CA2432933C - Hand-held tape dispenser with integrated brake mechanism - Google Patents
Hand-held tape dispenser with integrated brake mechanism Download PDFInfo
- Publication number
- CA2432933C CA2432933C CA002432933A CA2432933A CA2432933C CA 2432933 C CA2432933 C CA 2432933C CA 002432933 A CA002432933 A CA 002432933A CA 2432933 A CA2432933 A CA 2432933A CA 2432933 C CA2432933 C CA 2432933C
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- Canada
- Prior art keywords
- hub
- tape
- adhesive tape
- cylindrical
- tape dispenser
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
- B65H35/0006—Article or web delivery apparatus incorporating cutting or line-perforating devices
- B65H35/002—Hand-held or table apparatus
- B65H35/0026—Hand-held or table apparatus for delivering pressure-sensitive adhesive tape
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
- B65H35/0006—Article or web delivery apparatus incorporating cutting or line-perforating devices
- B65H35/0073—Details
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- Adhesive Tape Dispensing Devices (AREA)
- Braking Arrangements (AREA)
Abstract
A tape dispenser (10, 110) is provided for dispensing rolled adhesive tape (12) mounted on a hub (14), where the hub comprises at least an outer cylindrical wall (18) onto which the adhesive tape is spirally wound, and where the adhesive tape is at least as wide as the hub. The tape dispenser comprises a first side member (30), a second side member (32), and a cutter member (34). Each of the side members has a first major side portion (36) which overlies a roll of adhesive tape within the tape dispenser. At least t he first major side portion of at least one of the side members is formed of a flexible plastics material so that, when the flexible first major side porti on is pressed using finger pressure, the sides of the tape hub interfere with a t least portions of the inner surfaces of the first major side portions of the side members, such that a braking effect is imparted to the hub to preclude unreeling of the spirally wound adhesive tape from the hub.
Description
HAND-HELD TAPE DISPENSER WITH INTEGRATED BRAKE MECHANISM
[0001] Thisinventionrelatestohand-heldtapedispensers,andparticularlytohand-heldtape dispensers for adhesive tape of the sort which is used for ordinary household and office purposes.
The invention particularly is directed to tape dispensers for dispensing household tape, where the dispenser has a selectively operable brake mechanism to preclude unwanted dispensing or unreeling of the tape, especially when it is being cut.
[0001] Thisinventionrelatestohand-heldtapedispensers,andparticularlytohand-heldtape dispensers for adhesive tape of the sort which is used for ordinary household and office purposes.
The invention particularly is directed to tape dispensers for dispensing household tape, where the dispenser has a selectively operable brake mechanism to preclude unwanted dispensing or unreeling of the tape, especially when it is being cut.
[0002] Two kinds oftape dispenser are generallyknown, for two different kinds of tape. One kind of tape is wide tape - typically 6 to 10 cm wide, of the sort which is typically used to seal boxes and cartons, and the Iike. Many applications of such tape axe from automatic machines; however, there are also many hand-held dispensers of the sort which are particularly used in warehouses and stores, fox purposes of assembling andlor sealing boxes.
[0003] The other kind of adhesive tape which is in very wide usage, and for which the present invention is particularly intended, is that which is used for household or office purposes.
Typically, such tape ranges from 1 to 2 cm in width, and may have varying degrees of tackiness depending on whether the tape is intended for permanent use or temporary use.
Some such tapes may have a high gloss, others may have a low gloss such that they may be written on and are essentially invisible to imaging equipment such as photocopiers and facsimile machines.
Typically, such tape ranges from 1 to 2 cm in width, and may have varying degrees of tackiness depending on whether the tape is intended for permanent use or temporary use.
Some such tapes may have a high gloss, others may have a low gloss such that they may be written on and are essentially invisible to imaging equipment such as photocopiers and facsimile machines.
[0004] For purposes of the present invention, such adhesive tape'is referred to herein as "household tape". Household tape is generally sold and available in two formats: in rolls that are typically sold in boxes, for the purpose of being placed in a dispenser; and already installed in a dispenser. Dispensers, particularly of the hand-held variety, are generally formed of a moulded plastics material, and may or may not be capable of being disassembled for purposes of installing a new roll of adhesive tape therein. It is that kind of hand-held dispenser which is particularly the subject matter of the present invention.
[0005] Even such dispensers as are described immediately above may have metal cutters, although generally they are formed with an integral plastic cutter. Metal cutters are more likely to be found, however, on desktop dispensers which axe generally very heavy, and into which a roll of ....eusoe~v~~/~~
household adhesive tape is placed to be dispensed therefrom. Also, metal cutters may be found on older tape dispensers from before 1990 or so.
household adhesive tape is placed to be dispensed therefrom. Also, metal cutters may be found on older tape dispensers from before 1990 or so.
[0006] Of course, any tape dispenser which has a metal cutter generally is such that it has a superior ability to cut tape due to the cutter's sharper and thinner construction; but such tape dispensers are more expensive to mmufacture. Even if it were possible to provide plastic cutters which have significant sharpness, they become dull in use, and present somewhat of a danger -especially to the fingers of young children who might well be using household adhesive tape in their play, or for a school project or the like.
[0007 Plastic cutters may also accumulate shreds of adhesive tape or particles of adhesive, over time, and become somewhat clogged as a result. On the other hand, it has been discovered that if a plastic cutter- especially one which is molded integrally with the structure ofthe tape dispenser - is wider than the adhesive tape by at least about 25%, then after the adhesive tape has been unreeled it is possible to achieve a satisfactory cutting effect.
[0008] Of even greatex concern in most instances is the fact that hand-held adhesive tape dispensers tend to overrun when the tape is being dispensed by pulling on the outer end thereof and unreeling the tape from the roll mounted on a hub within the tape dispenser.
Still further, because of the somewhat loose condition of the free end of the tape between where it has left the roll and the cutter, and due particularly as well to the general dullness of plastic cutters, obtaining a clean cut of a particular desired length of tape may be difficult. Quite often, considerable manual dexterity is required, with some experimentation as to aligning the length of the tape which is to be cut from the roll at a particular angle either diagonally or vertically with respect to the cutter.
[0009] It has been observed that such difficulties, particularly when the adhesive tape is to be cut, can be overcome by applying some kind of braking action to the unreeled portion of adhesive tape - generally by pressing down with a finger on the tape just behind the cutting edge of the cutter on the dispenser. Even that arrangement is unsatisfactory, requiring considerable manual dexterity, and patience. On the other hand, a braking action applied to the roll of tape, and particularly to the hub on which the adhesive tape has been spirally wound, will achieve the desired braking effect on the tape as it is being cut, thereby permitting an easier cut. Still further, applying minimal braking action on the hub, while at the same time unreeling adhesive tape from the hub, can result in a very specific length of tape being unreeled and cut, if necessary.
[0010] Another manner of applying a braking action is to have a brake element which may selectively be applied against the circumference of the roll of tape. However, because the diameter of the roll of tape decreases as tape is unreeled therefrom, a considerable amount of travel is required for the braking element, especially when the last portions of the adhesive tape are being unreeled from the roll and off the hub on which they have been spirally wound.
[OOII] It is possible to provide an adhesive tape dispenser fox household adhesive tapes where one or both sides of the dispenser has certain flexibility, whereby a braking action can be applied against one or both sides of a roll of tape, or against one or both ends of the hub on which the tape has been spirally wound. Moreover, as a roll of tape is unreeled its diameter becomes smaller, and therefore the side surface of the roll of tape becomes smaller and a braking action against the side of the roll of tape may become less effective. Still further, depending on the conditions in which the tape has been made, spirally wound on the hub, and stored, it is possible that a deposit of adhesive might develop on the inside surface of the side of the tape dispenser if the side has been intermittently pressed against the side surface of the roll of tape, and that condition might cause considerable difficulty in smoothly unreeling adhesive tape away from the roll.
[0012] Another manner of applying a braking action is to have a brake element which may selectively be applied against the circumference of the roll of tape. However, because the diameter of the roll of tape decreases as tape is unreeled therefrom, a considerable amount of travel is required for the braking element, especially when the last portions of the adhesive tape are being unreeled from the roll and off the hub on which they have been spirally wound.
[0013] Several representative examples of tape dispensers, both for industrial and commercial tape which tends to be fairly wide, as noted above, and for narrower household tape, are noted below.
[0014] Schleicher United States Patent 4,238,272 issued December 9, 1980 teaches a tape dispenser of the sort which may apply either to wide or narrow adhesive tapes, but is particularly of the sort which has relevance to narrow or household adhesive tapes. The device includes a post which extends between panels which are tear-drop shaped and between which the spool of tape is mounted, with the post being mounted in a position which is intermediate the spool of tape and a slot at the end of the dispenser through which the tape is dispensed directly onto a surface. A spring member is attached to the post, with one end having a serrated cutting edge and anvil which are disposed in the slot opening, and the other end impinges resiliently on the supply roll to act as a brake when a cutting action is undertaken.
[0015] Mathna et al United States Patent 4,729,518, issued March 8, 1988, teaches a tape dispenser of the sort which is a hand-held dispenser typically used for household adhesive tapes, and has a housing with hub and a roll of tape which is journaled on the hub. A
paper backcard is disposed around one end of the hub and has a plurality of generally triangular projecting poutions which proj ect between the hub and the core. Those proj ections provide a friction brake between the hub and the core which thereby restricts rotation of the hub to an extent that unwanted rotation of the hub and uncoiling of the tape when it is withdrawn from the dispenser will be precluded. A
metal cutter is included.
[0016] A self cutting tape dispenser, of the sort which may particularly be useful in commercial and industrial applications, is taught in Arnoid United States Patent 5,171,397, issued December 15, 1992. Hare, the tape dispenser has a moveable cover and a leeeper which slides into a circurnferential housing so as to keep a roll of tape on an axle. A brake plate is provided, and is such that when tape is being dispensed the thumb is inserted into an opening so as to push the brake plate against the circumference of the roll of tape. W fact, the roll of tape is pushed against the housing back at a time when a tape-cutting blade at the outside wall of the dispenser is pushed against the tape and given a twist so as to cut the tape. The dispenser is intended for one hand operation, and is easily refillable.
[0017] Another patent which particularly is directed to a hand-held dispenser used for dispensing industrial or commercial adhesive tape is Luhman et al United States Patent 5,754,342, which provides a brake assembly that has a curved brake actuator and a flat brake plate. The structure acts to inhibit free rotation of the tape roll, and therefore the further dispensing of adhesive tape from the roll, when the operator applies pressure by squeezing with the thumb against the brake actuator so as to bend the brake plate about the tape roll and to increase pressure against the tape roll so as to facilitate tape cutting or tape stretching.
[0018] The present invention provides a tape dispenser for dispensing rolled adhesive tape mounted on a hub, where the hub comprises at least an outer cylindrical wall onto which the adhesive tape is spirally wound, and where the adhesive tape is at least as wide as the hub. The tape dispenser comprises a first side member, a second side member, and a cutter member.
[0019] Each of the first and second side members has a frst major side portion which overlies a roll of adhesive tape within the tape dispenser, and a second minor side portion at an end thereof remote from the first major side portion.
[0020] The cutter member is mo~.mted between the second minor side portions of the first and second side members.
[0021 ] At least one of the first and second side members has at least a first cylindrical axle portion formed centrally on the inside surface of the first major side portion thereof. Furthermore, the at least first cylindrical axle portion has a cylindrical axis.
[0022] At least the first major side portion of at least one of the first and second side members is foamed of a flexible plastics material so that, when the flexible first major side portion is pressed using finger pressure in a direction parallel to the cylindrical axis of the at least first cylindrical axle portion, the sides of the tape hub interfere with at least portions of the inner surfaces of the first major side portions of the first and second side members, such that a braking effect is imparted to t he hub to preclude unreeling of the spirally wound adhesive tape from the hub.
[0023] The hub further includes an inner cylindrical wall, an outer cylindrical wall, and a centrally located radially extending wall between the inner and outer cylindrical walls, so as to have wide "I" cross-section, and an annular void formed between the inner and outer cylindrical walls at each side of the radially extending wall. The adhesive tape is spirally wound on the hub.
[0024] In keeping with the present invention, the first side member has the first cylindrical axle portion formed centrally on the inside surface of the first major side portion thereof, and upstanding therefrom, and the second side member has a second cylindrical axle portion formed centrally on the inside surface of the first maj or side portion thereof, and upstanding therefrom. The first and second cylindrical axle portions are dimensioned so as to fit one inside the other when the first and second side members are assembled together, and the joined first and second cylindrical axle portions have a common cylindrical axis.
[0025] In one embodiment of the present invention, at least the first side member has at least one brake spoke upstanding from the inside surface of the first maj or portion thereof, and the at least one brake spoke is arranged so as to be radially extending away from the first cylindrical axle portion and spaced away therefrom. When the at least first side member is flexed towards the second side member, at least one brake spoke extends into the annular void on the side of the hub which faces the first side member so as to cause frictional engagement between the at least one brake spoke and at least one of the inner and outer cylindrical walls of the hub.
[0026] Typically, there is a plurality of brake spokes upstanding from the inside surface of the first major side portion of the at least first side member. Also, the tape dispenser may further include a plurality of arcuate ribs formed on the inside surface of the first major side portion of the first side member. The arcuate ribs are spaced away from the first cylindrical axle portion, and are interposed among the plurality of brake spokes. Moreover, the tape dispenser may further include at least one channel which is formed through the thickness of the material of the first major side portion of the first side member, in the region of and extending from each of the arcuate ribs. The plurality of brake spokes and the plurality of arcuate ribs are each configured so as to contact the outer cylindrical wall of the hub, so as to maintain the hub centered over the axle portions.
[0027] In another embodiment of the present invention, the first cylindrical axle portion has an outer end remote from the first side member, and a pair of wing-like proj ections formed at diametrically opposed sides thereof so as to extend radially outwardly therefrom at a location remote from the outer end thereof; and the second cylindrical axle portion has an inner end at the second side member, and has a pair of notches formed at diametrically opposed sides thereof so as to receive a respective one of the pair of wing-lilce projections of the first cylindrical axle portion. The width and length of each of the notches is sufficient to receive the wing-like projections therein when the first and second side members are assembled together. Accordingly, the wing-like proj ections interfere with the ends of the notches to preclude disassembly of the first and second side members one from the other, and the wing-like projections move in the notches in a direction towards the second side member when the flexible first side member is flexed.
[002] Generally, the first cylindrical axle portion is flexible. Thus, when the outer end is squeezed in a manner so that the wing-like projections move diametrically toward each other and are disassociated from the notches of the second cylindrical axle portion, the tape dispenser may be disassembled so as to replace a hub from which adhesive tape has been unreeled with another hub having adhesive tape spirally wound thereon.
[0029] More typically, slits are formed axially along the first cylindrical axle portion at each side of each of the wing-like projections, and the slits extend from the outer end of the first cylindrical axle portion towaxds the first major side portion of the first side member to a length beyond the wing-like projection. Therefore, when the outer end of the first cylinch-ical axle portion is squeezed in a manner so that the wing-like proj ections move diametrically towards each other and are disassociated from the notches of the second cylindrical axle portion, the tape dispenser may be disassembled so as to replace a hub from which adhesive tape has been unreeled with another hub having adhesive tape spirally wound thereon.
[0030] Typically, the first and second side members of any tape dispenser in keeping with the present invention, are formed of molded plastics material.
[0031] In keeping with another provision of the present invention, the cutter member is formed integrally with one of the first and second side members. Each of the second minor side portions of the first and second side membexs is flared upwardly and outwardly in the region of the cutter member. The cutter member has a serrated outer cutting edge which is placed high in the region of the flared second minor side portions, and the width of the cutting edge exceed the width of the adhesive tape by at least 25%. In such a tape dispenser, the cutting edge is aligned at an angle to each of the flared second minor side portions.
[0032] Two embodiments of the hand-held tape dispensers with integrated brake mechanism of the present invention will be discussed; the first embodiment of the hand-held tape dispenser of the present invention is shown in Figures 1 through 4, while the second embodiment of the hand-held tape dispenser of the present invention is shown in Figures 5 through 10. It is important to note that common elements of the two embodiments are designated by the same reference numerals.
[0033] In the accompanying drawings:
[0034] Figure 1 is a general perspective view of a first embodiment of an assembled tape dispenser, in keeping with the present invention;
[0007 Plastic cutters may also accumulate shreds of adhesive tape or particles of adhesive, over time, and become somewhat clogged as a result. On the other hand, it has been discovered that if a plastic cutter- especially one which is molded integrally with the structure ofthe tape dispenser - is wider than the adhesive tape by at least about 25%, then after the adhesive tape has been unreeled it is possible to achieve a satisfactory cutting effect.
[0008] Of even greatex concern in most instances is the fact that hand-held adhesive tape dispensers tend to overrun when the tape is being dispensed by pulling on the outer end thereof and unreeling the tape from the roll mounted on a hub within the tape dispenser.
Still further, because of the somewhat loose condition of the free end of the tape between where it has left the roll and the cutter, and due particularly as well to the general dullness of plastic cutters, obtaining a clean cut of a particular desired length of tape may be difficult. Quite often, considerable manual dexterity is required, with some experimentation as to aligning the length of the tape which is to be cut from the roll at a particular angle either diagonally or vertically with respect to the cutter.
[0009] It has been observed that such difficulties, particularly when the adhesive tape is to be cut, can be overcome by applying some kind of braking action to the unreeled portion of adhesive tape - generally by pressing down with a finger on the tape just behind the cutting edge of the cutter on the dispenser. Even that arrangement is unsatisfactory, requiring considerable manual dexterity, and patience. On the other hand, a braking action applied to the roll of tape, and particularly to the hub on which the adhesive tape has been spirally wound, will achieve the desired braking effect on the tape as it is being cut, thereby permitting an easier cut. Still further, applying minimal braking action on the hub, while at the same time unreeling adhesive tape from the hub, can result in a very specific length of tape being unreeled and cut, if necessary.
[0010] Another manner of applying a braking action is to have a brake element which may selectively be applied against the circumference of the roll of tape. However, because the diameter of the roll of tape decreases as tape is unreeled therefrom, a considerable amount of travel is required for the braking element, especially when the last portions of the adhesive tape are being unreeled from the roll and off the hub on which they have been spirally wound.
[OOII] It is possible to provide an adhesive tape dispenser fox household adhesive tapes where one or both sides of the dispenser has certain flexibility, whereby a braking action can be applied against one or both sides of a roll of tape, or against one or both ends of the hub on which the tape has been spirally wound. Moreover, as a roll of tape is unreeled its diameter becomes smaller, and therefore the side surface of the roll of tape becomes smaller and a braking action against the side of the roll of tape may become less effective. Still further, depending on the conditions in which the tape has been made, spirally wound on the hub, and stored, it is possible that a deposit of adhesive might develop on the inside surface of the side of the tape dispenser if the side has been intermittently pressed against the side surface of the roll of tape, and that condition might cause considerable difficulty in smoothly unreeling adhesive tape away from the roll.
[0012] Another manner of applying a braking action is to have a brake element which may selectively be applied against the circumference of the roll of tape. However, because the diameter of the roll of tape decreases as tape is unreeled therefrom, a considerable amount of travel is required for the braking element, especially when the last portions of the adhesive tape are being unreeled from the roll and off the hub on which they have been spirally wound.
[0013] Several representative examples of tape dispensers, both for industrial and commercial tape which tends to be fairly wide, as noted above, and for narrower household tape, are noted below.
[0014] Schleicher United States Patent 4,238,272 issued December 9, 1980 teaches a tape dispenser of the sort which may apply either to wide or narrow adhesive tapes, but is particularly of the sort which has relevance to narrow or household adhesive tapes. The device includes a post which extends between panels which are tear-drop shaped and between which the spool of tape is mounted, with the post being mounted in a position which is intermediate the spool of tape and a slot at the end of the dispenser through which the tape is dispensed directly onto a surface. A spring member is attached to the post, with one end having a serrated cutting edge and anvil which are disposed in the slot opening, and the other end impinges resiliently on the supply roll to act as a brake when a cutting action is undertaken.
[0015] Mathna et al United States Patent 4,729,518, issued March 8, 1988, teaches a tape dispenser of the sort which is a hand-held dispenser typically used for household adhesive tapes, and has a housing with hub and a roll of tape which is journaled on the hub. A
paper backcard is disposed around one end of the hub and has a plurality of generally triangular projecting poutions which proj ect between the hub and the core. Those proj ections provide a friction brake between the hub and the core which thereby restricts rotation of the hub to an extent that unwanted rotation of the hub and uncoiling of the tape when it is withdrawn from the dispenser will be precluded. A
metal cutter is included.
[0016] A self cutting tape dispenser, of the sort which may particularly be useful in commercial and industrial applications, is taught in Arnoid United States Patent 5,171,397, issued December 15, 1992. Hare, the tape dispenser has a moveable cover and a leeeper which slides into a circurnferential housing so as to keep a roll of tape on an axle. A brake plate is provided, and is such that when tape is being dispensed the thumb is inserted into an opening so as to push the brake plate against the circumference of the roll of tape. W fact, the roll of tape is pushed against the housing back at a time when a tape-cutting blade at the outside wall of the dispenser is pushed against the tape and given a twist so as to cut the tape. The dispenser is intended for one hand operation, and is easily refillable.
[0017] Another patent which particularly is directed to a hand-held dispenser used for dispensing industrial or commercial adhesive tape is Luhman et al United States Patent 5,754,342, which provides a brake assembly that has a curved brake actuator and a flat brake plate. The structure acts to inhibit free rotation of the tape roll, and therefore the further dispensing of adhesive tape from the roll, when the operator applies pressure by squeezing with the thumb against the brake actuator so as to bend the brake plate about the tape roll and to increase pressure against the tape roll so as to facilitate tape cutting or tape stretching.
[0018] The present invention provides a tape dispenser for dispensing rolled adhesive tape mounted on a hub, where the hub comprises at least an outer cylindrical wall onto which the adhesive tape is spirally wound, and where the adhesive tape is at least as wide as the hub. The tape dispenser comprises a first side member, a second side member, and a cutter member.
[0019] Each of the first and second side members has a frst major side portion which overlies a roll of adhesive tape within the tape dispenser, and a second minor side portion at an end thereof remote from the first major side portion.
[0020] The cutter member is mo~.mted between the second minor side portions of the first and second side members.
[0021 ] At least one of the first and second side members has at least a first cylindrical axle portion formed centrally on the inside surface of the first major side portion thereof. Furthermore, the at least first cylindrical axle portion has a cylindrical axis.
[0022] At least the first major side portion of at least one of the first and second side members is foamed of a flexible plastics material so that, when the flexible first major side portion is pressed using finger pressure in a direction parallel to the cylindrical axis of the at least first cylindrical axle portion, the sides of the tape hub interfere with at least portions of the inner surfaces of the first major side portions of the first and second side members, such that a braking effect is imparted to t he hub to preclude unreeling of the spirally wound adhesive tape from the hub.
[0023] The hub further includes an inner cylindrical wall, an outer cylindrical wall, and a centrally located radially extending wall between the inner and outer cylindrical walls, so as to have wide "I" cross-section, and an annular void formed between the inner and outer cylindrical walls at each side of the radially extending wall. The adhesive tape is spirally wound on the hub.
[0024] In keeping with the present invention, the first side member has the first cylindrical axle portion formed centrally on the inside surface of the first major side portion thereof, and upstanding therefrom, and the second side member has a second cylindrical axle portion formed centrally on the inside surface of the first maj or side portion thereof, and upstanding therefrom. The first and second cylindrical axle portions are dimensioned so as to fit one inside the other when the first and second side members are assembled together, and the joined first and second cylindrical axle portions have a common cylindrical axis.
[0025] In one embodiment of the present invention, at least the first side member has at least one brake spoke upstanding from the inside surface of the first maj or portion thereof, and the at least one brake spoke is arranged so as to be radially extending away from the first cylindrical axle portion and spaced away therefrom. When the at least first side member is flexed towards the second side member, at least one brake spoke extends into the annular void on the side of the hub which faces the first side member so as to cause frictional engagement between the at least one brake spoke and at least one of the inner and outer cylindrical walls of the hub.
[0026] Typically, there is a plurality of brake spokes upstanding from the inside surface of the first major side portion of the at least first side member. Also, the tape dispenser may further include a plurality of arcuate ribs formed on the inside surface of the first major side portion of the first side member. The arcuate ribs are spaced away from the first cylindrical axle portion, and are interposed among the plurality of brake spokes. Moreover, the tape dispenser may further include at least one channel which is formed through the thickness of the material of the first major side portion of the first side member, in the region of and extending from each of the arcuate ribs. The plurality of brake spokes and the plurality of arcuate ribs are each configured so as to contact the outer cylindrical wall of the hub, so as to maintain the hub centered over the axle portions.
[0027] In another embodiment of the present invention, the first cylindrical axle portion has an outer end remote from the first side member, and a pair of wing-like proj ections formed at diametrically opposed sides thereof so as to extend radially outwardly therefrom at a location remote from the outer end thereof; and the second cylindrical axle portion has an inner end at the second side member, and has a pair of notches formed at diametrically opposed sides thereof so as to receive a respective one of the pair of wing-lilce projections of the first cylindrical axle portion. The width and length of each of the notches is sufficient to receive the wing-like projections therein when the first and second side members are assembled together. Accordingly, the wing-like proj ections interfere with the ends of the notches to preclude disassembly of the first and second side members one from the other, and the wing-like projections move in the notches in a direction towards the second side member when the flexible first side member is flexed.
[002] Generally, the first cylindrical axle portion is flexible. Thus, when the outer end is squeezed in a manner so that the wing-like projections move diametrically toward each other and are disassociated from the notches of the second cylindrical axle portion, the tape dispenser may be disassembled so as to replace a hub from which adhesive tape has been unreeled with another hub having adhesive tape spirally wound thereon.
[0029] More typically, slits are formed axially along the first cylindrical axle portion at each side of each of the wing-like projections, and the slits extend from the outer end of the first cylindrical axle portion towaxds the first major side portion of the first side member to a length beyond the wing-like projection. Therefore, when the outer end of the first cylinch-ical axle portion is squeezed in a manner so that the wing-like proj ections move diametrically towards each other and are disassociated from the notches of the second cylindrical axle portion, the tape dispenser may be disassembled so as to replace a hub from which adhesive tape has been unreeled with another hub having adhesive tape spirally wound thereon.
[0030] Typically, the first and second side members of any tape dispenser in keeping with the present invention, are formed of molded plastics material.
[0031] In keeping with another provision of the present invention, the cutter member is formed integrally with one of the first and second side members. Each of the second minor side portions of the first and second side membexs is flared upwardly and outwardly in the region of the cutter member. The cutter member has a serrated outer cutting edge which is placed high in the region of the flared second minor side portions, and the width of the cutting edge exceed the width of the adhesive tape by at least 25%. In such a tape dispenser, the cutting edge is aligned at an angle to each of the flared second minor side portions.
[0032] Two embodiments of the hand-held tape dispensers with integrated brake mechanism of the present invention will be discussed; the first embodiment of the hand-held tape dispenser of the present invention is shown in Figures 1 through 4, while the second embodiment of the hand-held tape dispenser of the present invention is shown in Figures 5 through 10. It is important to note that common elements of the two embodiments are designated by the same reference numerals.
[0033] In the accompanying drawings:
[0034] Figure 1 is a general perspective view of a first embodiment of an assembled tape dispenser, in keeping with the present invention;
7 [0035] Figure 2 is a perspective view of a first embodiment of the inside surface of a first side member of a tape dispenser in keeping with the present invention;
[0036] Figure 3 is a cross-section taken in the direction of arrows III-III in Figure 2;
[0037] Figure 4 is a fragmentary top view of the portion IV indicated in Figure 1;
[0038] Figure 5 is an exploded view of a second embodiment of a tape dispenser in keeping with the present invention;
[0039] Figure 6 is a side elevation view of a second embodiment of a tape dispenser in keeping with the present invention;
[0040] Figure 7 is a cross-section, taken in the direction of arrows A-A in Figure 6, when the sides of the tape dispenser are in an unstressed condition;
[0041] Figure 8 shows details of Figure 7, to a larger scale;
[0042] Figure 9 is similar to Figure 7, but with one side of the tape dispenser being shown in a flexed condition; and [0043] Figure 10 is similar to Figure 8, but showing details of Figure 9.
[0044] Turning first to Figures 1 to 3, some general features of a tape dispenser 10 in keeping with the present invention are now discussed.
[0045] A tape dispenser 10 is shown in assembled form at 10 in Figure 1, having a roll of adhesive tape 12 placed within the dispenser 10, and being in a condition such that adhesive tape can be unreeled from the roll 12. In well known fashion, the adhesive tape is spirally wound on the roll 12, and is unreeled therefrom when the tape is pulled from the roll in an essentially tangential direction and the roll is rotated clockwise as seen in Figure 1.
[0046] In any event, as seen in Figure 3, the rolled adhesive tape 12 is mounted on a hub I4, onto which it is spirally wound. The hub 14 comprises an inner cylindrical wall 16 and an outer cylindrical wall 18. A centrally located radially extending wall 20 is located between the inner and outer cylindrical walls 16, 18, and thus the cross-section of the hub 14 is such as to have a wide "I"
cross-section as seen particularly in Figure 3. An annular void 22 is formed between the inner and outer cylindrical walls 16,18 at each side of the radially extending wall 20, again as seen particularly in Figure 3.
[0047] The tape dispenser 10 comprises two side members; a first side member 30 -which is shown in more detail in Figure 2, discussed hereafter - and a second side member 32. A cutter member 34 is shown generally in Figure 1, and is discussed in greater detail hereafter with respect to Figure 4.
[0048] Each of the first and second side members 30, 32 has a first major side portion 36 which overlies the roll of adhesive tape 12 within the tape dispenser 10, and a minor side portion 38 which is at an end of the tape dispenser 10 that is remote from the first major side portion 36. These first and second major and minor side portions, 36, 38, respectively, are seen particularly in Figures 1 and 2. It can also be seen particularly in Figures 1 and 4 that the cutter member 34 is mounted between the second minor side portions 38 of the first and second side members 30, 32.
[0049] As seen particularly in Figures 2 and 3, at least one of the first side member 30 and the second side member 32 has a first cylindrical axle portion 40 (shown, in this case, on the first side member 30) which is fornled centrally on the inside surface of the first major side portion 36, and is upstanding therefrom - particularly as noted in Figures 2 and 3.
[0050] The other side member may also have a second cylindrical axle portion 42 which is formed centrally on the inside surface of its first major side portion 36; and if so, the second cylindrical axle portion 42 is also upstanding from the inside surface of the first maj or side portion 36 thereof, as seen in Figure 3. It will also be seen from Figure 3 that the first and second cylindrical axle portions 40, 42 are dimensioned so as to fit one inside the other when the first and second side members 30, 32 are assembled together. As noted, when there is only a single axle portion 40, it may be upstanding from , and formed integrally with, either of the first or second side members.
[0051 ] Again, referring particularly to Figures 2 and 3, it will be seen that there is at least one brake spoke 44 which is upstanding from the inside surface of the first major side portion 36 of at least the first side member 30. Typically, there is a plurality of brake spokes 44.
[0052] As can be seen particularly in Figure 2, the brake spokes 44 axe arranged so as to be radially extending away from the first cylindrical axle portion 40, and they are spaced radially away from the first cylindrical axle portion 40.
[0053] In keeping with a particular provision of a preferred embodiment of the present invention, at least the first side member 30 is flexible in the region of the first major side portion 36.
Thus, the first major side portion 36 of the first side member 30 is capable of flexing inwardly, in a direction towards the second side member 32. Having regard to Figure 3, the first major side portion 3d of the first side member 30 is capable of being flexed in a direction to the left, towards the second side member 32.
[0054] It will also be seen from Figure 3 that, when the at least first side member 32 is flexed in its first major side portion 36, towards the second side member 32, the brake spokes 44 will extend into the annular void 22 on that side of the hub 14 which faces the brake spokes 44, and thus which faces the first side member 30. It follows, therefore, that frictional engagement will occur between the plurality of brake spokes 44 and at least one of the inner and outer cylindrical walls 16, 18 of the hub 14.
[0055] Thus, a braking effect is imparted to the hub 14, which in turn precludes further unreeling of the spirally wound adhesive tape 12 from the hub 14.
[0056] t~ccordingly, as the adhesive tape is unreeled from the roll of adhesive tape 12 wound on the hub 14, generally by having first lifted it away from the cutter member 34 and pulling it away from the roll of adhesive tape 12, then when it is desired to stop further unreeling of the adhesive tape 12 and to cut the then selected length of adhesive tape 12 using the cutter member 34, the sides of the tape dispenser 10 are squeezed so as at least to move the flexible portion of the first side member 30 towards the second side member 32 and cause the braking effect. The squeezing action is generally effected by squeezing the tape dispenser 10 between the thumb and fingers of the hand.
[0057] When a desired length of tape has been unreeled from the roll of adhesive tape 12, it is then lowered over the cutter member 34, and the tape is cut - typically by a combination of lowering the loose end of the tape, while in tension, below the cutter member 34 and imparting a relative twisting motion between the cutter member 34 and the length of adhesive tape 12 to be cut off.
[0058] To that end, the cutter member 34 assembly typically includes a reinforcing or stiffening rib 50, shown in Figure 2, together with the cutter member blade 52, which is shown in Figure 4. Typically, the cutter member blade 52 is formed integrally with one of the first and second side members - in this case, it is formed integrally with side member 32, and is formed so as to overlie the reinforcing rib 50.
[0059] Typically, the first and second side members 30 and 32 respectively of the tape dispenser 10 are formed of a molded plastics material such as a styrene-based plastics material, or possibly a polycarbonate.
[0060] Moreover, the tape dispenser 10 may be formed such that the first and second side members 30, 32 may be disassembled one from the other so as to replace a hub 14 from which the adhesive tape 12 has been unreeled, with another hub 14 on which a new supply of adhesive tape 12 has been spirally wound.
[0061 ] Obviously, a tape dispenser 10 in keeping with the present invention maybe designed so as to have a plurality of brake spokes 44 formed on the inner surface of each of the first maj or side portions 36 of each of the first and second side members 30, 32. However, it has been discovered that a quite satisfactory braking effect can be imparted to the hub 14 by the particular embodiment which is illustrated, having the brake spokes 44 molded only on one of the side members.
[0062] The question of stiffness and flexibility of the side members is one which may be important, particularly in certain commercial embodiments of the tape dispenser of the present invention. Stiffness of the first major side portion 36 of the at least first side member 30 which has the brake spokes 44 formed thereon can be imparted by the presence of a plurality of arcuate ribs S4 which are also formed on the inside surface of the first major side portion 36 of that first side member 30. Here, the arcuate ribs 54 are spaced radially away from the first cylindrical axle portion 40, and are interposed among the plurality of brake spokes 44.
[0063] Moreover, so as to provide flexibility of the first major side portion 36 of the at least first side member 30, at least one channel 56 or 58 may be formed through the thickness of the material of the first major side portion 36 of the first side member 30, each in the region of and extending from each of the arcuate side ribs S4. This is seen particularly in Figure 3.
[0064] Indeed, typically there are the two channels S6, S8 which are formed through the thickness of the material of the first major side portion 36 of the first side member 30, for each of the arcuate ribs 54. One of the channels 56, 58 extends from one end of the respective arcuate rib 54, and the other channel extends from the other end of the arcuate rib 54, as seen particularly in Figures 1 and 2.
- . . . v .- . . - ~ YI r.. V
[0065] Typically, when a tape dispenser 10 is assembled, in keeping with the present invention, the first cylindrical axle portion 40 is fitted inside the second cylindrical axle portion 42, as can be seen in Figure 3.
[0066] It will also be noted that the configuration of the brake spokes 44 may be such, as seen particularly in Figures 2 and 3, that a stepped configuration 68 is employed at the end of the brake spokes 44 in the region thereof which faces the inner cylindrical wall 16 of the hub 14. This assumes contact between the brake spokes 44 and each of the cylindrical walls 16, 18 of the hub 14 when a braking action is to be imparted to the hub 14.
[0067] Moreover, the plurality of brake spokes 44 and the plurality of axcuate ribs 54 may each be configured so as to contact the outer cylindrical wall 18 of the hub 14, in such a manner as shown in Figure 3, so as to maintain the hub 14 centered over the assembled axle portions 40, 42.
This is because the inside diameter of the inner cylindrical wall 16 is greater than the outside diameter of the second cylindrical axle portion 42. However, so as to preclude binding ox uneven withdrawal or unreeling of the adhesive tape 12 away from the roll, it is best for the hub 14 to be centered over the assembled axle poxtions 40, 42 but not in binding contact therewith.
[0068] It has been found that three brake spokes 44, and three axcuate ribs 54, formed on the inside surface of the first major side portion 36 of the first side member 30, will provide very satisfactory performance of the tape dispenser 10 as described herein.
However, that description and illustration of three brake spokes 44 and three arcuate ribs 54 is not intended to be limiting, but is by way of example only. Any number of brake spokes and arcuate ribs may be employed - but typically, at least three and, for practical purposes, less than seven.
[0069] Now, directing our attention to discussion of the cutter member 34, it will be seen from each of Figures 1, 2, and 4, that the second minor side portions 38 of each of the first and second side members 30, 32 may be flared upwardly and outwardly, as shown at 60, in the region of the cutter member 34. It will be seen particularly from Figure 1 that the cutter member 34, and specifically the cutter blade 52 thereof, is placed high in the region of the flared second minor side portions 38 of each of the first and second side members 30, 32, and that there is a serrated outer cutting edge 62 provided for the cutter member 34 on the cutting blade 52.
[0070] In keeping with a particular provision of the present invention, the width of the cutting edge 62 exceeds the width of the adhesive tape 12 by at least 25%.
That additional width, together with the flared portion 60, permits easy access of the adhesive tape 12 to the cutter member 34 as the adhesive tape 12 is lowered over the cutter member 34 for cutting.
It will be recalled that, typically, the adhesive tape 12 is in tension at the time, due to the braking action on the hub 14.
[0071 ] ~ Another purpose which is served, of course, by the flared portions 60 is to reduce the possibility of injury- cutting the finger of the user, in particular- from the wide cutter member 34.
[0072] It has been found that a particularly effective cutting action can be obtained if the cutting edge 62 is aligned at a small angle to each of the flared second minor side portions 60, as seen in Figure 4. This slightly angled cutting edge 62 more easily accommodates starting the cutting action when the tape has been lowered onto the cutter member 34 and a relative twisting motion is effected between the adhesive tape and the cutter member.
[0073] Another aspect of the present invention provides for the cutter member assembly 34 to be arranged with any tape dispenser, such as a tape dispenser of the prior art. Howevex, it is a provision of the present invention that, even when the cutter member is provided with a prior art tape dispenser, it is mounted in an upper region of the end of the tape dispenser which is remote from the region of the hub of the roll of tape is mounted. Moreover, the side members of the tape dispenser should be flared upwardly and outwardly in the region of the cutter member, which has a serrated outer cutting edge, the width of which exceeds the width of the adhesive tape by at least 25%.
[0074] Again, typically the cutting edge is aligned at an angle to each of the upwardly and outwardly flared side members of the tape dispenser.
[0075] It will be evident that, in some circumstances, the assembly of the brake mechanism of the present invention, including particularly the first cylindrical axle portion 40, and the brake spokes 44, can be formed as a separate component which is not an integral portion of the side member, but is suspended or mounted therein in a suitable fashion.
[0076] Referring now to Figure 5, a tape dispenser 1 I O in keeping with the present invention is shown in a disassembled or exploded view. A roll of adhesive tape 12 will be placed into the tape dispenser 110, for dispensing therefrom. The roll of adhesive tape 12 is mounted on a hub which is shown generally at 14; it will be understood that the hub 14 comprises at least an outer cylindrical wall 18 onto which the adhesive tape 12 has been spirally wound. Further details of a typical hub 14 are described hereafter. Also, it will be understood that the adhesive tape 12 is at least as wide as the hub 14.
[0077] The tape dispenser comprises a first side member 30, a second side member 32, and a cutter member 34.
[0078] Each of the first and second side members 30 and 32 has a first major side portion 36a and 36b, respectively, which overlies a roll of adhesive tape 12 within the tape dispenser 110.
There is also a second minor side portion 38a and 38b, respectively of each of the first and second side members 30 and 32, at an end thereof which is xemote from the respective first major side portions 36a and 36b.
[0079] As can be seen in Figure 5, the cutter member 34 is mounted between the second minor side portions 38a and 38b of the first and second side member 30 and 32.
[0080] Each of the first and second side members 30 and 32 has a respective cylindrical axle portion formed centrally on the inside surface of the first major side portion 36a or 36b thereof.
Thus, there is a first cylindrical axle portion 40 which is formed centrally on the inside surface of the first major side portion 36a of the first side member 30; and there is a second cylindrical axle portion 42 which is formed centrally on the inside surface of the first major side portion 36a of the second side member 32.
[0081 ] It will be understood that the outer diametex of one of the first and second cylindrical axle portions is Less than the inner diameter of the second one of the first and second cylindrical axle portions, so that one cylindrical axle portion may be telescopically received within the second cylindrical axle portion.
[0082] In this case, the outer diameter of the cylindrical axle portion 40 is less than the inner diameter of the second cylindrical axle portion 42. Thus, as can be determined from an inspection of Figures 7 to 10, the first cylindrical axle portion 40 is telescopically received in the second cylindrical axle portion 42.
[0083] Also, the first and second cylindrical axle portions 40, 42 will be understood to have a common cylindrical axis 41.
~. 4 [0084] Clearly, the outer diameter of the second cylindrical axle portion 42 is less that the inner diameter of the tape hub shown generally at I4, so that the tape hub can be slidably and rotatably received on the second, outer, cylindrical axle portion 42.
[0085] As will be described in greater detail hereafter, at least the first side major portion (36a or 36b) of at least one of the first and second side members (30 or 32) is formed of a flexible plastics material. Thus, when the flexible first major side portion is pressed in a direction which is parallel to the common cylindrical axis 41 of the telescopically joined first and second axle portions 40, 42, the first cylindrical axle portion 40 extends further into the second cylindrical axle portion 42 until there is an interference between the sides of the tape hub 14 together with the adhesive tape 12 spirally wound thereon, and at least portions of the inner surfaces of the first major side portions 36a, 36b of the first and second side members 30, 32. This effect is clearly shown by inspection of Figures 8 and 10, in particular, and as described hereafter.
[0086] Turning to Figures 7 to 10, and referring first to Figures 7 and 8, further details of the assembly of the tape dispenser 110 in keeping with the present invention will be understood. It is seen that the first and second side members 30 and 32 are assembled together, so that they meet along line 33 except in the upper region of the respective second minor side portions 38a and 38b.
Typically, as seen in Figure 5, the cutter member 34 and its associated structure is integrally formed together with the second side member 32, which is typically formed of a more rigid plastics material that the material of the first side member 30.
[0087) Typically as can be seen in anyFigures 7 to 10, the hub 14 on which the adhesive tape 12 has been spirally wound, comprises an inner cylindrical wall 16, and outer cylindrical wall 18, and a centrally located radially extending wall 20 which is placed between the inner and outer cylindrical walls 16 and 18. Thus, it is seen that the hub 14 will generally have a wide "I" cross-section, with an annular void 22 which is formed between the inner and outer cylindrical walls 16 and 18 at each side of the radially extending wall 20. It will be appreciated from Figure 5, in particular, that the first side member 30 and the first cylindrical axle portion 40 may be integrally formed together of a flexible plastics material. Moreover, the second side member 32, the second cylindrical axle portion 42, and the cutter member 34, are also integrally formed together, usually of a more rigid plastics material.
[0088] However, it will also be understood that at least the first major side poz-tion 36a of at least the first side member 30 may be formed of a flexible plastics material, with the remainder of the first side member 30 being formed of a more rigid plastics material. In that case, the flexible plastics material of the first major side portions 36a is secured to the more rigid plastics material of the remainder of the side member 30, at the periphery of the first major side portion 36a.
[0089] Thus far, it will be understood that pressing against the at least one flexible major side portion 36a of the first side member 30 will thereby cause the first cylindrical axle portion 40 to move telescopically within the second cylindrical axle portion 42. As seen in Figures 7 to 10, that means that the first cylindrical axle portion 40 moves to the right, so as to move further within the second cylindrical axle portion 42. Comparison of Figures 7 and 8 with Figures 9 and 10, respectively, clearly shows that action. It will also be seen by comparison of Figures 7 and 8 with Figures 9 and 10 that an interferance between the sides of the tab hub 14 and the adhesive tape 12 which is spirally wound thereon, and at least portions of the inner surfaces of the first major side portions 36a and 36b, occurs.
[0090] There is a portion 35 which is formed on the inner surface of the second side member 32, and there maybe a plurality of spokes 44 which are also upstanding from the inner surface ofthe first major side portion 36b of the second side member 32, as seen particularly in Figure 5. Also, it is seen that there is a clearance 57 between the hub 14 and the adhesive tape 12, relative to the first side member 30. This is seen in Figure 8. There may also be a clearance 59 at the side of the hub 14 relative to the upset portion 35 of the second side member 32. Nonetheless, as will be seen particularly by a comparison of Figures 8 and 10, the clearance 57 disappears when the first major side portion 36a of the first side member 30 is flexed inwardly along axis 41, as shown in Figure 10, so that interference as shown at 61 in Figure 10 occurs between the hub 14 andlor the tape 12; and interference at 63 between the hub 14 and at least the upset portion 35 of the second side member 32 is assured. It is that interference 63 which determines the extent at which the flexible first major side portion 36a of the first side member 30 may be flexed.
[0091 ] Obviously, when the interference occurs as at 61 and 63, a braking effect on the hub 14 and or adhesive tape 12 is achieved, thereby precluding further unreeling of the adhesive tape 12 from the hub 14. Accordingly, a specific length of tape can be dispensed, without concern of there being overrun as fihe adhesive tape 12 is unreeled from the hub 14. This, in turn, assures a clean cut of the tape 12 at the cutter member 34, as it is drawn down and across the cutter member 34 in well known fashion.
[0092] It will be seen particularly in Figures 5 and 7 to 10, that there is a pair of wing-like projections 70 which are formed near the outer end 72 of the first cylindrical axle portion 40.
Obviously, the end 72 is remote from the first side member 30, or at least the first major side portion 36a thereof.
[0093] In any event, the pair of wing-like projections 70 is formed at diametrically opposed sides of the first cylindrical axle portion 40, so as to extend radially outwardly therefrom. As noted, the location of the pair of wing-like projections 70 is remote from the outer end 72 of the first cylindrical axle portion 40.
[0094] Moreover, the second cylindrical axle portion 42 has an inner end 74 where it extends from the second side member 32, and there is a pair of notches 76 which is formed in the second cylindrical axle portion 42 at diametrically opposed sides thereof. As seen particularly in Figures 7 to 10, the width and length of the pair of notches 76 are such as to receive a respective one of the pair of wing-like projections 70.
[0095] The length of each of the pairs of notches 76 is sufficient to receive the wing-like projections 70 therein, when the first and second side members 30 and 32 are assembled together, as seen particularly in Figures 7 and 8. Typically, the wing-like projections 70 interfere with the ends of the notches 76, and thus they preclude disassembly of the first and second side members 30 and 32 one from the other. Also, as is seen by comparison of Figures 7 and 8 with Figures 9 and 10, respectively, the wing-like projections 70 move within the notches 76 in a direction towards the second side member 32 when the flexible first side member 30 - at least the flexible first maj or side portion 36a thereof - is flexed and moved in a direction towards the second side member 32.
[0096] Moreover, the material of the first cylindrical axle portion 40 may be flexible, so that when the outer end 72 thereof is squeezed in a manner so that the wing-like proj ections 70 move diametrically towards each other and are disassociated from the notches 76 formed in the second cylindrical axle portion 42, then the tape dispenser 110 may be disassembled so as to replace a hub 14 from which adhesive tape 12 has been unreeled with another hub 14 on which adhesive tape 12 has been spirally wound. Therefore, the tape dispenser 1 I O of the present invention is reusable with additional rolls of adhesive tape.
[0097] However, more commonly, slits 80 are formed axially along the first cylindrical axle portion 40 at each side of each of the wing-like proj ections 70. The slits 80 extend from the outer end 72 of the first cylindrical axle portion 40 towards the first major side portion 36a of the first side member 30, to a length beyond the wing-like proj ections 70. Thus, when the outer end 72 of the first cylindrical axle portion 40 is squeezed in such a manner that the wing-like projections 70 move diametrically towards each other and are disassociated from the notches 76 of the second cylindrical axle portion 42, than the tape dispenser 110 may be disassembled in the same marn~er as discussed above.
[0098] Referring briefly to the cutter member 34, it is noted that in general the cutter member 34 is formed integrally with the second side member 32. Also, each of the second minor portions 38a and 38b of the respective first and second side members 30 and 32 may be flared upwardly and outwardly as indicated at 60a and 60b in Figure 5. Thus, the cutter member 34 is wider than the adhesive tape 12. This assists in placing the adhesive tape 12 across the cutter member 34 when a length of the adhesive tape is to be dispensed; and especially because of the braking action of the tape dispenser I 10 of the present invention against the roll of adhesive tape 12, an accurate cut of a specific length of adhesive tape 12 may be made.
[0099] As seen in Figure 5, the cutter member 34 has a serrated outex cutting edge 62 which is placed high in the region of the flared second minor side portions 60a and 60b. Such serrated outer cutting edges are known; it will be noted that the serrated outer cutting edge of the cutting member 34 is formed integrally therewith, and is not an additional metal cutter that is added to the tape dispenser 110.
[00100] Typically, the width of the edge of the cutting member 34 exceeds the width of the adhesive tape 12 by at least 25%.
[00101] There has been described a tape dispenser which functions particularly to preclude unwanted unreeling of the adhesive tape from a roll thereof particularly as the adhesive tape is to be cut. Several alternative embodiments of the tape dispenser are suggested, including particularly where the first maj or side portion 30 may be formed of a flexible material, or where the first major side portion 36a of the first side member 30 is formed of a flexible plastics material. Of course, either side member 30 or 32, or both side members 30 and 32, may be formed of flexible material.
[00102] Throughout this specification and the claims which follow, unless the context requires otherwise, the word "comprises" or "comprising", will be understood to imply the inclusion of a stated integer or step of integers or steps of integers but not to the exclusion of any other integer or step or group of integer steps.
[00103] Other modifications and alterations may be used in the design and manufacture of the apparatus of the present invention without departing from the spirit and scope of the accompanying claims.
[0036] Figure 3 is a cross-section taken in the direction of arrows III-III in Figure 2;
[0037] Figure 4 is a fragmentary top view of the portion IV indicated in Figure 1;
[0038] Figure 5 is an exploded view of a second embodiment of a tape dispenser in keeping with the present invention;
[0039] Figure 6 is a side elevation view of a second embodiment of a tape dispenser in keeping with the present invention;
[0040] Figure 7 is a cross-section, taken in the direction of arrows A-A in Figure 6, when the sides of the tape dispenser are in an unstressed condition;
[0041] Figure 8 shows details of Figure 7, to a larger scale;
[0042] Figure 9 is similar to Figure 7, but with one side of the tape dispenser being shown in a flexed condition; and [0043] Figure 10 is similar to Figure 8, but showing details of Figure 9.
[0044] Turning first to Figures 1 to 3, some general features of a tape dispenser 10 in keeping with the present invention are now discussed.
[0045] A tape dispenser 10 is shown in assembled form at 10 in Figure 1, having a roll of adhesive tape 12 placed within the dispenser 10, and being in a condition such that adhesive tape can be unreeled from the roll 12. In well known fashion, the adhesive tape is spirally wound on the roll 12, and is unreeled therefrom when the tape is pulled from the roll in an essentially tangential direction and the roll is rotated clockwise as seen in Figure 1.
[0046] In any event, as seen in Figure 3, the rolled adhesive tape 12 is mounted on a hub I4, onto which it is spirally wound. The hub 14 comprises an inner cylindrical wall 16 and an outer cylindrical wall 18. A centrally located radially extending wall 20 is located between the inner and outer cylindrical walls 16, 18, and thus the cross-section of the hub 14 is such as to have a wide "I"
cross-section as seen particularly in Figure 3. An annular void 22 is formed between the inner and outer cylindrical walls 16,18 at each side of the radially extending wall 20, again as seen particularly in Figure 3.
[0047] The tape dispenser 10 comprises two side members; a first side member 30 -which is shown in more detail in Figure 2, discussed hereafter - and a second side member 32. A cutter member 34 is shown generally in Figure 1, and is discussed in greater detail hereafter with respect to Figure 4.
[0048] Each of the first and second side members 30, 32 has a first major side portion 36 which overlies the roll of adhesive tape 12 within the tape dispenser 10, and a minor side portion 38 which is at an end of the tape dispenser 10 that is remote from the first major side portion 36. These first and second major and minor side portions, 36, 38, respectively, are seen particularly in Figures 1 and 2. It can also be seen particularly in Figures 1 and 4 that the cutter member 34 is mounted between the second minor side portions 38 of the first and second side members 30, 32.
[0049] As seen particularly in Figures 2 and 3, at least one of the first side member 30 and the second side member 32 has a first cylindrical axle portion 40 (shown, in this case, on the first side member 30) which is fornled centrally on the inside surface of the first major side portion 36, and is upstanding therefrom - particularly as noted in Figures 2 and 3.
[0050] The other side member may also have a second cylindrical axle portion 42 which is formed centrally on the inside surface of its first major side portion 36; and if so, the second cylindrical axle portion 42 is also upstanding from the inside surface of the first maj or side portion 36 thereof, as seen in Figure 3. It will also be seen from Figure 3 that the first and second cylindrical axle portions 40, 42 are dimensioned so as to fit one inside the other when the first and second side members 30, 32 are assembled together. As noted, when there is only a single axle portion 40, it may be upstanding from , and formed integrally with, either of the first or second side members.
[0051 ] Again, referring particularly to Figures 2 and 3, it will be seen that there is at least one brake spoke 44 which is upstanding from the inside surface of the first major side portion 36 of at least the first side member 30. Typically, there is a plurality of brake spokes 44.
[0052] As can be seen particularly in Figure 2, the brake spokes 44 axe arranged so as to be radially extending away from the first cylindrical axle portion 40, and they are spaced radially away from the first cylindrical axle portion 40.
[0053] In keeping with a particular provision of a preferred embodiment of the present invention, at least the first side member 30 is flexible in the region of the first major side portion 36.
Thus, the first major side portion 36 of the first side member 30 is capable of flexing inwardly, in a direction towards the second side member 32. Having regard to Figure 3, the first major side portion 3d of the first side member 30 is capable of being flexed in a direction to the left, towards the second side member 32.
[0054] It will also be seen from Figure 3 that, when the at least first side member 32 is flexed in its first major side portion 36, towards the second side member 32, the brake spokes 44 will extend into the annular void 22 on that side of the hub 14 which faces the brake spokes 44, and thus which faces the first side member 30. It follows, therefore, that frictional engagement will occur between the plurality of brake spokes 44 and at least one of the inner and outer cylindrical walls 16, 18 of the hub 14.
[0055] Thus, a braking effect is imparted to the hub 14, which in turn precludes further unreeling of the spirally wound adhesive tape 12 from the hub 14.
[0056] t~ccordingly, as the adhesive tape is unreeled from the roll of adhesive tape 12 wound on the hub 14, generally by having first lifted it away from the cutter member 34 and pulling it away from the roll of adhesive tape 12, then when it is desired to stop further unreeling of the adhesive tape 12 and to cut the then selected length of adhesive tape 12 using the cutter member 34, the sides of the tape dispenser 10 are squeezed so as at least to move the flexible portion of the first side member 30 towards the second side member 32 and cause the braking effect. The squeezing action is generally effected by squeezing the tape dispenser 10 between the thumb and fingers of the hand.
[0057] When a desired length of tape has been unreeled from the roll of adhesive tape 12, it is then lowered over the cutter member 34, and the tape is cut - typically by a combination of lowering the loose end of the tape, while in tension, below the cutter member 34 and imparting a relative twisting motion between the cutter member 34 and the length of adhesive tape 12 to be cut off.
[0058] To that end, the cutter member 34 assembly typically includes a reinforcing or stiffening rib 50, shown in Figure 2, together with the cutter member blade 52, which is shown in Figure 4. Typically, the cutter member blade 52 is formed integrally with one of the first and second side members - in this case, it is formed integrally with side member 32, and is formed so as to overlie the reinforcing rib 50.
[0059] Typically, the first and second side members 30 and 32 respectively of the tape dispenser 10 are formed of a molded plastics material such as a styrene-based plastics material, or possibly a polycarbonate.
[0060] Moreover, the tape dispenser 10 may be formed such that the first and second side members 30, 32 may be disassembled one from the other so as to replace a hub 14 from which the adhesive tape 12 has been unreeled, with another hub 14 on which a new supply of adhesive tape 12 has been spirally wound.
[0061 ] Obviously, a tape dispenser 10 in keeping with the present invention maybe designed so as to have a plurality of brake spokes 44 formed on the inner surface of each of the first maj or side portions 36 of each of the first and second side members 30, 32. However, it has been discovered that a quite satisfactory braking effect can be imparted to the hub 14 by the particular embodiment which is illustrated, having the brake spokes 44 molded only on one of the side members.
[0062] The question of stiffness and flexibility of the side members is one which may be important, particularly in certain commercial embodiments of the tape dispenser of the present invention. Stiffness of the first major side portion 36 of the at least first side member 30 which has the brake spokes 44 formed thereon can be imparted by the presence of a plurality of arcuate ribs S4 which are also formed on the inside surface of the first major side portion 36 of that first side member 30. Here, the arcuate ribs 54 are spaced radially away from the first cylindrical axle portion 40, and are interposed among the plurality of brake spokes 44.
[0063] Moreover, so as to provide flexibility of the first major side portion 36 of the at least first side member 30, at least one channel 56 or 58 may be formed through the thickness of the material of the first major side portion 36 of the first side member 30, each in the region of and extending from each of the arcuate side ribs S4. This is seen particularly in Figure 3.
[0064] Indeed, typically there are the two channels S6, S8 which are formed through the thickness of the material of the first major side portion 36 of the first side member 30, for each of the arcuate ribs 54. One of the channels 56, 58 extends from one end of the respective arcuate rib 54, and the other channel extends from the other end of the arcuate rib 54, as seen particularly in Figures 1 and 2.
- . . . v .- . . - ~ YI r.. V
[0065] Typically, when a tape dispenser 10 is assembled, in keeping with the present invention, the first cylindrical axle portion 40 is fitted inside the second cylindrical axle portion 42, as can be seen in Figure 3.
[0066] It will also be noted that the configuration of the brake spokes 44 may be such, as seen particularly in Figures 2 and 3, that a stepped configuration 68 is employed at the end of the brake spokes 44 in the region thereof which faces the inner cylindrical wall 16 of the hub 14. This assumes contact between the brake spokes 44 and each of the cylindrical walls 16, 18 of the hub 14 when a braking action is to be imparted to the hub 14.
[0067] Moreover, the plurality of brake spokes 44 and the plurality of axcuate ribs 54 may each be configured so as to contact the outer cylindrical wall 18 of the hub 14, in such a manner as shown in Figure 3, so as to maintain the hub 14 centered over the assembled axle portions 40, 42.
This is because the inside diameter of the inner cylindrical wall 16 is greater than the outside diameter of the second cylindrical axle portion 42. However, so as to preclude binding ox uneven withdrawal or unreeling of the adhesive tape 12 away from the roll, it is best for the hub 14 to be centered over the assembled axle poxtions 40, 42 but not in binding contact therewith.
[0068] It has been found that three brake spokes 44, and three axcuate ribs 54, formed on the inside surface of the first major side portion 36 of the first side member 30, will provide very satisfactory performance of the tape dispenser 10 as described herein.
However, that description and illustration of three brake spokes 44 and three arcuate ribs 54 is not intended to be limiting, but is by way of example only. Any number of brake spokes and arcuate ribs may be employed - but typically, at least three and, for practical purposes, less than seven.
[0069] Now, directing our attention to discussion of the cutter member 34, it will be seen from each of Figures 1, 2, and 4, that the second minor side portions 38 of each of the first and second side members 30, 32 may be flared upwardly and outwardly, as shown at 60, in the region of the cutter member 34. It will be seen particularly from Figure 1 that the cutter member 34, and specifically the cutter blade 52 thereof, is placed high in the region of the flared second minor side portions 38 of each of the first and second side members 30, 32, and that there is a serrated outer cutting edge 62 provided for the cutter member 34 on the cutting blade 52.
[0070] In keeping with a particular provision of the present invention, the width of the cutting edge 62 exceeds the width of the adhesive tape 12 by at least 25%.
That additional width, together with the flared portion 60, permits easy access of the adhesive tape 12 to the cutter member 34 as the adhesive tape 12 is lowered over the cutter member 34 for cutting.
It will be recalled that, typically, the adhesive tape 12 is in tension at the time, due to the braking action on the hub 14.
[0071 ] ~ Another purpose which is served, of course, by the flared portions 60 is to reduce the possibility of injury- cutting the finger of the user, in particular- from the wide cutter member 34.
[0072] It has been found that a particularly effective cutting action can be obtained if the cutting edge 62 is aligned at a small angle to each of the flared second minor side portions 60, as seen in Figure 4. This slightly angled cutting edge 62 more easily accommodates starting the cutting action when the tape has been lowered onto the cutter member 34 and a relative twisting motion is effected between the adhesive tape and the cutter member.
[0073] Another aspect of the present invention provides for the cutter member assembly 34 to be arranged with any tape dispenser, such as a tape dispenser of the prior art. Howevex, it is a provision of the present invention that, even when the cutter member is provided with a prior art tape dispenser, it is mounted in an upper region of the end of the tape dispenser which is remote from the region of the hub of the roll of tape is mounted. Moreover, the side members of the tape dispenser should be flared upwardly and outwardly in the region of the cutter member, which has a serrated outer cutting edge, the width of which exceeds the width of the adhesive tape by at least 25%.
[0074] Again, typically the cutting edge is aligned at an angle to each of the upwardly and outwardly flared side members of the tape dispenser.
[0075] It will be evident that, in some circumstances, the assembly of the brake mechanism of the present invention, including particularly the first cylindrical axle portion 40, and the brake spokes 44, can be formed as a separate component which is not an integral portion of the side member, but is suspended or mounted therein in a suitable fashion.
[0076] Referring now to Figure 5, a tape dispenser 1 I O in keeping with the present invention is shown in a disassembled or exploded view. A roll of adhesive tape 12 will be placed into the tape dispenser 110, for dispensing therefrom. The roll of adhesive tape 12 is mounted on a hub which is shown generally at 14; it will be understood that the hub 14 comprises at least an outer cylindrical wall 18 onto which the adhesive tape 12 has been spirally wound. Further details of a typical hub 14 are described hereafter. Also, it will be understood that the adhesive tape 12 is at least as wide as the hub 14.
[0077] The tape dispenser comprises a first side member 30, a second side member 32, and a cutter member 34.
[0078] Each of the first and second side members 30 and 32 has a first major side portion 36a and 36b, respectively, which overlies a roll of adhesive tape 12 within the tape dispenser 110.
There is also a second minor side portion 38a and 38b, respectively of each of the first and second side members 30 and 32, at an end thereof which is xemote from the respective first major side portions 36a and 36b.
[0079] As can be seen in Figure 5, the cutter member 34 is mounted between the second minor side portions 38a and 38b of the first and second side member 30 and 32.
[0080] Each of the first and second side members 30 and 32 has a respective cylindrical axle portion formed centrally on the inside surface of the first major side portion 36a or 36b thereof.
Thus, there is a first cylindrical axle portion 40 which is formed centrally on the inside surface of the first major side portion 36a of the first side member 30; and there is a second cylindrical axle portion 42 which is formed centrally on the inside surface of the first major side portion 36a of the second side member 32.
[0081 ] It will be understood that the outer diametex of one of the first and second cylindrical axle portions is Less than the inner diameter of the second one of the first and second cylindrical axle portions, so that one cylindrical axle portion may be telescopically received within the second cylindrical axle portion.
[0082] In this case, the outer diameter of the cylindrical axle portion 40 is less than the inner diameter of the second cylindrical axle portion 42. Thus, as can be determined from an inspection of Figures 7 to 10, the first cylindrical axle portion 40 is telescopically received in the second cylindrical axle portion 42.
[0083] Also, the first and second cylindrical axle portions 40, 42 will be understood to have a common cylindrical axis 41.
~. 4 [0084] Clearly, the outer diameter of the second cylindrical axle portion 42 is less that the inner diameter of the tape hub shown generally at I4, so that the tape hub can be slidably and rotatably received on the second, outer, cylindrical axle portion 42.
[0085] As will be described in greater detail hereafter, at least the first side major portion (36a or 36b) of at least one of the first and second side members (30 or 32) is formed of a flexible plastics material. Thus, when the flexible first major side portion is pressed in a direction which is parallel to the common cylindrical axis 41 of the telescopically joined first and second axle portions 40, 42, the first cylindrical axle portion 40 extends further into the second cylindrical axle portion 42 until there is an interference between the sides of the tape hub 14 together with the adhesive tape 12 spirally wound thereon, and at least portions of the inner surfaces of the first major side portions 36a, 36b of the first and second side members 30, 32. This effect is clearly shown by inspection of Figures 8 and 10, in particular, and as described hereafter.
[0086] Turning to Figures 7 to 10, and referring first to Figures 7 and 8, further details of the assembly of the tape dispenser 110 in keeping with the present invention will be understood. It is seen that the first and second side members 30 and 32 are assembled together, so that they meet along line 33 except in the upper region of the respective second minor side portions 38a and 38b.
Typically, as seen in Figure 5, the cutter member 34 and its associated structure is integrally formed together with the second side member 32, which is typically formed of a more rigid plastics material that the material of the first side member 30.
[0087) Typically as can be seen in anyFigures 7 to 10, the hub 14 on which the adhesive tape 12 has been spirally wound, comprises an inner cylindrical wall 16, and outer cylindrical wall 18, and a centrally located radially extending wall 20 which is placed between the inner and outer cylindrical walls 16 and 18. Thus, it is seen that the hub 14 will generally have a wide "I" cross-section, with an annular void 22 which is formed between the inner and outer cylindrical walls 16 and 18 at each side of the radially extending wall 20. It will be appreciated from Figure 5, in particular, that the first side member 30 and the first cylindrical axle portion 40 may be integrally formed together of a flexible plastics material. Moreover, the second side member 32, the second cylindrical axle portion 42, and the cutter member 34, are also integrally formed together, usually of a more rigid plastics material.
[0088] However, it will also be understood that at least the first major side poz-tion 36a of at least the first side member 30 may be formed of a flexible plastics material, with the remainder of the first side member 30 being formed of a more rigid plastics material. In that case, the flexible plastics material of the first major side portions 36a is secured to the more rigid plastics material of the remainder of the side member 30, at the periphery of the first major side portion 36a.
[0089] Thus far, it will be understood that pressing against the at least one flexible major side portion 36a of the first side member 30 will thereby cause the first cylindrical axle portion 40 to move telescopically within the second cylindrical axle portion 42. As seen in Figures 7 to 10, that means that the first cylindrical axle portion 40 moves to the right, so as to move further within the second cylindrical axle portion 42. Comparison of Figures 7 and 8 with Figures 9 and 10, respectively, clearly shows that action. It will also be seen by comparison of Figures 7 and 8 with Figures 9 and 10 that an interferance between the sides of the tab hub 14 and the adhesive tape 12 which is spirally wound thereon, and at least portions of the inner surfaces of the first major side portions 36a and 36b, occurs.
[0090] There is a portion 35 which is formed on the inner surface of the second side member 32, and there maybe a plurality of spokes 44 which are also upstanding from the inner surface ofthe first major side portion 36b of the second side member 32, as seen particularly in Figure 5. Also, it is seen that there is a clearance 57 between the hub 14 and the adhesive tape 12, relative to the first side member 30. This is seen in Figure 8. There may also be a clearance 59 at the side of the hub 14 relative to the upset portion 35 of the second side member 32. Nonetheless, as will be seen particularly by a comparison of Figures 8 and 10, the clearance 57 disappears when the first major side portion 36a of the first side member 30 is flexed inwardly along axis 41, as shown in Figure 10, so that interference as shown at 61 in Figure 10 occurs between the hub 14 andlor the tape 12; and interference at 63 between the hub 14 and at least the upset portion 35 of the second side member 32 is assured. It is that interference 63 which determines the extent at which the flexible first major side portion 36a of the first side member 30 may be flexed.
[0091 ] Obviously, when the interference occurs as at 61 and 63, a braking effect on the hub 14 and or adhesive tape 12 is achieved, thereby precluding further unreeling of the adhesive tape 12 from the hub 14. Accordingly, a specific length of tape can be dispensed, without concern of there being overrun as fihe adhesive tape 12 is unreeled from the hub 14. This, in turn, assures a clean cut of the tape 12 at the cutter member 34, as it is drawn down and across the cutter member 34 in well known fashion.
[0092] It will be seen particularly in Figures 5 and 7 to 10, that there is a pair of wing-like projections 70 which are formed near the outer end 72 of the first cylindrical axle portion 40.
Obviously, the end 72 is remote from the first side member 30, or at least the first major side portion 36a thereof.
[0093] In any event, the pair of wing-like projections 70 is formed at diametrically opposed sides of the first cylindrical axle portion 40, so as to extend radially outwardly therefrom. As noted, the location of the pair of wing-like projections 70 is remote from the outer end 72 of the first cylindrical axle portion 40.
[0094] Moreover, the second cylindrical axle portion 42 has an inner end 74 where it extends from the second side member 32, and there is a pair of notches 76 which is formed in the second cylindrical axle portion 42 at diametrically opposed sides thereof. As seen particularly in Figures 7 to 10, the width and length of the pair of notches 76 are such as to receive a respective one of the pair of wing-like projections 70.
[0095] The length of each of the pairs of notches 76 is sufficient to receive the wing-like projections 70 therein, when the first and second side members 30 and 32 are assembled together, as seen particularly in Figures 7 and 8. Typically, the wing-like projections 70 interfere with the ends of the notches 76, and thus they preclude disassembly of the first and second side members 30 and 32 one from the other. Also, as is seen by comparison of Figures 7 and 8 with Figures 9 and 10, respectively, the wing-like projections 70 move within the notches 76 in a direction towards the second side member 32 when the flexible first side member 30 - at least the flexible first maj or side portion 36a thereof - is flexed and moved in a direction towards the second side member 32.
[0096] Moreover, the material of the first cylindrical axle portion 40 may be flexible, so that when the outer end 72 thereof is squeezed in a manner so that the wing-like proj ections 70 move diametrically towards each other and are disassociated from the notches 76 formed in the second cylindrical axle portion 42, then the tape dispenser 110 may be disassembled so as to replace a hub 14 from which adhesive tape 12 has been unreeled with another hub 14 on which adhesive tape 12 has been spirally wound. Therefore, the tape dispenser 1 I O of the present invention is reusable with additional rolls of adhesive tape.
[0097] However, more commonly, slits 80 are formed axially along the first cylindrical axle portion 40 at each side of each of the wing-like proj ections 70. The slits 80 extend from the outer end 72 of the first cylindrical axle portion 40 towards the first major side portion 36a of the first side member 30, to a length beyond the wing-like proj ections 70. Thus, when the outer end 72 of the first cylindrical axle portion 40 is squeezed in such a manner that the wing-like projections 70 move diametrically towards each other and are disassociated from the notches 76 of the second cylindrical axle portion 42, than the tape dispenser 110 may be disassembled in the same marn~er as discussed above.
[0098] Referring briefly to the cutter member 34, it is noted that in general the cutter member 34 is formed integrally with the second side member 32. Also, each of the second minor portions 38a and 38b of the respective first and second side members 30 and 32 may be flared upwardly and outwardly as indicated at 60a and 60b in Figure 5. Thus, the cutter member 34 is wider than the adhesive tape 12. This assists in placing the adhesive tape 12 across the cutter member 34 when a length of the adhesive tape is to be dispensed; and especially because of the braking action of the tape dispenser I 10 of the present invention against the roll of adhesive tape 12, an accurate cut of a specific length of adhesive tape 12 may be made.
[0099] As seen in Figure 5, the cutter member 34 has a serrated outex cutting edge 62 which is placed high in the region of the flared second minor side portions 60a and 60b. Such serrated outer cutting edges are known; it will be noted that the serrated outer cutting edge of the cutting member 34 is formed integrally therewith, and is not an additional metal cutter that is added to the tape dispenser 110.
[00100] Typically, the width of the edge of the cutting member 34 exceeds the width of the adhesive tape 12 by at least 25%.
[00101] There has been described a tape dispenser which functions particularly to preclude unwanted unreeling of the adhesive tape from a roll thereof particularly as the adhesive tape is to be cut. Several alternative embodiments of the tape dispenser are suggested, including particularly where the first maj or side portion 30 may be formed of a flexible material, or where the first major side portion 36a of the first side member 30 is formed of a flexible plastics material. Of course, either side member 30 or 32, or both side members 30 and 32, may be formed of flexible material.
[00102] Throughout this specification and the claims which follow, unless the context requires otherwise, the word "comprises" or "comprising", will be understood to imply the inclusion of a stated integer or step of integers or steps of integers but not to the exclusion of any other integer or step or group of integer steps.
[00103] Other modifications and alterations may be used in the design and manufacture of the apparatus of the present invention without departing from the spirit and scope of the accompanying claims.
Claims (10)
1. A tape dispenser (10,110) for dispensing rolled adhesive tape (12) mounted on a hub (14), where the hub comprises at least an outer cylindrical wall (18) onto which the adhesive tape is spirally wound, and where the adhesive tape is at least as wide as the hub;
said tape dispenser comprising:
a first side member (30);
a second side member (32); and a cutter member (34);
wherein each of said first and second side members has a first major side portion (36) which overlies a roll of adhesive tape within said tape dispenser, and a second minor side portion (38) at an end thereof remote from said first major side portion;
wherein said cutter member is mounted between said second minor side portions of said first and second side members;
said tape dispenser being characterized in that:
at least one of said first and second side members has at least a first cylindrical axle portion (40) formed centrally on the inside surface of said first major side portion thereof, and wherein said at least first cylindrical axle portion has a cylindrical axis (41); and wherein at least said first major side portion of at least one of said first and second side members is formed of a flexible plastics material so that, when said flexible first major side portion is pressed using finger pressure in a direction parallel to said cylindrical axis of said at least first cylindrical axle portion, the sides of said tape hub interfere with at least portions of the inner surfaces of said first major side portions of said first and second side members, such that a braking effect is imparted to said hub to preclude unreeling of the spirally wound adhesive tape from said hub.
said tape dispenser comprising:
a first side member (30);
a second side member (32); and a cutter member (34);
wherein each of said first and second side members has a first major side portion (36) which overlies a roll of adhesive tape within said tape dispenser, and a second minor side portion (38) at an end thereof remote from said first major side portion;
wherein said cutter member is mounted between said second minor side portions of said first and second side members;
said tape dispenser being characterized in that:
at least one of said first and second side members has at least a first cylindrical axle portion (40) formed centrally on the inside surface of said first major side portion thereof, and wherein said at least first cylindrical axle portion has a cylindrical axis (41); and wherein at least said first major side portion of at least one of said first and second side members is formed of a flexible plastics material so that, when said flexible first major side portion is pressed using finger pressure in a direction parallel to said cylindrical axis of said at least first cylindrical axle portion, the sides of said tape hub interfere with at least portions of the inner surfaces of said first major side portions of said first and second side members, such that a braking effect is imparted to said hub to preclude unreeling of the spirally wound adhesive tape from said hub.
2. The tape dispenser of claim 1, wherein said hub further includes an inner cylindrical wall (16), an outer cylindrical wall (18), and a centrally located radially extending wall (20) between said inner and outer cylindrical walls, so as to have wide "I" cross-section, and an annular void (22) formed between said inner and outer cylindrical walls at each side of said radially extending wall, and wherein said adhesive tape is spirally wound on said hub.
3. The tape dispenser of claim 2, wherein said first side member has said first cylindrical axle portion formed centrally on the inside surface of said first major side portion thereof, and upstanding therefrom;
wherein said second side member has a second cylindrical axle portion formed centrally on the inside surface of said first major side portion thereof, and upstanding therefrom;
said first and second cylindrical axle portions being dimensioned so as to fit one inside the other when said first and second side members are assembled together, said joined first and second cylindrical axle portions having a common cylindrical axis.
wherein said second side member has a second cylindrical axle portion formed centrally on the inside surface of said first major side portion thereof, and upstanding therefrom;
said first and second cylindrical axle portions being dimensioned so as to fit one inside the other when said first and second side members are assembled together, said joined first and second cylindrical axle portions having a common cylindrical axis.
4. The tape dispenser of claim 3, wherein at least said first side member has at least one brake spoke (44) upstanding from the inside surface of said first major portion thereof, said at least one brake spoke being arranged so as to be radially extending away from said first cylindrical axle portion and spaced away therefrom; and wherein when said at least first side member is flexed towards said second side member, said at least one brake spoke extends into said annular void on the side of said hub which faces said first side member so as to cause frictional engagement between said at least one brake spoke and at least one of said inner and outer cylindrical walls of said hub.
5. The tape dispenser of claim 4, wherein there is a plurality of brake spokes upstanding from the inside surface of said first major side portion of said at least first side member;
wherein said tape dispenser further includes a plurality of arcuate ribs (54) formed on the inside surface of said first major side portion of said first side member, said arcuate ribs being spaced away from said first cylindrical axle portion, and interposed among said plurality of brake spokes;
wherein said tape dispenser further includes at least one channel (*) which is formed through the thickness of the material of said first major side portion of said first side member, in the region of and extending from each of said arcuate ribs; and wherein said plurality of brake spokes and said plurality of arcuate ribs are each configured so as to contact said outer cylindrical wall of said hub, so as to maintain said hub centered over said axle portions.
wherein said tape dispenser further includes a plurality of arcuate ribs (54) formed on the inside surface of said first major side portion of said first side member, said arcuate ribs being spaced away from said first cylindrical axle portion, and interposed among said plurality of brake spokes;
wherein said tape dispenser further includes at least one channel (*) which is formed through the thickness of the material of said first major side portion of said first side member, in the region of and extending from each of said arcuate ribs; and wherein said plurality of brake spokes and said plurality of arcuate ribs are each configured so as to contact said outer cylindrical wall of said hub, so as to maintain said hub centered over said axle portions.
6. The tape dispenser of claim 3, wherein said first cylindrical axle portion has an outer end (72) remote from said first side member, and a pair of wing-like projections (70) formed at diametrically opposed sides thereof so as to extend radially outwardly therefrom at a location remote from said outer end thereof; and said second cylindrical axle portion has an inner end (74) at said second side member, and has a pair of notches (76) formed at diametrically opposed sides thereof so as to receive a respective one of said pair of wing-like projections of said first cylindrical axle portion;
wherein the width and length of each of said notches is sufficient to receive said wing-like projections therein when said first and second side members are assembled together;
whereby said wing-like projections interfere with the ends of said notches to preclude disassembly of said first and second side members one from the other, and said wing-like projections move in said notches in a direction towards said second side member when said flexible first side member is flexed.
wherein the width and length of each of said notches is sufficient to receive said wing-like projections therein when said first and second side members are assembled together;
whereby said wing-like projections interfere with the ends of said notches to preclude disassembly of said first and second side members one from the other, and said wing-like projections move in said notches in a direction towards said second side member when said flexible first side member is flexed.
7. The tape dispenser of claim 6, wherein said first cylindrical axle portion is flexible, so that when said outer end is squeezed in a manner so that said wing-like projections move diametrically towards each other and are disassociated from said notches of said second cylindrical axle portion, said tape dispenser may be disassembled so as to replace a hub from which adhesive tape has been unreeled with another hub having adhesive tape spirally wound thereon.
8. The tape dispenser of claim 6, wherein slits (80) axe formed axially along said first cylindrical axle portion at each side of each said wing-like projection, and wherein said slits extend from said outer end of said first cylindrical axle portion towards said first major side portion of said first side member to a length beyond said wing-like projection, so that when said outer end is squeezed in a manner so that said wing-like projections move diametrically towards each other and are disassociated from said notches of said second cylindrical axle portion, said tape dispenser may be disassembled so as to replace a hub from which adhesive tape has been unreeled with another hub having adhesive tape spirally wound thereon.
9. The tape dispenser of claim 1, wherein said first and second side members are formed of molded plastics material.
10. The tape dispenser of claim 1, wherein said cutter member is formed integrally with one of said first and second side members, wherein each of said second minor side portions of said first and second side members is flared upwardly and outwardly in the region of said cutter member, wherein said cutter member has a serrated outer cutting edge (62) which is placed high in the region of said flared second minor side portions, wherein the width of said cutting edge exceeds the width of said adhesive tape by at least 25%, and wherein said cutting edge is aligned at an angle to each of said flared second minor side portions.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/741,854 US6612474B2 (en) | 2000-12-22 | 2000-12-22 | Hand-held tape dispenser with brake mechanism |
| US09/741,854 | 2000-12-22 | ||
| US09/883,306 US7175062B2 (en) | 2001-06-19 | 2001-06-19 | Hand-held tape dispenser having brake and flexible side |
| US09/883,306 | 2001-06-19 | ||
| PCT/IB2001/002823 WO2002051734A2 (en) | 2000-12-22 | 2001-12-20 | Hand-held tape dispenser with integrated brake mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2432933A1 CA2432933A1 (en) | 2002-07-04 |
| CA2432933C true CA2432933C (en) | 2009-12-29 |
Family
ID=27113934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002432933A Expired - Lifetime CA2432933C (en) | 2000-12-22 | 2001-12-20 | Hand-held tape dispenser with integrated brake mechanism |
Country Status (2)
| Country | Link |
|---|---|
| CA (1) | CA2432933C (en) |
| WO (1) | WO2002051734A2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7066367B2 (en) | 2002-09-30 | 2006-06-27 | Conros Corporation | Convertible cutter for tape dispensers |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3902956A (en) * | 1973-12-06 | 1975-09-02 | Minnesota Mining & Mfg | Pressure-sensitive tape applicating system |
| US4729518A (en) * | 1986-08-27 | 1988-03-08 | Minnesota Mining And Manufacturing Company | Tape dispenser including a backcard with projecting hub parking portions |
| US5171397A (en) * | 1990-02-02 | 1992-12-15 | Arnold John B | Self-cutting tape dispenser |
| DE9211693U1 (en) * | 1992-08-31 | 1992-12-24 | Reinecke, Ralf, 2000 Hamburg | Device for dispensing adhesive tape pieces from a reel |
-
2001
- 2001-12-20 CA CA002432933A patent/CA2432933C/en not_active Expired - Lifetime
- 2001-12-20 WO PCT/IB2001/002823 patent/WO2002051734A2/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| WO2002051734A3 (en) | 2003-01-03 |
| WO2002051734A2 (en) | 2002-07-04 |
| CA2432933A1 (en) | 2002-07-04 |
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Legal Events
| Date | Code | Title | Description |
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| EEER | Examination request | ||
| MKEX | Expiry |
Effective date: 20211220 |