This invention relates generally to dispensers for dispensing roll material. More particularly, this invention relates to a coreless roll dispenser for incrementally dispensing bath tissue from a coreless roll or bulk material and having a flexible roll brace for supporting the roll while allowing rotation of the roll during discrete dispensing events.
Dispensers for rolls of flexible sheet material, such as bath tissue, toilet tissue and paper towels, have been employed for many years. Such dispensers are widely used in public lavatories to dispense sheet material for users. Typically, in the context of toilet tissue, one or more rolls of web material are rotatably supported inside a dispenser cabinet. Often these dispenser cabinets are configured to generally enclose two rolls of material to minimize the frequency associated with restocking of the dispenser. In these systems, a first roll of material is made available to the user while the other is stored in the dispenser. The second roll frequently only becomes available for use or dispensing upon depletion of the material associated with the first roll.
Many conventional roll dispensers have a spindle about which the roll of material is placed when the dispenser is stocked. Typically, the spindle extends through the core of the roll, from one side of the roll of material to the opposing side. The spindle is then affixed to the dispenser structure as both ends. In this configuration, the spindle supports both sides of the roll of material, and allows the core of the roll to freely rotate, as to cause or allow the sheet material to be advanced from the roll and thereby dispensed from the dispenser. U.S. Pat. No. D307845 discloses a design for such a toilet tissue dispenser configured to receive conventional rolls of toilet tissue. Such dispensers, which employ traditional spindles, require rolls of web material to be disposed about a central hollow core. The spindle is then inserted into the hollow core and facilitates rotation of the roll about the spindle during dispensing events. When the roll of web material has been depleted, the core remains within the dispenser, until the dispenser is restocked; at which time the core must commonly be removed from the spindle and is subsequently discarded.
Increasingly, web material product manufacturers as well as users of such dispensers prefer the use of coreless rolls of toilet tissue. Elimination of the core during manufacturing process reduces cost and waste associated with production of rolls of web material. Use of coreless rolls of web material in dispensers, such as toilet tissue, avoids the need to remove the core associated with a depleted roll of web material during restocking processes. As a result, restocking coreless rolls of web material offers a significant time savings as compared to the restocking of conventional rolls of web material that include a core. Furthermore, use of coreless rolls produce less waste products as there is no resulting core to be discarded. As alluded to above, the manufacture of rolls of web material that lack a core may be more economical than those requiring the additional core material and can eliminate manufacturing steps associated with wrapping web material about a core which must be stored and subsequently positioned to receive the web material.
However, while the desire for use of coreless rolls of toilet tissue is increasing, conventional dispensers are not well suited to accommodate coreless rolls. That is to say, that coreless rolls of web material, in which web material is rolled into an uninterrupted roll having a solid center, do not readily provide a longitudinally extending space or conduit through which a spindle or other supporting structure may be extended and supported or otherwise secured to an underlying dispenser. In the absence of a hollow core, there is need for a dispenser or dispensing system that allows coreless rolls of web material to be securely retained within the dispenser while simultaneously allowing the roll to rotate about the roll's central axis in a conventional manner to accommodate incremental dispensing of the roll.
Accordingly, a need exists for a roll dispenser that allows coreless rolls of web material to be secured within a dispenser housing that limits lateral movement of the roll while facilitating rotational movement in response to a user exerting a pulling force on the web material when removing a length of the web material during each discrete dispense event. Preferably, the force associated with tearing or separating discrete portions of the web material from the roll is greater than the pulling force to mitigate tearing of the web material during each dispensing event until desired by the discrete users.
The present application discloses a dispenser or dispensing apparatus that is configured to incrementally dispense web material from a coreless roll of web material in a manner that overcomes one or more of the aforementioned drawbacks. As will be described more fully herein, one aspect of the invention discloses a web material dispenser or dispenser apparatus for use with coreless rolls of web material such as a toilet tissue, and a roll brace associated with the dispenser to secure the coreless roll of web material within a housing of the dispenser while facilitating rotational movement of the roll to facilitate the incremental dispensing of the web material from the coreless roll. In one aspect of the invention, the apparatus includes a housing having a base, a cover, and a cavity defined between the base and the cover. At least one roll brace extends from the base toward the cover and is configured to retain a roll of coreless web material within the housing. When the housing is in a closed orientation, the at least one brace receives a compression force associated with interaction of the brace with the cover resulting in the compression of the at least one brace about the roll.
Another aspect of the invention that includes or is usable with one or more of the above features or aspects discloses a roll brace having first and second inwardly directed protrusions, which are coaxially aligned when the housing is in a closed orientation to provide a rotational axel for the coreless roll of web material retained therein.
Another aspect of the invention that includes or is usable with one or more of the above features or aspects is a roll brace having a distance between the first and second inwardly directed protrusions, which is approximately greater than or equal to the width of the coreless roll of web material, when the housing is in an open orientation to accommodate insertion and loose support of the coreless roll of web material disposed therein.
Another aspect of the invention that includes or is usable with one or more of the above features or aspects discloses a roll brace having a distance between the first and second inwardly directed protrusions, which is less than the width of the coreless roll of web material, when the housing is in an closed orientation to inhibit lateral movement of the coreless roll of web material relative to the roll brace and secure the protrusion in their generally coaxial alignment at the center of the coreless roll of web material.
Yet another aspect of the invention includes or is usable with one or more of the above features or aspects is the roll brace having a tab protruding outwardly from a side of the roll brace that faces away from the roll of web material. The tab is configured to engage an inner surface of the front or cover of the dispenser when the housing is in a closed orientation, and translate a compression force to the roll brace as to compress the roll brace about the coreless roll.
Each of the aspects disclosed above provides a dispensing activity for a web material that does not rely upon the presence of a core in a roll of the web material. Each of the aspects disclosed above provides a dispenser that facilitates the use of coreless rolls of web material in the context of receiving, securing and/or dispensing web material from a coreless roll, which does not result in the undesirable presence of a core from depleted rolls of web material that would otherwise need to be removed during restocking of the dispenser.
Various other features, aspects and advantages of the invention will be better appreciated and understood when considered in conjunction with the following description and the accompanying drawings. It should be understood, however, that the following description, while indicating preferred embodiments of the present invention, is given by way of illustration and not of limitation. Many changes and modifications may be made within the scope of the present invention without departing from the spirit thereof, and the invention includes all such modifications.
A clear conception of the advantages and features constituting the present invention, and of the construction and operation of typical mechanisms provided with the present invention, will become more readily apparent by referring to the exemplary, and therefore non-limiting, embodiments illustrated in the drawings accompanying and forming a part of this specification, wherein like reference numerals designate the same elements in the several views, and in which:
In describing the preferred embodiments of the invention which are illustrated in the drawings, specific terminology is resorted to for the sake of clarity. However, it is not intended that the invention be limited to the specific terms so selected and it is to be understood that each specific term includes all technical equivalents which operate in a similar manner to accomplish a similar purpose. For example, the word connected or terms similar thereto are often used. They are not limited to direct connection but include connection through other elements where such connection is recognized as being equivalent by those skilled in the art.
Referring initially to
Base 20 generally defines a back wall 24 of the housing 18 while the cover 22 defined at least a portion of opposing sidewalls 26, a floor 28, a top 30 and a front 32 of dispenser 12. It is appreciated that portions of sidewalls, floor, top and front of dispenser 12 may be formed by portions of base 20. Preferably, cover 22 cooperates with base 20 in a manner that allows generally unobstructed access to the cavity 16 of dispenser 12. The housing 18 may be formed of any suitable material and is preferably formed of a plastic material.
The front cover 22, which preferably includes sidewalls 26, floor 28, top 30 and front 32 of dispenser 12 may be constructed as a single piece or having a generally unitary construction and can be formed by any of injection, blow, or roto molding when formed of plastic materials. Alternatively, the various walls or panels that define housing 18 may be separately manufactured parts that are connected to one another by one or more suitable manners such as weldments, moldings, fasteners, solder, or the like.
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A first projection or protrusion 60 extends from the inner surface 62 of the first side 52, towards the opposing second side 56, while a second projection or protrusion 64 extends from the inner surface 66 of the second side 56 towards the opposing first side 52. Additionally, one or more projections or mounting tabs 68 may extend rearwardly from the outer surface 70 of the first sides 52 towards the inner surface 72 of the back wall 24 of the base 16, while a tab 74 extends forwardly of the outer surface 76 of the second side 56 towards the inner surface 78 of the cover 22. Tabs 68 associated with each roll brace 14, 14A, 14B and back wall 24 are constructed such that each of roll braces 14, 14A, 14B can be snap-fittingly secured relative to housing 18.
Although protrusions 60, 64 are shown as generally cylindrical shaped stems, it is appreciated that protrusions 60, 64 can be provided in various shapes and sizes. For instance, it is envisioned that protrusions 60, 64 can be provided as generally smooth or barbed stems constructed to be manually pressed into the center of a coreless roll of web material. It is further appreciated that protrusions 60, 64 could alternatively be constructed to cooperate with or form a detent proximate an axial centerline associated with a discrete roll of web material. It is further appreciated that protrusions 60, 64, when provided in a barbed configuration, could be constructed to removably or rotationally cooperate with the respective sides 52, 56 associated with a respective roll brace 14, 14A, 14B or be constructed as an insert having a barbed or otherwise ribbed surface configured to engage the center portion of a coreless roll of web material and include a cavity shaped to slideably and rotationally cooperate with a generally cylindrical projection—such as protrusions 60, 64. When provided in such a configuration, it is appreciated that the barbed inserts may be reuseable and/or disposable.
Such considerations allow dispenser 12 to be used to dispense coreless rolled web material products having various axial center configurations such as only partial, incomplete, and small diameter coreless axial center portions, an axial center dimple or other depression or discontinuity, etc. Further, such considerations allow dispenser 12 to be quickly and economically configured for use with coreless rolled web material products having various axial center portion constructions. For instance, should the manufacturers of the coreless rolled web material change or otherwise alter the length or the construction of the end faces associated with the coreless rolled web material, braces 14, 14A, 14B, and/or the size, shape, and or position of protrusions 60, 64, can be replaced or manipulated to maintain operability of dispenser 12 with various configurations of the coreless rolled web material without requiring replace of the entirety of dispenser 12. It is further appreciated that, when braces 14, 14A, 14B are formed of a plastic material, one or more mold inserts or the like can be implemented such that the size, shape, and/or position of protrusions 60, 64 can be manipulated to accommodate use of braces 14, 14A, 14B, and thereby dispenser 12, with products having alternate manufacturer and/or coreless roll web material product configurations as well as other coreless rolled web material variations such as rolls of different lengths and/or widths. Such considerations further improve the versatility associated with placement and continued use of dispenser 12 as coreless rolled web material manufacturers manufacturing and/or product preferences change over time.
As alluded to above and disclosed further below, tab 74 associated with second side 56 of each discrete roll brace 14, 14A, 14B is constructed to cooperate with cover 22 such that, when cover 22 is closed and a coreless roll of web material is associated with one or more of roll braces 14, 14A, 14B, each roll brace 14, 14A, 14B, and the respective protrusions 60, 64 associated therewith, are compressed into operative engagement with a respective coreless roll of web material. As used herein, the compressed operative engagement between the respective roll braces 14, 14A, 14B and the underlying coreless roll of web based material is to be understood as a selective rotational association wherein the respective roll brace and the underlying roll are associated with one another such that the roll can rotate in response to a user pull force without separation or tearing of the web based material until desired by the user. The operative rotational association is further defined as a cooperation between the discrete roll of coreless web material and the respective roll brace wherein binding or wedging of the respective roll relative to the respective roll brace is limited or otherwise mitigated to facilitate manual incremental dispensing of the entire contents of the coreless roll of web material until the discrete roll of material is depleted or otherwise consumed.
Tab 74 associated with each respective roll brace 14, 14A, 14B is further constructed to facilitate placement of an initial and/or subsequent coreless roll of web material relative to the respective brace 14, 14A, 14B. As disclosed above, each arm 46 and respective sides 52, 54 of each brace 14, 14A, 14B have an at rest orientation, configuration or shape wherein protrusions 60, 64 can loosely engage and self-support a respective coreless roll of web material when the respective roll is disposed between sides 52, 54. At rest, sides 52, 54 are preferably oriented such that protrusions 60, 64 are oriented slightly axially inboard or provide a compressive force associated with a dimension associated with the respective end faces of a respective roll of coreless web material. Tab 74 can be gripped by the user when dispenser 12 is open such that side 56 can be displaced in an outward axial direction or a direction generally aligned with the intended axis of rotation of the associated coreless roll of web material relative to side 54 such that a coreless roll of web material can be more conveniently positioned between the terminal free ends of protrusions 60, 64. Releasing tab 74, and thereby the deflection of side 56 relative to side 52, allows protrusions 60, 64 to engage the coreless center portion of a discrete roll positioned therebetween. Preferably, when tab 74 released, the respective brace 14, 14A, 14B returns toward the at rest orientation and provides a contact engagement between protrusions 60, 64 and the coreless roll of web material that is sufficient such that protrusions 60, 64 engage and support the respective roll. It is appreciated that in some configuration, manual manipulation of side 56 toward side 52 of the respective brace 14, 14A, 14B may provide overlapping or more robust frictional interaction between protrusions 60, 64 and the underlying roll of web material to provide a more secure supported interaction therebetween prior to the closing of cover 22 of dispenser 12.
In one embodiment of the present invention, shown in
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In the embodiment of the present invention in which the roll brace 14 is in the relaxed position, as shown in
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Regarding of the orientation of the tab as being associated with either of side 56 of brace 14, 14A, 14B or the interior surface of cover 22, as a result of this compression force, the roll brace 14 transitions from the relaxed or at rest position shown in
In the embodiment of the present invention in which the roll brace 14 is in the contracted position, as shown in
In use, and in accordance with one embodiment of the present invention, the dispenser 12 is placed in an open position by means of pivoting the cover 22 away from the base 20, about hinges 82. In the open orientation, the first and second roll braces 14A, 14B will expand into their relaxed positions, which is to say that the distance from the first protrusion 60 to the second protrusion 64 expands to a distance approximately equal to or slightly greater than a width of the coreless roll of web material, as described above. A first coreless roll of web material is then inserted into the first roll brace 14A, such that the first and second protrusions 60, 64 are aligned with the relative center of the roll. Similarly, a second coreless roll of web material is then inserted into the second roll brace 14B, such that the first and second protrusions 60, 64 are aligned with the relative center of the roll. The roll shield 44 is then maneuvered into its starting position, adjacent the first roll brace 14A, as shown in
The dispenser of the present invention may have other applications aside from use with rolls of web material, such as but not limited to tissue paper, hand towel, and toilet paper. Although the invention has been herein shown and described in what is perceived to be the most practical and preferred embodiments, it is to be understood that the invention is not intended to be limited to the specific embodiments set forth above. Rather, it is recognized that modifications may be made by one of skill in the art of the invention without departing from the spirit or intent of the invention and, therefore, the invention is to be taken as including all reasonable equivalents to the subject matter of the appended claims. The present invention has been described in terms of the preferred embodiment, and it is recognized that equivalents, alternatives and modifications, aside from those expressly stated, are possible and within the scope of the appending claims.