Patent Grant
9332827
This application is a U.S. national stage entry under 35 U.S.C. §371 of Patent Cooperation Treaty Patent Application No. PCT/US2010/060534, filed Dec. 15, 2010, the entirety of which is incorporated herein by reference.
The advantages of good dental hygiene are well known. Often, however, people either forget their toothbrushes when traveling or do not carry their toothbrushes outside of the home. Hotels, health care facilities, nursing homes, hospitals, daycare facilities, schools, airlines, etc. have a need for single use disposable or limited multiple use toothbrushes that may be economically supplied to and discarded by individuals without a toothbrush, a dentifrice and/or a water supply. Such toothbrushes could be used in vending machines or distributed in large quantities for simple, portable use at any location.
Various types of disposable, limited use or portable toothbrushes are known in the art. For example, some toothbrush systems have attempted to meet some of these needs by providing an oral care material within the toothbrush itself, through an integrated channel, for distribution through the toothbrush and around the bristles. Another approach is the development of an oral care implement having a moisture degradable capsule having an oral care material secured thereto during manufacturing.
It has recently been determined that packaging costs for portable oral care implements are unnecessarily high. One reason for this high cost is because portable oral care implements of the type described above must be maintained in a sealed environment during product manufacturing, packaging, shipping and display in order to maintain the integrity of the oral care material.
Thus, a need exists for a package and/or kit that can provide an economic solution to the packaging difficulties and costs discussed above, while still providing a suitable portable, waterless and/or disposable oral care implement.
The present invention is directed to a kit comprising a toothbrush and a dispenser. The dispenser comprises a housing containing capsules containing an oral care material, a dispensing conduit, and a valve. The dispenser further comprises a dispensing subassembly that dispenses one of the capsules at a time. The dispenser can dispense the capsule directly onto the toothbrush of the kit.
In one aspect, the invention can be an oral care kit comprising: at least one toothbrush; and a dispenser comprising: a housing having an internal chamber containing a plurality of capsules containing an oral care material; a dispensing conduit extending from the internal chamber to an exterior of the dispenser; a valve positioned in the dispensing conduit, the valve biased into a sealed state that prevents moisture from entering the internal chamber through the dispensing conduit; a dispensing subassembly configured to dispense one of the plurality of capsules at a time from the internal chamber through the valve, the valve being forced into an open state that allows the one capsule to pass therethrough when the one capsule is subjected to a dispensing force imparted by the dispensing subassembly, the valve automatically returning to the sealed state after the one capsule passes through the valve.
In another aspect, the invention can be an oral care dispenser comprising: a housing having an internal chamber containing a plurality of capsules containing an oral care material; a dispensing conduit extending from the internal chamber to an exterior of the dispenser; a valve positioned in the dispensing conduit, the valve biased into a sealed state that prevents moisture from entering the internal chamber through the dispensing conduit; a dispensing subassembly configured to dispense one of the plurality of capsules at a time from the internal chamber through the valve, the valve being forced into an open state that allows the one capsule to pass therethrough when the one capsule is subjected to a dispensing force imparted by the dispensing subassembly, the valve automatically returning to the sealed state after the one capsule passes through the valve.
In still another aspect, the invention can be a method of applying an oral care material to an oral surface comprising: a) providing a toothbrush; b) providing a dispenser comprising: a housing having an internal chamber containing a plurality of capsules containing an oral care material; a dispensing conduit extending from the internal chamber to an exterior of the dispenser; a valve positioned in the dispensing conduit, the valve biased into a sealed state that prevents moisture from entering the internal chamber through the dispensing conduit; and a dispensing subassembly configured to dispense one of the plurality of capsules at a time from the internal chamber through the valve; c) positioning the dispenser adjacent the toothbrush; and d) activating the dispenser assembly, the dispenser subassembly imparting a dispensing force onto the one capsule, thereby forcing the one capsule through the valve and onto the toothbrush, the valve automatically returning to the sealed state after the one capsule passes through the valve.
Further areas of applicability of the present invention will become apparent from the detailed description provided hereinafter. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
The present invention will become more fully understood from the detailed description and the accompanying drawings, wherein:
The following description of the preferred embodiment(s) is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses.
The description of illustrative embodiments according to principles of the present invention is intended to be read in connection with the accompanying drawings, which are to be considered part of the entire written description. In the description of the exemplary embodiments of the invention disclosed herein, any reference to direction or orientation is merely intended for convenience of description and is not intended in any way to limit the scope of the present invention. Relative terms such as “lower,” “upper,” “horizontal,” “vertical,” “above,” “below,” “up,” “down,” “left,” “right,” “top,” “bottom,” “front” and “rear” as well as derivatives thereof (e.g., “horizontally,” “downwardly,” “upwardly,” etc.) should be construed to refer to the orientation as then described or as shown in the drawing under discussion. These relative terms are for convenience of description only and do not require that the apparatus be constructed or operated in a particular orientation unless explicitly indicated as such. Terms such as “attached,” “affixed,” “connected,” “coupled,” “interconnected,” “secured” and similar refer to a relationship wherein structures are secured or attached to one another either directly or indirectly through intervening structures, as well as both movable or rigid attachments or relationships, unless expressly described otherwise. Moreover, the features and benefits of the invention are described by reference to the exemplary embodiments illustrated herein. Accordingly, the invention expressly should not be limited to such exemplary embodiments, even if indicated as being preferred. The discussion herein describes and illustrates some possible non-limiting combinations of features that may exist alone or in other combinations of features. The scope of the invention is defined by the claims appended hereto.
Referring to
The oral care implements 200 and the dispenser 300 are located within a common primary package 101. The oral care implements 200 are located within a first compartment 102 of the primary package 101 while the dispenser 300 is located within a second compartment 103 of the primary package 101. Both of the first and second secondary compartments 102, 103 are formed within the primary package 101. In the exemplary embodiment, the primary package 101 is a clamshell package, such as a blister pack. Clamshell packages are preferable because they provide barrier protection for shelf life requirements and a degree of tamper resistance. Furthermore, clamshell packages have a low manufacturing cost and enable the items contained therein to be clearly displayed to a consumer. Of course, the invention is not so limited and other types of packaging known in the art can be used for the primary package 101.
As will be described in more detail below, the dispenser 300 contains a plurality of capsules 310 that contain an oral care material. The capsules 310 degrade in the presence of liquid, such as saliva or moisture in the air. As such, the capsules 310 must be packaged in such a way as to protect them against moisture/humidity. However, it will be understood from the description below that the dispenser 300 is created in the manner necessary to protect the capsules 310 against moisture and humidity. Therefore, the second compartment 103 does not need to be moisture sealed in certain embodiments. However, in certain embodiments, the second compartment 103 and/or the primary package 101 can be moisture sealed for an added layer of protection if desired.
The first compartment 102 comprises a front wall 112 and the second compartment 103 comprises a front wall 113. In the exemplary embodiment, the front walls 112, 113 of the first and second compartments 102, 103 are formed of a transparent material so that the oral care implements 200 and dispenser 300 are visible to a consumer within the primary package 101. Of course, the invention is not so limited and the front walls 112, 113 may be translucent or opaque, such as a colored surface, or the front walls 112, 113 may comprise a design to capture the attention of a consumer.
In the exemplary embodiment, the oral care implements 200 are illustrated as manual toothbrushes. However, it should be understood that the oral care implements 200 could be any type of implement used for oral care, such as without limitation tongue scrapers, flossing devices, powered toothbrushes, tooth whitening applicators and the like. As will also be understood from the description below, the oral care implements 200 are preferably packaged separately from the capsules 310 so that there are no requirements regarding packaging of the oral care implements 200 with regard to moisture sealing.
The primary package 101 comprises a top edge 104, a bottom edge 105 and two opposing side edges 106, 107 connected between the top and bottom edges 104, 105 to form a rectangular shape. Of course, the invention is not so limited and the primary package 101 may take on any other shapes as would be known to persons skilled in the art. The shape of the primary package 101 is in no way limiting of the present invention.
The primary package 101 comprises an aperture 108 extending therethrough. The aperture 108 is used for hanging the primary package 101 from a hook in a retail store for display. The aperture 108 may take on any shape, and in certain embodiments the aperture 108 may be omitted altogether. In such embodiments where the aperture 108 is omitted, the primary package 101 may comprise a base upon which the primary package 101 can rest in an upright position.
In the exemplary embodiment, one dispenser 300 is packed in the second compartment 103 and six oral care implements 200 are packed in the first compartment 102. Of course, more or less than six oral care implements 200 may be packed in the first compartment 102. In other words, the number of oral care implements 200 packaged in the kit 100 is in no way limiting of the present invention. Furthermore, it should be understood that the oral care implements 200 can be packed in a tubular container and sold together in the kit 100 with the dispenser 300. Although the oral care implements 200 are illustrated being packaged in a head-to-toe manner, the invention is not so limited. The oral care implements 200 may be packaged in any orientation. However, the head-to-toe packaging may be preferred in embodiments of the kit 100 where it is desired to have a large number of the oral care implements 200.
In certain alternative embodiments, the oral care implements 200 may be sold separately from the dispenser 300. For example, certain oral care implements 200 may be reusable. In such embodiments, the dispenser 300 may be purchased separately from the oral care implements 200 in order to provide additional capsules 310 for use with the oral care implements 200 as will be understood from the description below. Furthermore, in certain other embodiments, the dispenser 300 may contain capsules 310 that are to be used by themselves for breath freshening or other oral care purposes. In other words, the capsules 310 do not need to be used in conjunction with the oral care implements 200 in all embodiments. However, it will be understood from the description below that the capsules 310 are most effective when used in combination with the oral care implements 200.
Referring now to
In the illustrated embodiment, the proximal end 201 of the handle 214, which is opposite the end to which the head 212 is connected, comprises an oral care accessory, which in the exemplified embodiment is a toothpick 216. The toothpick 216 is preferably formed of a resilient and soft thermoplastic elastomer. As with the head 212, the toothpick 216 may be a refill toothpick that is removably connected to the handle 214 or may be permanently connected to the handle 214. The toothpick 216 provides a mechanism for spot cleaning between teeth. Forming the toothpick 216 of a soft thermoplastic elastomer provides for a more comfortable interproximal cleaning between the teeth. The toothpick 216 could, however, be made of a stiff, rigid material similar to the main portion of the handle 214, or could simply be a rubber or elastomeric pick adhered or otherwise mounted to the end of the handle 214. Alternatively, a different accessory, such as a strip of dental floss or a tongue cleaning element, may be attached to the proximal end 201 of the handle 214. Moreover, in certain embodiments of the invention, the handle 214 may not include an accessory or may include multiple accessories.
The head 212 comprises a cleaning element block 222. The cleaning element block 222 comprises a plurality of bristles 223 extending from the head 212. The bristles 223 of the cleaning element block 222 may be of any desired shape. For example, the bristles 223 could be of cylindrical shape having a uniform diameter throughout their length. Alternatively, the bristles 223 could taper from the root where they extend from the head 212 to their outer cleaning ends.
Furthermore, the dimensions of the various components of the oral care implement 200 are preferably small. Thus, for example, each bristle 223 of the cleaning element block 222 may extend outwardly from the outer surface of the head 212 a distance no greater than 10 mm and preferably no greater than 8 mm and most preferably no greater than 6 mm. Where tapered cleaning elements are used, the root diameter should be no greater than 1.5 mm, more preferably between 0.5 mm and 1 mm and most preferably no greater than 0.3 mm. The diameter could then decrease in size with distance from the head 212. Preferably, the length of the entire oral care implement 200 is no greater than 5 inches, more preferably no greater than 4 inches and most preferably in the range of 2 to 4 inches.
A central portion of the head 212, which is surrounded by the cleaning element block 222, comprises a depression or cavity 230 for retaining the capsule 310. In certain embodiments, a single one of the capsules 310 is able to nest within the depression 230 at a time. In other words, the depression 230 is sized and configured to retain only one capsule 310. However, the invention is not so limited and in certain other embodiments the depression 230 can contain two or more of the capsules 310 at a time. When alternating capsules 310 contain different oral care materials as will be discussed below, it may be desirable to position two capsules 310 within the depression 230 together for a single brushing experience.
In the exemplary embodiment, the depression 230 is formed into a cleaning element field of the head 212 of the toothbrush 200. As will be described in more detail below with reference to
In one preferred embodiment of the present invention, the entire structure of the oral care implement 200, including the head 212, the handle 214, and the toothpick 216, is molded as one integral structure, using a conventional two-component injection molding operation typically used in the manufacture of oral care implements. This enables the oral care implement 200 to be economically and quickly manufactured. Although the oral care implement 200 may be constructed in a wide variety of sizes, shapes and relative dimensions, it is preferred that the oral care implement 200 have a small profile so that it is easily portable and can be discreetly used. In one embodiment, it is preferred that the head 212 be small enough to cover a single tooth at a time and that the handle 214 be substantially thinner than conventional, everyday oral care implement handles.
Since the oral care implement 200 is intended to be both small and lightweight, it is preferred that the oral care implement 200 weigh no more than 3 grams in certain embodiments. The small size allows the oral care implement 200 to be held completely within the palm of an adult user's hand. The head 212 is preferably sized to correspond to the size of an individual tooth or an individual tooth and the interproximal areas. While the head 212 could be made in any suitable shape, it is preferably of circular or oval shape and has a maximum lateral dimension or diameter of no greater than 13 mm, preferably no greater than 12 mm and most preferably no greater than 11 mm. Of course, the oral care implement 200 is not limited to any specific dimensions or shapes.
Referring to
The prongs 231 retain the capsule 310 beneath the distal ends 224 of the bristles 223 of the cleaning element block 222 so as to keep the capsule 310 submerged within the cleaning element field such that the bristles 223 extend beyond the capsule 310 at the distal ends 224. Of course, the invention is not so limited and in other embodiments the capsule 310 may be retained in a position beyond the distal ends 224 of the bristles 223.
The prongs 231 are preferably flexible prongs. Thus, the prongs 231 may be formed of the same material as the bristles 223 or alternatively may be made of a different material having greater rigidity than the bristles 223. When a capsule 310 is inserted into the depression 230, the prongs will flex downwardly towards the depression 230 slightly while still enabling the capsule 310 to be inserted into the depression 230. Once the capsule 310 is nested in the depression 230, the prongs 231 prevent the capsule 310 from becoming dislodged from the depression 230.
The number of prongs 231 may vary depending on the type of capsule, and the amount of retention force assistance required or desired. As illustrated in
In one construction, the prongs 231 are columnar-like structures that extend upwardly from a carrier 235. The columnar-like structures of the prongs 231 may curve inwardly to further assist in holding the capsule 310 in place by an engaging surface 236. The curved columnar-like structures of the prongs 231 may have a length that extends more than halfway up the diameter of the capsule 310 for retention. Hence, a portion of the columnar-like structures may be acutely disposed with respect to a vertical axis of the carrier 235. The combination of the columnar-like structures of the prongs 231 provides a compressive force to hold the capsule 310 in place. The inwardly disposed engaging surface 236 is generally smooth to reliably resist prematurely rupturing the capsule 310 prior to use. Also, the smooth and curved characteristic of the engaging surface 236 provides for a generally uniform distribution of pressure on the surface of the capsule 310. The prongs 231 may assist in rupturing the capsule 310 during brushing.
Referring to
Referring now solely to
The housing 309 of the dispenser 300 comprises a top wall 305 and the bottom wall 306. The shape of the dispenser 300 is particularly designed to be comfortably held within a single hand of a user. In the exemplified embodiment, the dispenser 300 has a teardrop shape. Of course, the invention is not so limited and the dispenser 300 may take on other shapes as would be known to persons skilled in the art. The actuator 302 extends from the bottom wall 306 of the dispenser 300 through an opening (not shown). Thus, if a user applies pressure to the actuator 302 as will be described in more detail below, the actuator 302 will move through the opening so as to be fully contained within the internal cavity 320 of the dispenser 300.
The nozzle 303 is the portion of the dispenser 300 through which the capsules 310 exit the dispenser 300 so as to be inserted into the depression 230 of the oral care implement 200. In certain embodiments, the nozzle 303 is sized and shaped to be inserted into the depression 230 of the oral care implement 200. In this way, the nozzle 303 can be positioned within the depression 230, and then one of the capsules 310 can be dispensed directly into the depression 230. Due to the flexible configuration of the prongs 231, inserting the capsules 310 directly into the depression 230 as described above will result in the capsules 310 being retained in the depression 230 until use. Dispensing of the capsules 310 will be described in more detail below with reference to
As will also be described in more detail below with reference to
In the exemplified embodiment, the capsules 310 are substantially spherical beads. Of course, the invention is not so limited and the capsules 310 may take on other shapes as would be known to persons skilled in the art. In one embodiment, the capsules 310 contain an oral care material for treating or otherwise providing health benefits to a user's teeth. In one specific embodiment, the capsules 310 comprise a moisture degradable shell that contains a fluidic oral care material therein. The oral care material may be toothpowder, toothpaste, tooth cleaning gel, mouthwash or a similar dentifrice or oral hygiene product, or a combination of the same. As described above, during use, at least one of the capsule 310 is inserted into the depression 230 of the head 212 of the oral care implement 200. When a user uses the oral care implement 200 to brush his or her teeth, the capsule 310 ruptures thereby expelling its contents (i.e., oral care material) and providing health benefits to a user's teeth.
The capsules 310, or at least the shell of the capsules 310, are moisture-sensitive and should be protected against high humidity environments in order to prevent premature rupture. In other words, the capsules 310, or at least a portion thereof, are susceptible to degradation when subjected to a high humidity atmosphere as it has been discovered that moisture in the air in a high humidity environment can degrade the integrity of the capsules 310. Therefore, the capsules 310 must be packaged so as to be protected against moisture or humidity in the air prior to use. The dispenser 300 achieves this moisture-free environment as will be described in more detail below.
The capsules 310 hold and apply an oral care material onto the tooth cleaning elements 222 of the oral care implement head 212, and ultimately to a user's teeth and/or soft oral tissue surfaces. In certain embodiments, the capsules 310 are liquid-filled gel capsules having a shell comprising frangible, thin walls that easily rupture or burst when rubbed against the teeth. In a preferred embodiment, the capsules 310 degrade when subjected to moisture and, thus, dissolve when mixed with the saliva of a user. As the saliva of a user degrades and dissolves the walls of the capsules 310, the oral care material held therein is excreted. While the degradation of the capsules 310 is a desired characteristic for effectuating end use of the oral care implement 200 by the consumer, the moisture-driven degradation of the capsules 310 presents issues with respect to properly preserving the integrity of the capsules 310 during product manufacturing, packaging, shipping and display in retail stores.
The capsules 310, or at least a portion thereof, are susceptible to degradation when subjected not only to direct contact with liquid water but also to prolonged exposure to atmospheres having a high humidity level. As noted above, it has been discovered that a high humidity environment can degrade the integrity of the capsules 310 and prematurely expel the oral care material or cause the oral care material to dry up. Of course, the exact humidity levels and exposure times that will result in the degradation of the capsules 310 will be determined on a case-by-case basis, considering such factors as the type of capsule 310 being used, the type of oral care material, and the thermal cycling to which the oral care implement 200 is subjected. In view of the foregoing, the capsules 310 are placed in the dispenser 300, which forms a hermetically sealed cavity, thereby protecting the capsules 310 from external moisture which can be in the form of a high humidity atmosphere or liquid water.
Referring now to
In certain embodiments, the dispenser 300 can be used for an entire tooth care regimen. For example, the plurality of capsules 310 can comprise a first type of capsules 360 comprising a first oral care material and a second type of capsules 361 comprising a second oral care material, such that the first and second oral care materials are different. For example, the first oral care material could be a tooth whitening agent while the second oral care material may be a tooth sensitivity agent. Of course, other oral care materials can be used. For example, suitable oral care materials include whitening agents, including without limitation, peroxide containing tooth whitening compositions. Suitable peroxide containing tooth whitening compositions are disclosed in U.S. patent Ser. No. 11/403,372, filed Apr. 13, 2006, to the present assignee, the entirety of which is hereby incorporated by reference. While a tooth whitening agent is one of the exemplified active agents in the present invention, any other suitable other care agents can be used with embodiments of the present invention and, thus, stored within the capsules 310. Contemplated oral care agents can be an active or non-active ingredient, including without limitation, antibacterial agents; oxidative or whitening agents; enamel strengthening or repair agents; tooth erosion preventing agents; anti-sensitivity ingredients; gum health actives; nutritional ingredients; tartar control or anti-stain ingredients; enzymes; sensate ingredients; flavors or flavor ingredients; breath freshening ingredients; oral malodor reducing agents; anti-attachment agents or sealants; diagnostic solutions; occluding agents; anti-inflammatory agents; dry mouth relief ingredients; catalysts to enhance the activity of any of these agents; colorants or aesthetic ingredients; and combinations thereof. The oral care agent in one embodiment is free of (i.e., is not) toothpaste. Instead, the active agent is intended to provide supplemental oral care benefits in addition to merely brushing one's teeth. Other suitable oral care agents could include lip balm or other materials that are typically available in a semi-solid state.
The plurality of capsules 310 can be arranged in the single file line so that the first and second types of capsules 360, 361 are in an alternating order. In this way, a user can use the first type of capsule 360, which may contain a dentifrice, for a normal toothbrushing. Immediately after completing toothbrushing with the first type of capsule 360, a user can dispense the second type of capsule 361 onto the oral care implement 200. The second type of capsule 361 may contain an agent, such as a whitening agent, an antibacterial agent, a sensitivity agent, a tooth strengthening agent or the like. The type of agent used as the first and second oral care agents are not limiting of the present invention and any agents may be used as would be known to persons skilled in the art. Furthermore, more than two different types of capsules may be used so that the tooth care regimen can include using three or more capsules having different oral care materials disposed therein in succession. Additionally, in certain embodiments where the depression 230 of the head 212 of the oral care implement 200 is sized to accommodate two or more capsules 310 at a time, two or more capsules containing oral care agents that react when combined to create a more effective cleaning solution may be used together.
Referring solely now
The dispensing conduit 322 extends from the internal chamber 321 to an exterior 399 of the dispenser 300. The dispensing conduit 322 comprises a loading zone 323 into which one capsule 311 of the plurality of capsules 310 will be biased upon activation of the actuator 302 as will be described in more detail below. The dispensing conduit 322 further comprises a dispensing zone 324 that is positioned on the opposite side of a valve 325 relative to the loading zone 323. After the capsule 310 passes through the valve 325, as will be described in detail below, the capsule 310 is positioned within the dispensing zone 324. Once in the dispensing zone 324, the capsule 310 can exit the dispenser through a nozzle opening 326 and be placed within the depression 230 of the oral care implement 200.
As noted above, the valve 325 divides the dispensing conduit 322 into a loading zone 323 and a dispensing zone 324. The valve 325 is preferably formed of an elastomeric, rubber or other flexible material such that the valve 325 opens in response to pressure exerted in a direction from the loading zone 323 to the dispensing zone 324. Thus, in response to the pressure as described above, the valve 325 allows the one capsule 311 of the plurality of capsules 310 to pass from the loading zone 323 to the dispensing zone 324 for insertion onto the oral care implement 200. In the exemplified embodiment, the valve 325 is a one-way duck-bill valve. Thus, in its normal, biased state, the valve 325 is closed and creates a hermetic seal. Stated simply, in its biased position, moisture is unable to penetrate through the valve 325 to enter into the internal chamber 321 of the dispenser 300 through the dispensing conduit 322. Thus, the valve 325 protects the capsules 310 positioned within the internal chamber 321 against moisture degradation.
The dispenser 300 further comprises a dispensing subassembly comprising the actuator 302, a drive mechanism 315, a first resilient member 316 and a second resilient member 317. In the exemplified embodiment, the first resilient member 316 is a helical or coil spring and the second resilient member 317 is a torsion spring. Of course, the invention is not so limited and the first and second resilient members 316, 317 may be other members or objects that store mechanical energy. For example, either of the first and second resilient members 316, 317 may be, without limitation, tension springs, compression springs, torsion springs, coil springs, flat springs, cantilever springs, balance springs, leaf springs or the like.
The second resilient member 317 is operably coupled to the actuator 302 and biases the actuator 302 into a non-activated stated. In the non-activated state, a portion of the actuator 302 extends from the bottom wall 306 of the housing 309. Furthermore, in the non-activated state, the drive mechanism 315 is positioned within the loading zone 323 of the dispensing conduit 322 so as to prevent any of the plurality of capsules 310 from entering the dispensing conduit 322 from the internal chamber 321. In other words, in the non-activated state, the opening 307 of the internal chamber 321 is closed by a top edge 318 of the drive mechanism 315. By fully enclosing the internal chamber 321, the capsules 310 provided in the internal chamber 321 are further protected against potential moisture degradation. Furthermore, the top edge 318 of the drive mechanism 315 can be covered by a grommet or gasket to further protect the capsules 321 in the internal chamber 321 against moisture by preventing moisture from entering the internal chamber 321.
The first resilient member 316 imparts a loading force LF onto the plurality of capsules 310. In the exemplified embodiment, the coil spring presses against the plurality of capsules 310 and forces the plurality of capsules 310 towards the opening 307. The first resilient member 316 includes a contact member 319 that is in continuous contact with a last capsule 328 of the plurality of capsules 310. The contact member 319 is formed of a soft, smooth material, such as an elastomer, rubber or the like. By forming the contact member 319 of a soft, smooth material, the first resilient member 316 will not prematurely rupture the last capsule 328 of the plurality of capsules 310. As noted above, when the actuator 302 is in the biased non-activated state, the opening 307 is closed by the top edge 318 of the drive mechanism 315. As such, in the non-activated state, the first resilient member 316 contains potential energy that will be converted to kinetic energy upon activation of the actuator 302 as will be described in more detail below.
Referring to
In
As can be seen in
As can be seen in
The dispensing conduit 322 has a width WDC. The width WDC of the dispensing conduit 322 is the same as, or slightly larger than the diameter D1 of the plurality of capsules 310. As such, only one of the plurality of capsules 310 is able to fit within the dispensing conduit 322 at one time. This enables the dispenser 300 to dispense a single capsule of the plurality of capsules 311 at a time. In certain embodiments, it may be desirable to dispense more than a single capsule at a time. In such embodiments, the dispensing conduit 322 may have a larger width in order to accommodate two or more capsules therein at a time.
The drive mechanism 315 comprises an engagement surface 337. The engagement surface 337 of the drive mechanism 315 is a concave surface that corresponds to the size and shape of the capsules 310. In certain embodiments, the engagement surface 337 of the drive mechanism 315 is formed of or covered with a soft, elastomeric material. The shape and material of the engagement surface 337 of the drive mechanism 315 are designed so that the capsules 310 are not ruptured during dispensing. In other words, as will be described below, during dispensing the drive mechanism 315 contacts the one capsule 311 to push it through the valve 325. Thus, by forming the engagement surface 337 of the drive mechanism 315 with the shape and material as discussed above, premature rupture of the one capsule 311 during dispensing is prevented. Of course, such a cushioning structure may be omitted if desired.
Referring to
Upon biasing the actuator 302 into the non-activated state, the protrusions 336 of the drive mechanism 315 slide within the slots 334, 335 of the actuator 302 in the direction of the valve 325. Thus, the drive mechanism 315 imparts a dispensing force DF onto the one capsule 311 in the direction of the arrow. The dispensing force DF of the drive mechanism 315 is imparted onto the one capsule 311 of the plurality of capsules 310, which pushes the one capsule 311 towards the valve 325. As the one capsule 311 is driven towards the valve 325, the valve 325 is forced into an open state whereby an opening 342 in the valve 325 creates a passageway from the loading zone 323 to the dispensing zone 324.
As the drive mechanism 315 drives the one capsule 311 through the opening 342 in the valve 325, the top edge 318 of the drive mechanism 315 blocks the opening 307 of the internal chamber 321. As such, while the one capsule 311 is being dispensed, the plurality of capsules 310 are prevented from entering into the dispensing conduit 322 from the internal chamber 322.
Referring now to
Once in the dispensing zone 324, the one capsule 311 can easily be removed from the dispenser 300 through the nozzle opening 326. In certain embodiments as discussed above, the nozzle 303 is sized and shaped to be inserted into the depression 230 of the oral care implement 200. In such embodiments, the dispensing force DF may be equal to or greater than a force required to operably insert the one capsule 311 into the depression 230 through the prongs 231. As such, the nozzle 303 can simply be aligned with or inserted into the depression 230 in the head 214 of the oral care implement 200 and the actuator 302 activated to properly position the one capsule 311 in the depression 230 to be retained by the prongs 231.
Referring again to
As used throughout, ranges are used as shorthand for describing each and every value that is within the range. Any value within the range can be selected as the terminus of the range. In addition, all references cited herein are hereby incorporated by reference in their entireties. In the event of a conflict in a definition in the present disclosure and that of a cited reference, the present disclosure controls.
| Filing Document | Filing Date | Country | Kind | 371c Date |
|---|---|---|---|---|
| PCT/US2010/060534 | 12/15/2010 | WO | 00 | 6/6/2013 |
| Publishing Document | Publishing Date | Country | Kind |
|---|---|---|---|
| WO2012/082119 | 6/21/2012 | WO | A |
| Number | Name | Date | Kind |
|---|---|---|---|
| 1411681 | Burlew | Apr 1922 | A |
| RE19006 | Graves | Nov 1933 | E |
| 1950767 | Herman | Mar 1934 | A |
| 1995374 | Young | Mar 1935 | A |
| 2262982 | Wolcott | Nov 1941 | A |
| 3018921 | Hermanson | Jan 1962 | A |
| 3191803 | Hamilton | Jun 1965 | A |
| 3471056 | Kovac | Oct 1969 | A |
| 3638830 | Belokin, Jr. | Feb 1972 | A |
| 4336097 | Van Kampen et al. | Jun 1982 | A |
| 4427116 | Brown | Jan 1984 | A |
| 4651619 | Voecks | Mar 1987 | A |
| 4807757 | Rappaport et al. | Feb 1989 | A |
| 5640945 | Slonaker et al. | Jun 1997 | A |
| 5664697 | Lambelet, Jr. et al. | Sep 1997 | A |
| 6098835 | DeJonge | Aug 2000 | A |
| 6155454 | George et al. | Dec 2000 | A |
| 6176391 | Rehkemper et al. | Jan 2001 | B1 |
| 6220479 | Fishman | Apr 2001 | B1 |
| 6726058 | Giraud | Apr 2004 | B2 |
| 7104417 | Hilliard | Sep 2006 | B2 |
| 7575387 | Atkin | Aug 2009 | B2 |
| 7665923 | Py et al. | Feb 2010 | B2 |
| 8459892 | Hohlbein et al. | Jun 2013 | B2 |
| 8851781 | Bartschi et al. | Oct 2014 | B2 |
| 8881332 | Noble et al. | Nov 2014 | B2 |
| 20040118740 | Donegan | Jun 2004 | A1 |
| 20040237226 | Hohlbein et al. | Dec 2004 | A1 |
| 20080011773 | Tobias | Jan 2008 | A1 |
| 20080120798 | Sorrentino et al. | May 2008 | A1 |
| 20090044356 | Noble et al. | Feb 2009 | A1 |
| 20150083747 | Noble et al. | Mar 2015 | A1 |
| Number | Date | Country |
|---|---|---|
| 894 146 | Oct 1953 | DE |
| 2002-326675 | Nov 2002 | JP |
| WO 8700425 | Jan 1987 | WO |
| WO9708078 | Mar 1997 | WO |
| WO 2006032367 | Mar 2006 | WO |
| Entry |
|---|
| International Search Report and the Written Opinion of the International Searching Authority issued in International Application PCT/US2010/060534 mailed Nov. 7, 2011. |
| Number | Date | Country | |
|---|---|---|---|
| 20130252206 A1 | Sep 2013 | US |
