about an axis passing through the lugs 7f, 7g. The dispenser head 8 comprises a face portion 9, a cap portion 10 and a transmission plate 11. 20 The face portion 9 has a generally D-shaped cross-section, for telescopic, sliding en gagement within the housing 2, and is defined by a curved front wall 9a and a flat rear wall 9b. In similar manner to the rear wall 2a of the housing 2, the upper section of the flat rear wall 9b is "cut away" to form an irregular shaped opening 9c in the face portion 9 corresponding to the irregular shaped opening 2c in the housing 2. In addition, the 25 lower section of the curved front wall 9a is similarly "cut away". As best shown in Fig ures 2d and 2e, a pair of slide projections 9d is provided along the bottom edge of the outer face of the rear wall 9b for slidably engaging with the guide slots 2i, 2j on the rear wall 2a of the housing 2. In addition, a pair of ramp projections 9g is provided along the top edge of the inner face of the rear wall 9b (i.e. immediately below the cut 30 away section in the rear wall 9b) for locking engagement with the ramp elements 6g provided on the collar 6. The ramp elements 6g and the ramp projections 9g may be provided on other locations than those shown in the figures. An outlet 9e is provided in the front wall 9b. The outlet 9e, which may be any conventional spray outlet, is in fluid communication with a supply passage 9f formed as an integral part of the face portion 35 9 and extending back into the opening 9c.

10 The cap portion 10 comprises a flat rear wall 1Oa, dimensioned to fit the cut-away sec tion of the corresponding rear wall 9b of the face portion 9, and a cantilevered top por tion 1 Ob projecting from the upper edge of the rear wall 1 0a and having a D-shaped cross-section corresponding to the cross section of the face portion 9. 5 The cap portion 10 is fixedly fitted within the opening 9c of the face portion 9 such that the rear wall 1 Oa and rear wall 9b together form a peripheral skirt and the rear wall 1 Oa defines a stop in the form of a ridge 10c, the function of which will become clearer be low. 10 The rear wall 1 Oa (and hence the aforementioned peripheral skirt) is provided with an arched window 1Od, shown more clearly in Figures 1b and 1c. The upper, arched edge of the window 1Od is defined by a crescent-shaped shoulder 10e, recessed from the rear wall 10a, and the straight, lower edge of the window 1Od is provided with a hinged, 15 arched frame 1Of on the inside of the rear wall 10a, attached along the lower edge of the aperture 1 Od by means of a "living" hinge. The arched frame 1Of comprises: a straight frame section 1Og running along the lower edge of the arched window 1 Oc, a pair of parallel frame sections 1 Oh running parallel 20 with the straight sides of the arched window 1 Od, but spaced inwardly from the sides of the arched window 1Od, and an arched frame section 10i running along the inner edge of the shoulder 1Oe at the top of the arched window 1Od. The frame members 1Oh are each provided with a step 10j approximately one third of the way up the frame sections 1Oh (measured from the lower frame section 1Og). The steps 1Oj accommodate the off 25 set between, on the one hand, the lower edge of the arched window 1 Od and, on the other hand, the curved shoulder 10e defining the upper edge of the window, an upper region of the frame members 1 Oh thus being recessed from a lower region of the frame members 1Oh (see Figure 1b in particular). 30 A C-shaped sprung metal member 12 is fixedly attached to the lower frame section 1Og, the function of which will become apparent below. Referring now to the transmission plate 11, this has a similar outline shape to the arched window 1 Od. A step 11 a is formed on the inner face of the transmission plate 35 11, the step 11 a having a depth corresponding to the depth of the steps 1Oj on the frame sections 10h, but being positioned halfway up the inner face of the transmission 11 plate 11. The inner face of the transmission plate 11 is also provided with guide chan nels 11 b, for slidably engaging the parallel frame sections 1 Oh of the frame 1 Of, and with an arrangement of locating members 11 c positioned adjacent the step 11 a for lo cating the upper arm of the C-shaped sprung metal member against the underside of 5 the step 11a. The transmission plate 11 is slidably mounted to the hinged frame 10e by engaging the guide channels 11 b with the parallel frame sections 1 Oh, and the upper arm of the sprung metal member 12 is located against the underside of the step 10a using the 10 locating members 11 c. The transmission plate 11 can then be securely maintained in sliding engagement with the frame 1 Of by, for example, gluing the upper arm of the sprung metal member 12 in place against the underside of the step 11 a. Alternatively, the locating members can be configured to securely clip the transmission plate 11 to the sprung metal member 12, without the need for gluing. 15 In any event, with the transmission plate 11 fixedly attached to the upper arm of the sprung metal member 12, the sprung metal member 12 acts to resiliently bias the transmission plate 11 into the position shown in Figures 1 c and 2b, whereby the trans mission plate 11 bears against an edge of the rear wall 1 Oa formed by the recessed 20 shoulder 1Oe. With the transmission plate in this mis-aligned position, inward tilting movement of the transmission plate 11 is prevented by the shoulder 1 Oe. It will be appreciated, referring to 2b in particular, that in the aforementioned mis aligned position, the lower edge of the transmission plate 11 is spaced a distance x 25 from the lower edge of the arched window 1 Od. Similarly, referring to Figure 1 c, the step 11 a on the inner face of the transmission plate 11 is spaced a distance x above the steps 1Oj. The transmission plate 11 can thus be slid down a distance x, against the bias of the resilient sprung metal member, so that the transmission plate 11 abuts against the steps 10j and the lower edge of the arched window 10d. In this aligned po 30 sition, the curved upper edge of the transmission plate 11 clears the shoulder 10e, thus allowing inward tilting movement of the transmission plate 11 (supported on the hinged frame 1Of) through the arched window 1Od. The dispenser head 8 is mounted for movement relative to the phial 4 to actuate the 35 pump mechanism 5.

12 Specifically, the dispenser head is resiliently mounted on the pump mechanism 5 for actuating movement relative to the phial 4, against the action of the coil spring 5d, to actuate the pump mechanism 5 and dispense the contents of the phial 4 through the outlet 9e. 5 To mount the dispenser head 8, the dispenser head 8 is pressed down onto the pump mechanism 5 such that the down pipe of the supply passage 9f engages the hollow stem of the piston member 5c to form a closed passageway between the phial 4 and the outlet 9e, via the internal pump chamber in the pump mechanism 5. As the dis 10 penser head 8 is pressed down onto the pump mechanism 5, engagement of the ramp projections 9g and ramp elements 6g serves to "snap-fit" the rear wall 9b down over the collar 6 whereby the ramp projections 9g and ramp elements 6g subsequently limit upward movement of the dispenser head 8 relative to the collar 6 (and hence the phial 4). 15 To assemble the dispensing device 1, the various sub-components of the dispenser 3 may be assembled in the manner described above and then the dispenser 3 may be slidably engaged with the housing 2 by sliding the housing over the phial 4 and "snap fitting" the guide projection 4e and slide projections 9d within the central slot 2d and 20 guide slots 2i, 2j respectively (see Figures 2d and 2e in particular). It will be appreciated that in the assembled dispensing device 1, the central slot 2d and guide slots 2i, 2j accommodate a limited range of sliding movement of the dispenser 3 relative to the housing 2 along the axis A, whilst nevertheless keying the dispenser 3 to 25 the housing 2 to prevent relative rotation of the dispenser 3 and the housing 2. The operation of the dispensing device 1 will now be described with reference to Fig ures 2 to 8, which show the assembled dispensing device 1 in various configurations. 30 Thus, Figures 2a to 2e show corresponding views of the assembled dispensing device 1 in initial non-use position, wherein the dispenser 3 is retracted within the housing 2. In this non-use position, the dispenser head 8, specifically the cap portion 10, blocks the opening 2c in the housing 2 and the curved front wall 2b of the housing 2 covers 35 the outlet 9e in the front wall 9a of the face portion 9, shielding the outlet 9e and pre venting access to the interior of the housing 2 (and hence to the phial 4, pump mecha- 13 nism 5, collar 6 and locking lever 7). At the same time, the ridge 1Oc (see Figure 5b) and lower edge of the cut away section of the rear wall 2a of the housing 2 act respec tively as a stop and abutment for preventing actuating movement of the dispenser head 8 towards the phial 4 along the axis A. Actuation of the pump mechanism 5 is thereby 5 prevented in the non-use position. Referring specifically to Figure 2d, the locking lever 7 acts to lock the dispenser 3 in the non-use position. Thus, the elongate resilient elements 7h, 7i, reacting against the rear wall 9b, urge the locking lever 7 into a forward, locking position wherein the feet 7d, 7e 10 engage the respective upper pair of apertures 2e, 2f to prevent relative sliding move ment of the dispenser 3 and housing 2 along the axis A. Figures 3 to 7 present a step-by-step illustration of the movement of the dispenser 3 from its non-use position shown in Figure 2, to an operative position, shown in Figure 15 7, in which the outlet 9e is uncovered. Referring first of all to Figures 3 and 4, moving the locking lever 7 out of the locking position shown in Figure 2 requires a two-step movement of the transmission plate 11. 20 Firstly, as shown in Figures 3a to 3e, the transmission plate 11 must be slid down a distance x (see also Figure 1 c), against the bias of the sprung metal member 12, to the position shown in Figure 3, where the transmission plate 11 abuts against the steps 10j and the lower edge of the arched window 1 Oc, and the curved upper edge of the transmission plate 11 "clears" the shoulder 10e (refer to Figure 1c). From this position, 25 the transmission plate 11 can then be tilted inwardly, on the hinged frame 1Of, towards the locking lever 7, such that the upper region of the frame 1 Of and the transmission plate 11 engage the yoke portion 7c of the locking lever 7 and subsequently rotate the locking lever 7 out of the locking position, against the action of the resilient, elongate resilient elements 7h, 7i (see Figures 4a to 4e). In this manner, the feet 7d, 7e are 30 moved out of latching engagement with the housing 2 (see Figure 4d in particular). It will be appreciated that a user may perform the above two movements manually us ing a single hand. Thus, a user may grasp the housing 2 (which acts as a handle) with one hand and then use his or her respective thumb to slide the transmission plate 11 35 down into the position shown in Figures 3a to 3e and subsequently press the transmis- 14 sion plate 11 (on the frame 1 Of) inwardly to move the feet 7d, 7e out of latching en gagement with the housing 2 in the manner described and shown in Figure 4. With the transmission plate 11 in the position shown in Figures 4a to 4e, the dispenser 5 3 is no longer locked to the housing 2, and it is then a straightforward matter for the user to telescopically slide the dispenser 3 along the axis A, relative to the housing 2, using the same thumb to telescopically slide the dispenser 3 whilst continuing to press the transmission plate 11 inwardly. The dispenser 3 can thus be moved to the opera tional position shown in Figures 5a to 5e, wherein the guide projection 4e and slide 10 projections 9d have reached the top of the central slot 2d and guide slots 2i. 2j respec tively to limit further upward sliding movement of the dispenser 3 relative to the housing 2. During sliding movement of the dispenser 3 along the axis A, the spring 5d maintains the dispenser head 8 and phial 4 in fixed spatial relation to one another. 15 In the operational position shown in Figures 5a to 5e, the dispenser head 8 projects outwardly through the opening 2c in the housing 2 and the outlet 9e is no longer cov ered by the housing 2. Nevertheless, it should be noted that the dispenser head 8 still blocks the opening 2c, so that access to the interior of the housing 2 continues to be prevented, even in the operational position. 20 Once a user has moved the dispenser head 8 into the operational position shown in Figures 5a to 5e, the user can then lock the dispenser 3 to the housing 2 in the opera tional position by performing the same two-step movement of the transmission plate 11, but in reverse. Thus, referring to Figures 6 and 7, the user can release manual 25 pressure on the transmission plate 11 to allow outward tilting movement of the trans mission plate 11 back to the position shown in Figures 4a to 4e, whereby the transmis sion plate 11 and frame 1 Od become disengaged from the locking lever 7 and the re silient toe portions urge the feet into latching engagement with the upper pair of aper tures 2e, 2f in the housing 2. From this position, the user can then manually slide the 30 transmission plate 11 back into the misaligned position shown in Figure 3, whereby inward tilting movement of the transmission plate 11 is prevented by the shoulder 1 Oe. With the dispenser 3 locked in the operative position, as shown in Figure 7, the user can grasp the housing 2 and selectively depress the dispenser head 8 (and conse 35 quently the pump piston member 5c) relative to the housing 2 (and consequently the phial 4, which is locked relative to the housing 2), against the action of the spring 5d, to 15 actuate the pump mechanism 5 and dispense a desired amount of substance through the outlet 9e. The user can carry out this dispensing operation without having to manu ally maintain the dispenser 3 in the operative position because the dispenser 3 is actu ally locked in the operative position. At the same time, the user can carry out the dis 5 pensing operation without having to touch the phial 4. Once a user has finished dispensing the substance, the dispenser 3 can then be re leased from its locked operative position and returned to a locked non-use position simply by reversing the steps described above. Here, it should be noted that as the 10 user slides the dispenser 3 back into the housing 2, the spring 5d again serves to maintain the phial 4 and the dispenser head 8 in substantially fixed spaced relation to prevent actuation of the pump mechanism 5. It will be appreciated that the "two-step" movement of the transmission plate 11 which 15 is required to move the feet of the locking lever 7 into and out of latching engagement with the housing 2 reduces the likelihood of accidental movement of the dispenser 3 from the non-use position to the operative position, for example when the dispenser is being carried in a pocket or handbag. Similarly, the "two-step" movement makes it more difficult for a child to "unlock" the dispensing device in the non-use position, either 20 inadvertently or intentionally; the design thus provides a degree of "child resistance", which may be particularly advantageous where the substance is a medical substance such as, for example, a nicotine formulation. In the embodiment shown in Figures 1 to 7, the movement of the dispenser 3 from the 25 non-use position to a dispensing position requires an additional three "steps" even once the dispensing device has been "unlocked". Thus, even if the dispenser is "unlocked" in the non-use position, the housing 2 will continue to shield the outlet until such time as the dispenser 3 is manually moved to the operative position (which itself requires continued pressure applied to the transmission plate 11). In addition, because 30 the sliding movement of the dispenser 3 is along the line of actuating movement of the dispenser head 8 relative to the dispenser body (and the sprig 5d is configured for maintaining a fixed spatial relation between the dispense head 8 and the phial 4 during such sliding movement of the dispenser 3) the pump mechanism 5 cannot effectively be actuated even with the dispenser 3 in the operative position, until such time as the 35 dispenser 3 is locked in the operative position by a further "two-step" movement of the transmission plate 11. These additional steps further reduce the risk of unintentional or 16 undesired actuation of the dispensing mechanism to dispense the substance out through the outlet 9e. Although the housing may be any desired shape, it will be appreciated that the housing 5 2 preferably has a "slim-line" shape that is particularly ergonomic and space efficient. Indeed, it should be noted also that the dispensing device 1 has an "in-line" configura tion, in that both sliding movement of the dispenser 3 relative to the housing 2 and ac tuating movement of the dispenser head 8 relative to the dispenser body are co-axial (each'being directed along axis A). The "in-line" configuration of the dispensing device 10 1 is made possible by the feature that the dispenser 3 can be locked in the operative position, to prevent retraction of the dispenser 3 from the operative position when the dispenser head 8 is depressed, as well as the feature that the spring 5d has sufficient "stiffness" to maintain the dispenser head 8 and the phial 4 in fixed spatial relation dur ing sliding movement of the dispenser 3 from the non-use position to the operative 15 position. It will be appreciated that, because the housing 2 is separate from the phial 4, the housing 2 is not restricted to being formed from materials that are specifically suitable for contact with the substance in the phial 4. This separation of the handle, being the 20 part a user grasps to use the device, and the dispenser body, being the component defining the dispensing chamber, provides for greater flexibility in the use of materials. For example, the housing 2 may be formed from a material which lends itself to the formation of an ergonomic shape at relatively low cost, or a material which is highly shock resistant, without consideration of the material being "substance-inert". 25 In the case of the housing 2, the flat rear wall 2a allows the dispensing device to be safely laid flat on a surface, such as a table, without risk of the device 1 rolling off the surface. 30 In an alternative embodiment, the transmission plate may be omitted entirely, so that a user may directly engage the locking lever with his or her thumb, through the window in the peripheral skirt. Although it is preferable that the actuating member be resiliently mounted to the dis 35 penser body, for convenient actuation, it should be appreciated that this is not an es- 17 sential feature of the invention, provided the actuating member is mounted for move ment relative to the dispenser body to actuate the dispensing mechanism. Whilst it is envisaged that the dispensing device will be assembled from "snap-fitting" 5 together of components wherever possible, assembly of the dispensing device might also include other methods of attaching the various components, in particular gluing components together where appropriate.

Claims (24)

1. A hand-held dispensing device for dispensing a substance, the device compris ing: 5 a dispenser incorporating: i) a dispenser body defining a dispensing chamber for holding the substance; ii) an outlet in communication with the dispensing chamber; 10 iii) a dispensing mechanism for dispensing the contents of the dispensing chamber through the outlet and iv) an actuating member mounted for movement relative to the dispenser body to actuate the dispensing mechanism; 15 the dispenser being operably connected to a handle for manual sliding movement rela tive to the handle from a non-use position, in which the handle covers the outlet, to an operative position, in which the outlet is uncovered; the device further comprising a locking assembly for releasably locking the dispenser 20 body to the handle in the operative position to prevent said manual sliding movement of the dispenser body, whereby a user may grasp the handle and effect manual move ment of the actuating member relative to the handle and the dispenser body so as to actuate the dispensing mechanism and dispense the contents of the dispensing cham ber through the uncovered outlet. 25

2. A device according to claim 1, wherein the locking assembly is further config ured for releasably locking the dispenser body in the non-use position to prevent said manual sliding movement of the dispenser to the operative position. 30

3. A device according to claims 1 or 2, wherein the actuating member is provided with a stop that engages an abutment on the handle when the dispenser is in said non use position for preventing actuating movement of the actuating member, relative to the dispenser body. 35

4. A hand-held dispensing device according to claim 1, wherein the actuating mem ber is resiliently mounted for movement relative to the dispenser body against the ac tion of a biasing member and wherein, with the dispenser in the operative position, a 19 user may effect said manual movement of the actuating member relative to the handle and the dispenser body, against the action of the biasing member.

5. A device according to claim 4, wherein the dispenser is operably connected to 5 the handle for relative, manual, sliding movement along a line of action of said biasing member, the biasing member being configured for maintaining the dispenser body and actuating member in substantially fixed, spatial relation to one another during said sliding movement from the non-use position to the operative position. 10

6. A device according to any of claims 1 to 3, wherein the actuating member is in the form of a dispenser head incorporating the outlet, the dispenser head being mounted at one end of the dispenser body for manual depression relative to the dis penser bodyto actuate the dispensing mechanism. 15

7. A device according to claim 6, wherein the handle is a hollow housing which slidably receives the dispenser, the dispenser being manually slidable between said operative position, in which the dispenser head projects outwardly through an opening in the housing, and said non-use position, in which the dispenser is retracted within the housing. 20

8. A device according to claim 7, wherein the dispenser head is resiliently mounted at one end of the dispenser body for manual depression relative to the dispenser body, against the action of said biasing member, to actuate the dispensing mechanism, and wherein said manual sliding movement of the dispenser between the operative position 25 and the non-use position is along the axis of depression of the dispenser head, the biasing member being configured for maintaining the dispenser head and dispenser body in substantially fixed, spatial relation to one another during said manual sliding movement. 30

9. A device according to claim 7 or 8, wherein the dispenser head is configured to block the opening in the housing when the dispenser is retracted to said non-use posi tion.

10. A device according to claim 9, wherein the dispenser head is dimensioned to 35 engage the housing in a telescopic fit, the length of the dispenser head being such that the dispenser head blocks the opening in the housing over the full range of manual 20 sliding movement of the dispenser between said non-use position and said operative position.

11. A device according to claim 10, wherein a section of the wall of the housing is 5 cut-away adjacent the opening such that a user may manually engage the dispenser head directly in said retracted, non-use position and effect manual sliding movement of the dispenser head, relative to the housing, to move the dispenser from the non-use position to the operative position, said biasing member maintaining the dispenser body and dispenser head in substantially fixed relation during said sliding movement. 10

12. A device according to any of claims 6 to 11, wherein the dispenser head com prises a peripheral skirt defining a hollow interior head region communicating with the interior of the housing, the locking assembly comprising a locking lever mounted to the dispenser body at a fulcrum located inside the hollow interior head region, the locking 15 lever having a latching element which is displaceable, by pivotal movement of the locking lever, into and out of latching engagement with the housing.

13. A device according to claim 12, wherein the locking lever is urged by a resilient element in the direction to displace the latching element into latching engagement with 20 the housing.

14. A device according to claim 13 as dependent upon claim 11, wherein the periph eral skirt is provided with window which is aligned with the cut-away section of the housing, whereby a user may apply manual pressure to the locking lever, through said 25 cut-away section and the window in the peripheral skirt, to effect said pivotal movement of the locking lever against the action of the resilient element in the direction to displace the latching element away from latching engagement with the housing.

15. A device according to claim 14, wherein a transmission plate is displaceably 30 mounted on the peripheral skirt at the aperture, for transmitting to the locking lever said manual pressure applied to the transmission plate.

16. A device according to claim 15, wherein the transmission plate is hingedly mounted on the exterior of the peripheral skirt and dimensioned for inward tilting 35 movement through the window to engage the locking lever. 21

17. A device according to claim 16, wherein the transmission plate is slidably mounted on the peripheral skirt for sliding movement relative to the window between an aligned position, allowing said inward tilting movement of the transmission plate through the window, and a mis-aligned position, in which the edge of the window pre 5 vents inward tilting movement of the transmission plate through the window.

18. A device according to claim 17, wherein the transmission plate is resiliently bi ased towards said mis-aligned position and is slidable against the action of said bias into the aligned position. 10

19. A device according to any preceding claim, wherein the exterior of the housing incorporates a flat face-section.

20. A device according to any preceding claim, wherein the dispensing mechanism is 15 a pump mechanism and the outlet is a spray nozzle.

21. A device according to any preceding claim, wherein the dispensing chamber con tains a substance in liquid form. 20

22. A device according to claim 21, wherein the substance comprises a nicotine formulation or other formulation.

23 A device according to claim 22, wherein the substance comprises a nicotine formulation, and wherein the dispenser body is made from a material selected from one 25 or more of or a mixture of glass, a copolymer of acrylonitrile and methyl acrylate (Barex@), a cyclic olefin copolymer (COC), polymers based on dimethyl-2,6 naphtha lene dicarboxylate or 2,6-naphthalene dicarboxylic acid monomers, such as polyethyl ene naphthalate (PEN) and polytrimethylene naphthalate (PTN), liquid crystal polymers (LCP), preferably LCPs comprising hydroxy benzoic acid and hydroxy naphthalenic 30 acid, said materials being optionally mixed with one or more of polymers, selected from polyacrylonitrile (PAN), polyamide (PA), polyvinylidene chloride (PVDC), fluoropoly mers, ethylene vinyl alcohol copolymer (EVOH), polyvinyl alcohol (PVA), ionomers, polyethylene (PE), polypropylene (PP) and polyethylene terephtalate (PET). 35

24. A hand-held dispensing device for dispensing a substance, the device being substantially as herein described with reference to any one of the embodiments of the invention illustrated in the accompanying drawings and/or examples.