Rolled product dispenser with multiple cutting blades and cutter assembly for a rolled product dispenser
10604374 ยท 2020-03-31
Assignee
Inventors
Cpc classification
Y10T83/896
GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
Y10T83/323
GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
A47K2010/3681
HUMAN NECESSITIES
A47K10/36
HUMAN NECESSITIES
International classification
B65H35/00
PERFORMING OPERATIONS; TRANSPORTING
Abstract
There is provided a rolled product dispenser for dispensing a web of rolled product. The rolled product dispenser includes a housing, a dispensing assembly operationally connected to the housing and interacting with the web of the rolled product and a cutting assembly cooperating with the dispensing assembly to sever the web of rolled product. The cutting assembly includes at least two cutting blades, each one of the cutting blades having a first end and a second end. The first end is pivotally mounted and the second end is operationally connected to a guiding assembly for guiding the blade between a cutting position and a non-cutting position.
Claims
1. A rolled product dispenser for dispensing a web of rolled product having a web width, the rolled product dispenser comprising: a housing; a dispensing assembly at least partially housed in the housing, interacting with the web of rolled product, and comprising a rotating drum having a drum length; a cutting assembly cooperating with the dispensing assembly to cut the web of rolled product along the web width, the cutting assembly comprising at least two longitudinally extending cutting blades and a guiding assembly, each one of the at least two longitudinally extending cutting blades being at least partially contained in the rotating drum and having a pivotal end and a distal end with a cutting edge provided between the pivotal and distal ends, the pivotal end of each one of the at least two longitudinally extending cutting blades being pivotally mounted to the rotating drum to pivot about a pivoting axis and the distal end of each one of the at least two longitudinally extending cutting blades being operationally engaged with the guiding assembly for guiding the respective one of the at least two longitudinally extending cutting blades between a cutting position and a non-cutting position, the at least two longitudinally extending cutting blades overlapping each other longitudinally along at least a section thereof, wherein the cutting edges are configured to cooperate to engage the web along the web width along a same cut-line.
2. The rolled product dispenser of claim 1, wherein the cutting edge of each one of the at least two longitudinally extending cutting blades extends along a section thereof located between the pivotal end and the distal end.
3. The rolled product dispenser of claim 2, wherein the section of the at least two longitudinally extending cutting blades including the cutting edge is located adjacent to the distal end thereof and each one of the cutting edge comprises a serrated edge extending about half of the drum length.
4. The rolled product dispenser of claim 1, wherein the pivotal ends of at least two of the at least two longitudinally extending cutting blades are opposed longitudinally, the distal ends of the at least two longitudinally extending cutting blades extend outwardly of the rotating drum, the rotating drum comprises a housing and the pivotal ends of the at least two longitudinally extending cutting blades are pivotally mounted to the housing.
5. The rolled product dispenser of claim 1, wherein the pivotal ends of at least two of the at least two longitudinally extending cutting blades are opposed longitudinally, the distal ends of the at least two longitudinally extending cutting blades extend outwardly of the rotating drum, the rotating drum comprises a housing and at least one fixation element extending inwardly of the housing and the pivotal ends of the at least two longitudinally extending cutting blades are pivotally mounted to the at least one fixation element.
6. The rolled product dispenser of claim 1, wherein the at least two longitudinally extending cutting blades move simultaneously between the cutting position and the non-cutting position.
7. The rolled product dispenser of claim 6, wherein the dispensing assembly comprises supporting members mounted to the housing and supporting the rotating drum and the guiding assembly comprises a guiding groove defined in each one of the supporting members and defining a closed loop, the distal end of each one of the at least two longitudinally extending cutting blades comprises a free rolling assembly inserted into a corresponding one of the guiding grooves and the simultaneous movements of the at least two longitudinally extending cutting blades between the cutting position and the non-cutting position result from the guiding grooves presenting a similar configuration and a similar orientation.
8. The rolled product dispenser of claim 1, wherein the at least two longitudinally extending cutting blades have a length which substantially corresponds to the drum length and the at least two longitudinally extending cutting blades translate substantially radially with respect to the rotating drum.
9. A rolled product dispenser for dispensing a web of rolled product having a web width, the rolled product dispenser comprising: a housing; a rotating drum at least partially housed in the housing and having a drum length delimited by two opposed drum ends; and at least two longitudinally extending cutting blades at least partially contained in the rotating drum, each one of the at least two longitudinally extending cutting blades being pivotally mounted inside the rotating drum to be configurable between a non-cutting configuration and a cutting configuration, each one of the at least two longitudinally extending cutting blades having a pivotal end mounted to the rotating drum, a distal end movable along a path inside the housing for configuring the at least two longitudinally extending cutting blades repeatedly in the non-cutting configuration and the cutting configuration, and a cutting edge provided between the pivotal and distal ends, wherein the pivotal end of a first one of the at least two longitudinally extending cutting blades is located adjacent to one of the two drum ends and opposed longitudinally to the pivotal end of a second one of the at least two longitudinally extending cutting blades located adjacent to the other one of the drum ends, wherein the cutting edges are configured to cooperate to perforate engage the web along the web width along a same cut-line.
10. The rolled product dispenser of claim 9, wherein the cutting edge of each one of the at least two longitudinally extending cutting blades extends along a section thereof located between the pivotal end and the distal end.
11. The rolled product dispenser of claim 10, wherein the section of the at least two longitudinally extending cutting blades including the cutting edge is located adjacent to the distal end thereof and the at least two longitudinally extending cutting blades have a length which substantially corresponds to the drum length and each one of the cutting edges comprises a serrated edge extending about half of the drum length.
12. The rolled product dispenser of claim 9, wherein the rotating drum comprises a housing and the pivotal end of the at least two longitudinally extending cutting blades is pivotally mounted to the housing.
13. The rolled product dispenser of claim 9, wherein the rotating drum comprises a housing and at least one fixation element extending inwardly of the housing and the pivotal ends of the at least two longitudinally extending cutting blades are pivotally mounted to the at least one fixation element.
14. The rolled product dispenser of claim 9, wherein the at least two longitudinally extending cutting blades move simultaneously between the cutting configuration and the non-cutting configuration and the at least two longitudinally extending cutting blades translate substantially radially with respect to the rotating drum.
15. The rolled product dispenser of claim 9, further comprising supporting members mounted to the housing and supporting the rotating drum, wherein at least one of the supporting members has a guiding closed loop groove defined therein and defining the path; and wherein the distal end of each one of the at least two longitudinally extending cutting blades comprises a free rolling assembly insertable into the guiding closed loop groove and defining a guiding assembly therewith.
16. A cutting assembly for a rolled product web having a web width, the cutting assembly comprising: a rotating drum having a drum length; and at least two longitudinally extending cutting blades at least partially contained in the rotating drum, each one of the at least two longitudinally extending cutting blades having a pivotal end and a distal end with a cutting edge provided between the pivotal and distal ends and being pivotally mountable and configurable between a non-cutting configuration and a cutting configuration, the pivotal end of each one of the at least two longitudinally extending cutting blades being pivotally mounted to the rotating drum and independently of the other one of the at least two longitudinally extending cutting blades, the distal end of each one of the at least two longitudinally extending cutting blades being movable along a closed loop path for displacing the respective one of the at least two longitudinally extending cutting blades between the non-cutting configuration and the cutting configuration, wherein the pivotal end of a first one of the at least two longitudinally extending cutting blades is opposed longitudinally to the pivotal end of a second one of the at least two longitudinally extending cutting blades, and wherein the cutting edges are configured to cooperate to engage the web along the web width and along a same cut-line.
17. The cutting assembly of claim 16, wherein the cutting edge of each one of the at least two longitudinally extending cutting blades extends along a section thereof located between the pivotal end and the distal end and the section of the at least two longitudinally extending cutting blades including the cutting edge is located adjacent to the distal end thereof.
18. The cutting assembly of claim 16, wherein the at least two longitudinally extending cutting blades have a length which substantially corresponds to the drum length and each one of the cutting edges extend about half of the drum length.
19. The cutting assembly of claim 16, wherein the at least two longitudinally extending cutting blades are configured to move simultaneously between the cutting configuration and the non-cutting configuration.
20. A cutting assembly for a rolled product having a web width, the cutting assembly comprising: a rotating drum having a drum length; at least two longitudinally extending cutting blades at least partially contained in the rotating drum, each one of the at least two longitudinally extending cutting blades having a pivotal end and a distal end, opposed to the pivotal end, with a cutting edge provided between the pivotal and distal ends; and a guiding assembly, wherein the at least two longitudinally extending cutting blades overlap each other longitudinally along at least a section thereof, the pivotal end being pivotally mounted to the rotating drum, and the distal end being operationally engaged with the guiding assembly for configuring the at least two longitudinally extending cutting blades between a non-cutting configuration in which the at least two longitudinally extending cutting blades are spaced-apart from the rolled product and a cutting configuration in which the at least two longitudinally extending cutting blades are engaged with the rolled product and configured to cooperate to engage the web along the web width and along a same cut-line.
21. The cutting assembly of claim 20, wherein the cutting edge of each one of the at least two longitudinally extending cutting blades extends along a section thereof located between the pivotal end and the distal end and the section of the at least two longitudinally extending cutting blades including the cutting edge is located adjacent to the distal end thereof.
22. The cutting assembly of claim 20, wherein the at least two longitudinally extending cutting blades have a length which substantially corresponds to the drum length and each one of the cutting edges extend about half of the drum length.
23. The cutting assembly of claim 20, wherein the rotating drum comprises a housing and the pivotal end of the at least two longitudinally extending cutting blades is pivotally mounted to the housing.
24. The cutting assembly of claim 20, wherein the rotating drum comprises a housing and a fixation element extending inwardly of the housing and the pivotal end of the at least two longitudinally extending cutting blades is pivotally mounted to the fixation element.
25. The cutting assembly of claim 20, wherein the at least two longitudinally extending cutting blades are configured to move simultaneously between the cutting configuration and the non-cutting configuration and the at least two longitudinally extending cutting blades extend substantially tangential to a periphery of the rotating drum in the non-cutting configuration and substantially normal to the periphery of the rotating drum in the cutting configuration.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
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DETAILED DESCRIPTION
(9) It will be noted that in the following description, the same numerical references refer to similar elements. The embodiments, geometrical configurations, materials mentioned and/or dimensions shown in the figures or described in the present description are preferred embodiments only, given solely for exemplification purposes. Moreover, it will be appreciated that positional descriptions such as upward, downward, forward, backward, above, below, left, right and the like should, unless otherwise indicated, be taken in the context of the figures and should not be considered limiting.
(10) Referring now to the drawings and, more particularly, referring to
(11) In an embodiment, and without being limitative, the housing 12 is made of moulded plastic such as acrylonitrile butadiene styrene (ABS). However, other materials offering similar characteristics could be used in the construction of the housing 12. Moreover, even though the illustrated embodiment presents the supporting members 18 and 20 as being detachably mounted on the housing 12, one skilled in the art will easily understand that the supporting members 18 and 20 could be integral to the housing 12.
(12) Referring to
(13) As mentioned above, in an embodiment, the dispenser 10 is provided with a rotating drum 16 mounted between supporting members 18 and 20. As shown in
(14) As shown in
(15) In an embodiment better shown in
(16) However, when the cover 22 is in the closed configuration, shown in
(17) Furthermore, in the illustrated embodiment, a biasing arm 32 extends downward from the cover 22 and drives the web of the rolled product 15 against the peripheral wall 16a of the rotating drum 16. The above mentioned assembly results in the rotating drum 16 rotating at the same speed as the web of rolled product 15 during dispensing and that no slippage occurs.
(18) Now referring to
(19)
(20) It should be understood that, for the sake of clarity,
(21) In the illustrated embodiment, the second end 46 of the blade 38, known as the guiding end or distal end, is provided with a male member. In an embodiment, the male member is a free rolling assembly 48 which for example and without being limitative, the free rolling assembly can be a ball bearing system. The free rolling assembly 48 projects longitudinally outside of the rotating drum 16 into a female member formed within the corresponding supporting member 18. In the illustrated embodiment, the female member is a guiding groove 50 forming a closed looped groove carved into the supporting member 18, around the attachment cavity 54, and having an egg-like shape. As the rotating drum 16 rotates, as a consequence of the pulling of the free end of the rolled product 14 by a user, the free rolling assembly 48 of the guiding end 46 of the blade 38 moves along the path of the guiding groove 50. The egg-like shape of the guiding groove 50 drives the blade to move longitudinally up and down during the rotation of the rotating drum 16.
(22) In alternative embodiments and without being limitative, the male member, embodied in the illustrated embodiments by the free rolling assembly 48, can be replaced by other types of path or cam followers, such as a sliding member engaged in the guiding groove 50.
(23) Although not illustrated in
(24) In an embodiment, the cutting blades 38, 40 are made of metal or plastics in order to be rigid enough to sever the rolled product and provide sufficient wear resistance. One skilled in the art will however readily understand that, in alternative embodiments, other material could be used. Moreover, the edge of the cutting blades 38, 40 which contacts the web of rolled product 15 can be serrated in order to facilitate the severing of the web of rolled product 15. The amount of teeth provided on the serrated blades may vary from the illustrated embodiment where five teeth are provided. One skilled in the art will also understand that, in alternative embodiments, multiple blades having a different amount of teeth may be used as part of a single cutting assembly.
(25) As better illustrated in
(26) In the illustrated embodiment, the level of the cutting blades 38, 40 is dictated by the distance between the free rolling assemblies 48, 49 and the corresponding attachment cavity 54 at a given point in time. For example, the blades 38, 40 will be at their lowest when the distance between the free rolling assemblies 48, 49 and the corresponding attachment cavity 54 is the shortest. Similarly, the peak of the extended cutting position will be reached when the free rolling assemblies 48, 49 are positioned at the point farthest from the corresponding attachment cavity 54. In the presented embodiment, the position of the attachment cavity 54 and the egg-like configuration of the guiding grooves 50, 52 result in the cutting blades remaining in the lowered non-cutting position for a portion of a revolution of the rotating drum 16 that is significantly longer than the extended cutting position. This configuration provides the desired brief extension of the cutting blades 38, 40 outside of the rotating drum 16 during a rotation of the rotating drum 16, for severing the web of roll product 15.
(27) In an alternative embodiment, the configuration of the guiding grooves 50, 52 may be different than the illustrated egg-like configuration. For example and without being limitative, the guiding grooves 50, 52 may present an eccentric rounded configuration. In another alternative embodiment, the guiding grooves 50 and 52 may even present a different configuration from one another.
(28) In
(29) A sequence of operation of the first cutting blade 38 and the second cutting blade 40, according to one embodiment, is illustrated in
(30) In the illustrated embodiment, the sequence of operation of the first cutting blade 38 and the second cutting blade 40 is directly related to the rotative movement of the rotating drum 16. Therefore, the movement of the blades 38, 40 can be defined in relation with the rotation angle of the rotating drum 16. For example and without being limitative, the first cutting blade 38 can be brought in the cutting position when the rotation angle of the rotating drum 16 is between 0 and 20 degrees from a starting rest position and the second cutting blade can be brought in the cutting position when the rotation angle of the rotating drum is between 20 and 30 degrees from the starting rest position. As will be easily understood, in an alternative embodiment, other alternative sequences may be provided.
(31) It will be understood that the guiding assembly used to guide the cutting blades 38, 40 between the retracted non-cutting position and the extended cutting position is not limited to the above described embodiment. In fact, one skilled in the art will readily understand that any guiding assembly resulting in the raised and lowered movement of the guiding ends 46, 47 of the blades 38, 40, in order to move the blades 38, 40 between a non-cutting and a cutting position, simultaneously or consecutively, could be used. For example and without being limitative, a cam or a spring system could also be used for forming the guiding assembly.
(32) In an alternative embodiment and without being limitative, a dispenser having at least two longitudinally extending cutting blades, pivotally mounted inside the housing and configurable between a non-cutting position and a cutting position, could be provided without the need of a rotating drum or any roller assembly. In such an embodiment, the movement of the cutting blades between a non-cutting position and a cutting position may be activated by an activation mean such as, without being limitative, a push button or a sensor sensing that a predetermined length of paper has been dispensed.
(33) In another alternative embodiment and without being limitative, a cutting assembly comprising at least two cutting blades having the characteristics described in the present description to be configurable between a non-cutting position and a cutting position, could be provided independently from the dispenser in which it is destined to be installed into.
(34) In an alternative embodiment, the cutting blades can be shorter than the width of the web of rolled product being cut and the two or more cutting blades can be disposed successively along the longitudinal axis of the rotating drum, if any, or along the width of the rolled product web. The pivotable end of the cutting blades can be anywhere along the width of the rolled product web. For instance and without being limitative, if the cutting assembly includes two cutting blades mounted sequentially in an adjacent configuration, their pivotable end can be provided at opposed or adjacent ends thereof (for instance, in the middle of the width of the web). Furthermore, in an alternative embodiment, the cutting blades can pivot about their longitudinal axis, instead of having a pivotable end. For instance and without being limitative, the blades can pivot between the non-cutting position wherein they extend substantially parallel to the web or tangential to the rotating drum, if any, and a cutting position wherein they extend substantially perpendicularly to the web or normal to the periphery of the rotating drum. For instance, the cutting blades can be mounted to a periphery of the rotating drum and rotate therewith. Once again, the cutting blades can be configurable into the cutting position either sequentially or simultaneously. Combinations of the above-described embodiments can also be foreseen.
(35) Furthermore, if the cutting blades are configured sequentially in the cutting position, a first one of the cutting blades can first engage the web without cutting the web entirely and a second one of the cutting blades can then completely sever the web. Thus, the two cutting blades cooperate to completely sever the web and the pressure applied on both blades is thus reduced.
(36) Moreover, even though the presented embodiments are for a touchless dispenser, one skilled in the art will easily understand that the cutting assembly could be designed in order to work with a traditional dispenser where a user activates the cutting mechanism after a desired length of rolled paper product has been dispensed.
(37) Several alternative embodiments and examples have been described and illustrated herein. The embodiments of the invention described above are intended to be exemplary only. A person of ordinary skill in the art would appreciate the features of the individual embodiments, and the possible combinations and variations of the components. A person of ordinary skill in the art would further appreciate that any of the embodiments could be provided in any combination with the other embodiments disclosed herein. It is understood that the invention may be embodied in other specific forms without departing from the spirit or central characteristics thereof. The present examples and embodiments, therefore, are to be considered in all respects as illustrative and not restrictive, and the invention is not to be limited to the details given herein. Accordingly, while the specific embodiments have been illustrated and described, numerous modifications come to mind without significantly departing from the scope of the invention.