GB2516106A - A cutting device - Google Patents

A cutting device Download PDF

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Publication number
GB2516106A
GB2516106A GB1312510.9A GB201312510A GB2516106A GB 2516106 A GB2516106 A GB 2516106A GB 201312510 A GB201312510 A GB 201312510A GB 2516106 A GB2516106 A GB 2516106A
Authority
GB
United Kingdom
Prior art keywords
cutting
housing
thc
cutting arm
blade
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.)
Withdrawn
Application number
GB1312510.9A
Other versions
GB201312510D0 (en
Inventor
Simon Anthony Lyons
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
VERSION 22 DESIGN Ltd
Original Assignee
VERSION 22 DESIGN Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by VERSION 22 DESIGN Ltd filed Critical VERSION 22 DESIGN Ltd
Priority to GB1312510.9A priority Critical patent/GB2516106A/en
Publication of GB201312510D0 publication Critical patent/GB201312510D0/en
Publication of GB2516106A publication Critical patent/GB2516106A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B27/00—Hand cutting tools not provided for in the preceding groups, e.g. finger rings for cutting string, devices for cutting by means of wires
    • B26B27/007—Hand cutting tools not provided for in the preceding groups, e.g. finger rings for cutting string, devices for cutting by means of wires with handles specifically adapted to be attached to a human hand or finger, e.g. thimbles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B1/00—Hand knives with adjustable blade; Pocket knives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B3/00—Hand knives with fixed blades
    • B26B3/08—Hand knives with fixed blades specially adapted for cutting cardboard, or wall, floor, or like covering materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B5/00—Hand knives with one or more detachable blades
    • B26B5/001—Hand knives with one or more detachable blades with blades being slid out of handle immediately prior to use
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B5/00—Hand knives with one or more detachable blades
    • B26B5/005—Hand knives with one or more detachable blades specially adapted for cutting cardboard, or wall, floor or like covering materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B69/00—Unpacking of articles or materials, not otherwise provided for
    • B65B69/0033—Unpacking of articles or materials, not otherwise provided for by cutting

Abstract

A cutting device 1 allows a user to make a cut, or series of cuts, in the surface of different types of packaging with ease. The device 1 comprises a cutting arm 2 mounted in a housing 4, the cutting arm 2 having a blade 14 which is used to make the cuts. The housing 4 further comprises a rigid base plate 16 and flexible sleeve 18, where the cutting arm 2 is attached to the base plate 16. Downward pressure of a finger or thumb inserted into the device 1 moves the cutting arm 2 from an at rest position, to an active position, projecting the blade 14 through an aperture 20 in the housing 4 and allowing a cut to be made. The blade 14 automatically retracts back into the housing 4 after a cut has been made, as the device 1 is lifted away from the packagings surface.

Description

A CUTTING DEVICE
FIELD OF THE INVENTION
The invention relates to a device for cutting everyday packaging and materials, and in particular to a device which allows the cutting element of the device to be retracted rhen not in use.
BACKGROUND TO THE INVENTION
There are many types of packaging that present difficulties with opening, especially to thosc who have arthritis or poor hand strength. It is also not only users with poor hand strength who have problems in opening certain types of packaging. An average consumer may experience difficulties in opening the packaging of everyday products, e.g. packets of rice or freeze dried coffee, which have been sealed comprehensively by a manufacturer to retain freshness and avoid spoiling of the product. An alternative option is to simply cut the packaging opcn, which often mcans resorting to the use of sharp scissors or knives which have their own inherent dangers.
It would be advantageous to have a device that allows a user to open a variety of types of packaging with ease. It would further be advantageous if that device were lightweight, portable and compact so that it could be easily stored. It would be particularly advantageous if the device could be operated by using a single finger, or thumb, such that relatively little strength was required. FinaHy, it would be highly advantageous if the cutting means of the device could retract after use, to prevent accidents.
Such a device would also be highly beneficial to people working in an industry which requires them to make frequent cuts as part of a daily routine. For example, workers in a warehouse or distribution centre who are involved in the opening and wrapping of parcels. The device could also be used to cut non-packaging materials such as tape, foil or paper.
SUVIMARY OF THE INVENTION
Accordingly, the present invention provides a cutting device comprising: a housing having an aperture; and a cutting arm within the housing, the cutting arm having a blade; the cutting arm being movable between a first position in which the blade is retracted and a second position in which the blade projects through the aperture; thc cutting arm having a first cnd attached to thc housing and a sccond end biased towards the first position when in the second position.
In this specification terms such as "up", "upper", "lower", "above", "under" and "below" are used with reference to the device, or component features of the device, when it is positioned on a horizontal surface in a stable configuration. The skilled person will appreciate that there is only a single orientation of the device when placed on a horizontal surface that satisfies this condition. That orientation is one where the basc plate, as will be seen in due course, makcs contact with a horizontal surface.
Although the device can be used in a number of orientations when a user has inserted the device onto their finger(s) or thumb, a reference to a lower surface of the base platc, for example, means a surface of thc base plate that would face downwards if the dcvicc wcre placcd on a horizontal surfacc.
In accordance with the invention, the device comprises a housing having an aperture extending between an inner and outer surface of the housing. A cutting arm with a blade attached to a surface of the cutting arm is mounted within the housing, such that the blade is positioned adjaceilt the aperture. The blade may be positiOlled elltirely or partially within the aperture, or it may simply be positioned to align with the aperture.
The skilled person will appreciate that the position of the blade relative to the aperture may vary, as long as the blade does not project through thc aperture to the exterior of the housing when the device is not in use. In a preferred embodiment, the blade and cutting arm are detachable from each other so that the blade may be replaced when it becomes blunt.
The cutting arm is movable between a first position in which the blade is retracted, i.e. does not project through the aperture to the exterior of the device, and a second position in which the blade projects or extends through the aperture. The cutting arm has a first end attached to the housing, and a second end biased towards the first position when in the second position. Preferably the cutting arm is formed from a resilient material, e.g. a metal, to bias its return to the first position when resiliently deformed into the sccond position. The blade, which may be a metal or ceramic blade, is also preferably located at the second end of the cutting arm. Preferably the blade is a single edged blade, although other types of blade are envisaged which may include, but not be limited to, a serrated edged blade.
In an embodiment of the invention, the housing preferably comprises a base plate and sleeve, and the cutting arm is preferably attached to the base plate. The skilled person will appreciate that the cutting arm and base plate may be integrally formed, although in a preferred embodiment of the invention the cutting arm and base plate may be detachable.
Preferably the housing defines a receptacle having a substantially open end and a substantially closed end. The housing is preferably configured to receive at least one finger or thumb at the open end.
The housing also preferably comprises a cut out section in a side wall of the sleeve, which extends between the open and closed ends. The cut out section allows the remainder of the sleeve to expand and contract, so that it is able to deform to the shape and dimension of a user's finger(s) or thumb. It also provides an access point so that the cutting arm may be removed from the housing, for cleaning purposes or so that it can be replaced with ease. Preferably, the second end of the cutting arm is adjacent the closed end of the housing. The housing may also comprise guide means on the upper exterior of the device, to indicate the position that the blade will project through the aperture on an underside of the device. The skilled person will appreciate that the guide means may include, but not be limited to, a notch cut out of the housing or a guide line etched onto the outer surface of the housing.
In an embodiment where the cutting arm and base plate are detachable, it is envisaged that the cutting arm and base plate comprise rotary connection means around an axis perpendicular to a surface of the cutting arm at the first end. This permits the cutting arm to be rotated with respect to the base plate, and subsequently separated from each other. It is anticipated that the cutting arm will comprise a clip part which may be mated with a complementary formed receiving structure, e.g. a recess or aperture, in the base plate. The clip part can be inserted into the recess, and the cutting arm rotated with respect to the base plate so that the two parts are secured together.
Alternatively, it is equally anticipated that the base plate will comprise a clip part which may be mated with a complementary formed receiving structure, e.g. a recess or aperture, in the cuffing arm.
It will be appreciated that when the cutting arm is mounted on the base plate, there will be a gap between the second end of the cutting arm and the base plate. This will allow the cutting arm to be moved from the first position to the second position, in order for the blade to be projected through the aperture. It will also be appreciated that the gap between the cutting arm and the base plate permits the second end of the cutting arm to bias towards the first position, in order to retract the blade back into the housing after use.
In alternative embodiments of the invention, the cutting arm and base plate may comprise other connection means known in the art, which may include, but not be limited to, a sliding lock or snap-fit connection means. Regardless of the detachable connection means, it is important to note that the cutting arm and base plate remain fixed together in use, but can easily be separated or released so that different cutting arms can be used with the same base plate.
In other alternative embodiments of the invention, the skilled person will appreciate that the cutting arm and base plate may simply be ultrasonically welded or glued together, or may be integrally forriied.
The sleeve is preferably formed from a flexible material, e.g. a resiliently deformable material such as rubber or woven elastic, to provide comfort to a user and also to adapt to a user's finger(s) and/or thumb when in use. In an alternative embodiment, the slccvc may be formed from a rigid plastic having built in weak points to allow it to be resiliently deformable. It is anticipated that the sleeve may be overmoulded, bonded to, or may be integrally formed with the base plate.
The device may be operated as follows. A user inserts a finger or thumb into the sleeve of the device so that a surface of the finger or thumb is positioned against the cutting arm, and the tip of the finger or thumb is positioned at the second end of the cutting arm. The device can then be brought into contact with, for example, the packaging that it is intended to cut, by aligning a lower surface of the base plate/housing with the packaging. Downward pressure of the finger or thumb against the surface on which it is positioned causes the second end of the cuffing arm to move from the first position to the second position, thereby to project the blade through the apcrture in the housing.
At the same time, the device can be drawn across the surface of the packaging so that the blade is used to make a cut in the packaging. After making the required cut, the device can be lifted from the surface of the packaging. The downward pressure exerted by the finger or thumb on the cutting arm dissipates as the device is removed from the surface of the packaging. The blade automatically retracts through the aperture into the housing as the cutting arm is biased back towards the first position.
A user can make more cuts as required by repeating the actions of contacting the device with a surface to be cut, applying pressure to the cuffing arm to move it from the first position to the second position, and drawing the exposed blade across the surface of the packaging to effect further cuts.
The invention as described above provides a safer and easier way to open a number of types of packaging, without having to use sharp knives or scissors. The device could also be used to cut non-packaging materials which may include, but not be limited to, tapes, foils or papers. In addition, relatively little strength is required to operate the device, and the blade automatically retracts after use to prevent accidents.
Spccific cmbodiments of the invention arc now dcscribcd by way of cxamplc and with reference to the accompanying drawings in which like numerals arc used to indicate like parts.
DRAWINGS
Figure Ia shows a perspective view of the cutting arm from above; Figures lb-Id show respectively, the cutting arm viewed from the side, the front and below; Figures le and 1 f show respectively, perspective views of the cutting arm from below viewed from the front and the rear; Figures 2a and 2b show respectively, perspective views of the housing viewed from the front and the rear; Figures 2c-2f show respectivcly, the housing vicwcd from above, bclow, the side and the front; Figures 3a-3d show respectively, the stages of assembling the cutting arm and housing; Figures 4a and 4b show respectivdy, perspective views of the assembled cutting device with the cutting arm in the first and second positions; Figures 4c and 4d show respectively, the assembled cutting device viewed from the side with the cutting arm in the first and second positions; Figure 5 shows a first altemative embodiment of the invention; Figures 6a-6d show respectively, perspective views of the stages of assembly of a second alternative embodiment of the invention; Figures 7a and 7b show respectively, perspective views of the stages of assembly of a third alternative embodiment of the invention; and Figures 7e and 7d show respectively, Figures 7a and 7b viewed from the side.
Referring now to the drawings, Figures Ia-If and 2a-2f show the component parts of the cutting device 1, as described in more detail below. The cutting device I comprises a cutting arm 2 and a housing 4.
The cutting arm 2, as illustrated by the various views shown in Figures la-IL is constructed from polypropylcnc. It comprises a strip of polypropylene which bends away from the horizontal at one end of the cutting arm 2. The planar end of the cutting arm 2 is referred to as the first end 6, and the curved end of the cutting arm 2 is referred to as the second end 8. A retaining clip 10, also made from polypropylene, is formed on an underside 12 of the cutting arm 2 at the first end 6. A blade 14 is mounted at the second end 8 on an underside 12 of the cutting arm 2. The blade 14, formed from stainless steel, is moulded into a polypropylene insert which is then attached to the cutting arm 2 by spot welding.
The housing 4, as illustrated by the various views shown in Figures 2a-2f, comprises a base plate 16 and a sleeve 18. The base plate 16 and sleeve 18 are moulded and bonded together with each other, such that the housing 4 defines a receptacle having a substantially open end and a substantially closed end.
The base plate 16 is constructed from polypropylene. It is a substantially planar piece at one end and bends away from the horizontal at the other end of the base plate 16.
An aperture 20 is located in the curved end of the base plate 16, extending through the base plate 16 from the interior to the exterior of the housing 4. The aperture 20 is configured to allow the blade 14 to extend into and project through the aperture 20 upon actuation of the cutting device 1. A second aperture 22 is located in the planar end of the base plate 16, also extending through the base plate 16 from the interior to the exterior of the housing 4. Figures 2c and 2d show that the second aperture 22 is shaped and dimensioned to receive the complementary formed retaining clip 10 on the cutting arm 2.
The sleeve is constructed from a thermoplastic oletin. A side wall section of the sleeve 18 is cut away from one side of the device 1, as can be seen clearly in Figure 2a, forming an opening 24. This allows the cutting arm 2 to be inserted into the housing 4 and mounted on the base plate 16.
Figures 3a-3d illustrate the respective stages involved in assembling the cutting arm 2 and housing 4 to form the cutting device 1. Figure 3a shows the first end 6 of the cutting arm 2 being inserted into the opening 24 in the side wall of the sleeve 18, such that the retaining clip 10 of the cutting arm 2 can be aligned with the aperture 22 in the base plate 16. Figure 3b shows that the retaining clip 10 of the cutting arm 2 is inserted into the aperture 22 in the base plate 16. Figure 3c shows that the cutting arm 2 is rotated with respect to the base plate 16, passing through the opening 24 in the side wall of the sleeve 18. This aligns the blade 14 of the cutting arm 2 adjacent the aperture 20 in the base plate 16 as can be seen in Figure 3d. The action of rotating the cutting arm 2 with respect to the base plate 16 permits the retaining clip 10 to be secured in the aperture 22.
Figure 3d also shows that there is a gap between the second end 8 of the cutting arm 2 and the base plate 16, when the cutting arm 2 is mounted within the housing 4. This allows the cutting arm 2 to be moved from the first position to the second position, in order for the blade 14 to be projected through the aperture 20. It will also be appreciated that the gap between the cutting arm 2 and the base plate 16 permits the second end 8 of the cutting arm 2 to bias towards the first position, in order to retract the blade 14 back into the housing 4 after use.
Figures 4a-4d illustrate the assembled device 1 when the cutting arm 2 is in the first (Figures 4a and 4c) and second (Figures 4b and 4d) positions. The first position defines an at rest' position, with the blade 14 retracted safely within the housing 4.
The second position shows the blade 14 of the cutting arm 2 projecting through the aperture 20 in the base plate 16.
Figure 5 illustrates an alternative embodiment of the invention, wherein the cutting arm 2 and housing 4 are integrally formed.
Figures 6a-6d illustrate an alternative embodiment of the invention, wherein the cutting arm 2 and housing 4 comprise a sliding lock connection means.
Finally, Figures 7a-7d illustrate an alternative embodiment of the invention, wherein the cutting arm 2 and housing 4 comprise snap-fit conncction means.
The assembled device 1 is operated as follows. A user inserts a finger or thumb into the sleeve 18 of the device 1 so that a surface of the finger or thumb is positioned against an upper surface of the cutting arm 2, and the tip of the finger or thumb is positioned at the second end 8 of the cutting arm 2. The device I is brought into contact with, for example, the surface of the packaging that is intended to be cut, by aligning a lower surface of the housing 4/base plate 16 with the packaging.
Downward pressure of the finger or thumb against the surface on which it is positioned causes the second end 8 of the cutting arm 2 to move from the first position to the second position, thereby to project the blade 14 through the aperture 20 of the housing 4.
At the same time, the device 1 is drawn across the surface of the packaging so that the blade 14 is used to make a cut in the packaging. After making the required cut, the device 1 is lifted from the surface of the packaging. The downward pressure exerted by the finger or thumb dissipates as the device I is removed from the surface of the packaging. The blade 14 automatically retracts back through the aperture 20 into the housing 4 as the cutting arm 2 is biased back towards the first position. A user can make more cuts as required by repeating the actions of contacting the device I with a surface to be cut, applying pressure to the cutting arm 2 to move it from the first position to the second position, and drawing the exposed blade 14 across the packaging. -10-

Claims (15)

  1. CLAIMS: 1. A cutting device comprising: a housing having an aperture; and a cutting arm within the housing, the cutting arm having a blade; the cutting arm being movable between a first position in which the blade is retracted and a second position in which the blade projects through the aperture; the cutting arm having a first end attached to the housing and a second end biased towards the first position when in the second position.
  2. 2. A cutting device according to claim 1, wherein the housing comprises a base plate and sleeve.
  3. 3. A cutting device according to claim 2, wherein the cutting arm is attached to the base plate.
  4. 4. A cutting device according to claim 3, wherein thc cutting arm and base plate are detachable.
  5. 5. A cutting device according to any of claim 2 to claim 4, wherein the cutting arm and base plate comprise rotary connection means around an axis perpendicular to a surface of the cutting arm at the first end.
  6. 6. A cutting device according to any of claim 2 to claim 3, wherein the cutting arm and base plate are integrally formed.
  7. 7. A cutting device according to any preceding claim, wherein the cutting arm is formed from a resilient material to bias its return to the first position when resiliently deformed into the second position.
  8. 8. A cutting device according to any of claim 2 to claim 7, wherein the sleeve is formed from a flexible material.
  9. 9. A cutting device according to any preceding claim, wherein the blade is located at the second end of the cutting arm.
  10. 10. A cutting device according to any preceding claim, wherein the housing defines a receptacle having a substantially open end and a substantially closed end.
  11. 11. A cutting dcvicc according to claim 10, whcrcin thc sccond cnd of thc cutting arm is adjaccnt thc closed cnd of thc housing.
  12. 12. A cutting device according to claim 10 or claim 11, wherein the housing is configured to rcccivc at cast onc finger or thumb at thc opcn end.
  13. 13. A cutting device according to any preceding claim, wherein the blade and cutting arm are detachable.
  14. 14. A mcthod of using a cutting dcvicc, thc mcthod comprising thc steps of: inserting at least one finger or thumb into a housing of the cutting device, the cutting device comprising a housing having an aperture; and a cutting arm within the housing, thc cutting arm having a blade; thc cutting arm bcing movable bctwccn a first position in which thc bladc is rctractcd and a sccond position in which thc bladc projects through the aperture; the cutting arm having a first end attached to the housing and a second end biased away from the housing when in the second position; contacting a surfacc to bc cut with thc cutting device; applying prcssurc from the at least onc finger or thumb to move thc cutting arm from the first position to the second position thereby to project the blade through thc apcrturc; drawing the blade from the cutting device over the surface to effect a cut; and rcmoving thc cutting dcvicc from thc surfacc in ordcr to rctract thc bladc into the aperture. -12-
  15. 15. A cutting device substantially as describcd herein and with reference to the drawhigs.
GB1312510.9A 2013-07-12 2013-07-12 A cutting device Withdrawn GB2516106A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1312510.9A GB2516106A (en) 2013-07-12 2013-07-12 A cutting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1312510.9A GB2516106A (en) 2013-07-12 2013-07-12 A cutting device

Publications (2)

Publication Number Publication Date
GB201312510D0 GB201312510D0 (en) 2013-08-28
GB2516106A true GB2516106A (en) 2015-01-14

Family

ID=49081191

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1312510.9A Withdrawn GB2516106A (en) 2013-07-12 2013-07-12 A cutting device

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11148311B2 (en) 2019-11-11 2021-10-19 Slice, Inc. Cutting device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2623490A1 (en) * 1976-05-26 1977-12-01 Beermann Kg Martor Argentax Trimmer knife for cutting cardboard, leather, carpets etc. - has pivoted replaceable blade which retracts into handle by spiral spring and catch lock
GB2426946A (en) * 2005-06-07 2006-12-13 Sebastian Fernandez Finger ring with retractable and removable blade
US20080222899A1 (en) * 2007-03-16 2008-09-18 Durham Lamoyne W Picture frame backing paper edge trimmer
US20110219630A1 (en) * 2010-03-10 2011-09-15 Sonoco Development, Inc. Cutting apparatus
US20120304471A1 (en) * 2011-06-01 2012-12-06 Ralph Jones Utilty Knife
US20130061478A1 (en) * 2011-09-08 2013-03-14 Joseph L. Lutgen Safety Cutter with Improved Blade Locking Mechanism

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2623490A1 (en) * 1976-05-26 1977-12-01 Beermann Kg Martor Argentax Trimmer knife for cutting cardboard, leather, carpets etc. - has pivoted replaceable blade which retracts into handle by spiral spring and catch lock
GB2426946A (en) * 2005-06-07 2006-12-13 Sebastian Fernandez Finger ring with retractable and removable blade
US20080222899A1 (en) * 2007-03-16 2008-09-18 Durham Lamoyne W Picture frame backing paper edge trimmer
US20110219630A1 (en) * 2010-03-10 2011-09-15 Sonoco Development, Inc. Cutting apparatus
US20120304471A1 (en) * 2011-06-01 2012-12-06 Ralph Jones Utilty Knife
US20130061478A1 (en) * 2011-09-08 2013-03-14 Joseph L. Lutgen Safety Cutter with Improved Blade Locking Mechanism

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11148311B2 (en) 2019-11-11 2021-10-19 Slice, Inc. Cutting device

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