WO2001056030A2 - Procede et appareil de traitement de disques compacts - Google Patents

Procede et appareil de traitement de disques compacts Download PDF

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Publication number
WO2001056030A2
WO2001056030A2 PCT/GB2001/000337 GB0100337W WO0156030A2 WO 2001056030 A2 WO2001056030 A2 WO 2001056030A2 GB 0100337 W GB0100337 W GB 0100337W WO 0156030 A2 WO0156030 A2 WO 0156030A2
Authority
WO
WIPO (PCT)
Prior art keywords
disc
pressing
pressing elements
elements
pressing element
Prior art date
Application number
PCT/GB2001/000337
Other languages
English (en)
Other versions
WO2001056030A3 (fr
Inventor
Howard Ira Miller
Original Assignee
Howard Ira Miller
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
Priority claimed from GB0001797A external-priority patent/GB0001797D0/en
Application filed by Howard Ira Miller filed Critical Howard Ira Miller
Priority to JP2001555094A priority Critical patent/JP2003520657A/ja
Priority to AU30357/01A priority patent/AU778135B2/en
Priority to EP20010902499 priority patent/EP1261970A2/fr
Priority to CA 2398299 priority patent/CA2398299A1/fr
Publication of WO2001056030A2 publication Critical patent/WO2001056030A2/fr
Publication of WO2001056030A3 publication Critical patent/WO2001056030A3/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/04—Disintegrating plastics, e.g. by milling
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/50—Reconditioning of record carriers; Cleaning of record carriers ; Carrying-off electrostatic charges
    • G11B23/505—Reconditioning of record carriers; Cleaning of record carriers ; Carrying-off electrostatic charges of disk carriers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/04—Disintegrating plastics, e.g. by milling
    • B29B2017/0424—Specific disintegrating techniques; devices therefor
    • B29B2017/0448—Cutting discs
    • B29B2017/0452—Cutting discs the discs containing abrasives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/04—Disintegrating plastics, e.g. by milling
    • B29B2017/0424—Specific disintegrating techniques; devices therefor
    • B29B2017/0484—Grinding tools, roller mills or disc mills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2017/00—Carriers for sound or information
    • B29L2017/001—Carriers of records containing fine grooves or impressions, e.g. disc records for needle playback, cylinder records
    • B29L2017/003—Records or discs
    • B29L2017/005—CD''s, DVD''s
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling

Definitions

  • the present invention relates to a method and apparatus for destroying or damaging compact discs and the like so that they are rendered unplayable.
  • Compact discs are most widely known for their use in the music and entertainment fields and in electronic publishing and are increasingly being used as a convenient data storage medium for business and government use.
  • the discs carry digitally encoded information on one surface thereof which can be read by a laser in a CD-player or disc-drive.
  • the invention resides in a method for rendering unplayable a compact disc, comprising placing the disc between first and second pressing elements, bringing said first and second pressing elements together so that the disc is trapped therebetween and is pressed against one or more disc spoiling elements adapted to damage the face of the disc on which the information bearing surface is provided.
  • the invention resides in an apparatus for rendering a compact disc unplayable comprising first and second pressing elements and at least one spoiling element interposed between the pressing elements, the pressing elements being adapted to be brought together to press the spoiling element against a disc when placed therebetween thereby to damage the information bearing surface of the disc.
  • the action of pressing the pressing elements together may or may not result in the two elements coming into contact with each other. In some circumstances, for example, the pressing elements will remain separated by virtue of the spoiling element(s) and/or disc interposed between the two.
  • the spoiling element or elements interposed between the first and second pressing elements may take a number of forms and preferably is/are associated with one of the pressing elements, for example, being integral with the pressing element(s) or. more preferably, retained on or by the pressing element(s).
  • the or each spoiling element may equally be separate from the or each pressing element but maintained in position to act on the disc such as by the gripping action of the pressing elements as they are pressed towards each other.
  • the spoiling element may comprise one or more electrically heated elements which, when heated to a desired temperature and pressed against the disc by the action of the first and second pressing elements, causes damage to the information bearing surface of the disc rendering it unplayable.
  • the heat may cause melting of the lacquer coating resulting in an uneven surface finish or discolouration sufficient to prevent the disc from being laser-read.
  • the apparatus according to the invention be manually operated without the need for an external or internal power source.
  • the spoiling element may comprise one or more upstanding blades which when pressed against the disc causes the disc to break into two or more separate pieces. While it is possible for each of the pressing elements to carry one or more blades so that the disc is "attacked * ' from both faces, it is also an option for only one of the pressing elements to carry blade(s).
  • blade it may be useful to position the blade in such a way that it dissects the disc into two unequal segments offset from its central hole, in this way the broken disc can be rotated about its hole and second and further cuts made as desired. If more than one blade is provided, these are preferably arranged parallel with each other.
  • the pressing element may be provided with one or more recesses corresponding to the position(s) of the opposing blades.
  • each blade or at least a projecting portion thereof can enter a complementary recess on the opposing pressing element as the disc snaps or breaks.
  • the disc may be accommodated in such a way as to rest above and/or below hollow interiors of either or both pressing elements.
  • one of the pressing elements may be provided with a disc locating ridge around an inner circumference of a perimeter wall.
  • the disc When located on the ridge, the disc encloses a hollow space which may contain one or more blades in addition to that or those carried on the other pressing element.
  • the disc locating ridge permits the disc to rest at a height such that any underlying blade is in contact with or lies just below the opposing face of the disc.
  • the blade or blades provided on the other pressing element that is, the pressing element which does not have the disc locating ridge
  • the blade or blades provided on the other pressing element project sufficiently so that at least one blade contacts and presses against the other face of the disc as the pressing elements are brought together.
  • the disc may be supported from below by a resilient material, such as by one or more pieces of foam rubber or plastic.
  • the depth of the resilient material is preferably selected such that during carrying out of the method or operation of the device the material is in a compressed state and by virtue of its resilience urges the disc towards the or each spoiling element.
  • the first and second pressing elements may be pivotally connected to each other, such as by means of one or more hinges or the like.
  • the or each blade is orientated parallel with the "pivot axis" of the pressing elements, that is the imaginary line that runs between the hinged edge of a pressing element and its opposite "free " ' edge.
  • a further benefit is achieved by such pivotal connection and blade arrangement, namely by virtue of the pressing elements being pressed together in an angular manner, the disc is initially gripped on one face at a point towards one edge thereof by a blade and the point force of the blade acting on the disc from that edge results in an applied torque on the disc.
  • the applied torque or leverage about a point is beneficial as promotes breakage of the disc.
  • the applied force to the disc may be further enhanced by means of a separate lever arm.
  • such a lever arm may be pivotally connected to an edge of one of the pressing elements at a position opposite the pivotal connection between the two pressing elements.
  • first and second pressing elements are brought together angularly, like closing a book, and the lever arm is then brought down over the free edge of the pressing element which is not pivotally attached to the lever arm.
  • the torque applied by the lever arm at the free edge of the pressing element is translated to the contact point between an upstanding blade and the disc.
  • the lever arm is provided with a projection at or close to its free or distal end. such projection at least initially contacting an outer face of the pressing element adjacent its free edge when carrying out the method of the invention or during operation of the device.
  • the spoiling element may comprise scraping means for abrading the information bearing surface of the disc.
  • scraping means and/or disc are permitted to move relative to each other at the same time as the two bear against each other. Such relative movement may be conveniently achieved by rotating the disc relative to the scraping means or vice versa. In this way, the information bearing surface of this disc becomes scratched or otherwise damaged by the action of the scraping means on it.
  • the scraping means may also comprise one or more projecting blades, ideally with a serrated edge to cause most damage.
  • there is no real advantage in providing recesses on the opposite pressing member because the intention is not to break the disc with the blade(s) and. in any event, the relative rotation between the blade(s) and the opposing pressing element means that the blade(s) and recesses would rarely be in alignment.
  • the scraping means may be in the form of an array of pins or other sharp protrusions projecting from one or both of the pressing elements and having sufficiently sharp free ends to score the information bearing surface as they are moved across the said surface.
  • the pins or projections may be provided in a regular or an irregular array, but preferably are so arranged as to cause damage across substantially the entire information bearing surface.
  • the scraping means simply comprises an abrasive material which for example is laid on or fixed to one or both pressing elements. Sand or grit paper may be used, both of which are easily replaceable on signs of wear, but harder-wearing materials are more suitable. Indeed plastics materials embedded with chips of hard plastics are known and are particularly suitable.
  • Another means suitable for damaging the information bearing surface of the disc by abrasion is by featuring a surface of the or each pressing element which is pressed against the disc, for example, to give a rough or knurled surface.
  • a surface is preferably of metal in order to maintain its abrasiveness throughout the lifespan of the device, although other such tough materials are also contemplated.
  • the abrasive material or the abrasive surface of the pressing element preferably extends over an area sufficient to cover the information bearing surface of the disc when the apparatus is used. It is also preferred that both pressing elements are provided with an abrasive material or an abrasive surface. In this way, it does not matter in which orientation the disc is placed on the apparatus.
  • first and second pressing elements should be provided with complementary features, each fulfilling a different role but in combination providing both the key and the preferred features of the invention.
  • the first pressing element may be provided with features for retaining the disc thereon
  • the second pressing element is provided with or carries the spoiling means.
  • it is not necessary to provide spoiling means on both pressing elements because only one face of the disc is required to be damaged and therefore the orientation of the disc on the device will be chosen accordingly.
  • the present invention does not preclude the provision of spoiling elements on both pressing elements. Indeed, this may become even more desirable in the future if both faces of the discs carry digitally recorded information.
  • the first pressing means comprises a planar base portion and a wall portion which together define a recess in which the disc may sit.
  • the inner circumference of the wall portion may be such that the disc fits snugly inside the recess so that any lateral movement of the disc is restricted.
  • the inner side of the wall may be provided with teeth, serrations or the like, to hold the disc stationary.
  • the first pressing means may comprise a spindle on which the disc can be retained in position through its centre hole.
  • the spindle may be similarly provided with teeth or serrations, preferably sharp enough to dig into the disc material around its central hole, to inhibit or prevent rotational movement of the disc.
  • rotational movement may for example be achieved simply by rotation of one or both of the pressing elements relative to the other, either while the disc itself is held firm on the spindle (for example when the scraping means is provided on only one of the pressing elements) or while the disc is simply captive between the pressing elements but not prevented from rotating (for example when the scraping means are provided on both pressing elements).
  • Rotational movement may alternatively be achieved by rotation of the spindle, if the disc is held in this way.
  • the spindle may extend through the pressing element to a position beyond its outer face thereby enabling an operator to grasp the end of the spindle and rotate it about its axis. More preferably, however, the spindle is attached to or integral with a handle, the spindle and handle being disposed on opposite faces of the pressing element.
  • the handle may be of any suitable shape or configuration, for example it may be cylindrical, and ideally has a diameter and depth to allow comfortable use by an operator.
  • a typical such handle is presented in the form of a "screw top " .
  • the external surface of the handle may be knurled or otherwise featured.
  • one of the pressing elements to comprise a rotatable central plate and a ring portion which surrounds and retains the plate but which remains stationary in use relative to the other pressing element.
  • the rotatable plate is preferably provided on one face with scraping means for spoiling the information bearing surface of a disc and on its opposite face with a handle, for example a crank handle, which may be manually grasped and twisted or reciprocated to cause rotation of the central plate.
  • the other or second pressing element is desirably provided with features complementary to those of the first pressing element.
  • the first pressing means includes a planar base portion and a wall portion defining a recess in which the disc sits
  • the second pressing means may also comprise a planar portion of a size which effectively covers the disc and of a depth which at least partially fits within the recess so that it also is substantially prevented from moving laterally. Such an arrangement does however permit to the first and second pressing elements to be rotated relative to each other.
  • the second pressing element may be provided with a recess to accommodate the portion of the spindle which projects through and beyond the disc.
  • a recess may extend across the full depth of the second pressing element to produce a hole therethrough. Any recess should however be designed such that it does not interfere with the action of the or each spoiling element.
  • the second pressing element is preferably of substantially the same outline shape as the first pressing element.
  • both pressing elements are substantially cylindrical, ideally in the form of plates, and preferably of slightly larger circumference than a compact disc.
  • the apparatus is likely to be operated whilst being held and supported only by the hands of the operator.
  • the apparatus may of course equally be used when supported on a surface, such as a desk or table.
  • the exterior face of at least one of the pressing elements is preferably substantially planar and smooth to avoid damaging the supporting surface during use. Possibly the exterior face may be provided with feet, ideally of the non-slip variety, or one or more suction pads, to prevent the apparatus from sliding around during use.
  • the apparatus is provided with a lever arm. as described above, this may equally be in the form of a plate rather than a strip, for example.
  • the second pressing element may define a similar recess into which the external wall portion of the first pressing element fits.
  • the second pressing element may be dimensioned so that it too is accommodated in the recess.
  • locking means may be provided on either or both pressing elements to prevent or hinder relative rotation or other movement therebetween.
  • Such locking means may simply take the form of a knurled or featured engaging surface on one or both interior or exterior side walls of the pressing elements to provide a friction fit.
  • other complementary locking means such as screw threads or clamping means may be provided on both pressing elements.
  • Such complementary locking means enable pressure on the disc by the intermediate spoiling element(s) to be exerted and maintained, yet relative movement between the pressing elements substantially prevented.
  • pressing elements are to be locked together such as by a friction fit. or by screw thread means, it is preferred that an exterior portion of one or both pressing elements be provided with means to facilitate their release or separation following use of the device.
  • release facilitating means may be in the form of finger recesses, featured surfaces, handles or the like, enabling an operator to gain a secure grip on one or both pressing elements while the elements are pulled apart or otherwise detached from each other.
  • each element is desirably provided with means by which an operator can firmly grasp one element or a portion thereof in one hand and press the elements together whilst at the same time initiating rotational movement.
  • means by which an operator can firmly grasp one element or a portion thereof in one hand and press the elements together whilst at the same time initiating rotational movement may provide the operator with comfortable means to achieve this.
  • the apparatus according to the invention may be made from any suitable material.
  • the pressing elements at least may be made of a tough plastics material, for example a polycarbonate, whereas for other embodiments, such as the hinged, blade version the use of steel may be more appropriate.
  • a tough plastics material for example a polycarbonate
  • blades are included to comprise the disc spoiling means, these are preferably metallic. Periodic replacement of the blades may be required to maintain the apparatus in optimum working condition.
  • the apparatus according to the invention is ideally one which is readily portable and can be used in the hands of an operator.
  • the apparatus according to the invention may be of relatively simple construction. In its simplest form, it requires only two pressing elements and a spoiling element. The pressing elements may be separate or may be joined to form a one-piece device.
  • the apparatus has further advantages in that it requires only a few. if any. moving parts and therefore there is little opportunity for malfunction. By means of the present invention therefore it is a simple matter to render unwanted or substandard compact discs unplayable.
  • Fig. 1 is a perspective view of apparatus in accordance with one aspect of the invention.
  • Fig. 2 is a perspective view of the apparatus of Fig. 1 modified in accordance with a further aspect of the invention
  • Fig. 3 is a perspective view of apparatus in accordance with another aspect of the invention.
  • Fig. 4 is a perspective view of the pressing element of the apparatus of Fig. 3;
  • Fig. 5 is a perspective view of the pressing element of Fig. 4 carrying an alternative spoiling element
  • Fig. 6 is a perspective view of apparatus in accordance with a yet further aspect of the invention.
  • Fig. 7 is a view from above of a first pressing element and from below of a second pressing element of the apparatus of Fig. 6;
  • Fig. 8 is a view of spoiling elements carried on the pressing elements of Fig. 7;
  • Fig. 10 is a perspective view of apparatus in accordance with another alternative embodiment of the invention showing pressing elements in open configuration
  • Fig. 1 1 is a view from below of the apparatus of claim 10 showing pressing elements in closed configuration
  • Fig. 12 is a view from one side of the apparatus of Figs. 10 and 11 ;
  • Fig. 13 is a view from above of the apparatus of Figs. 10 to 12.
  • a first device (10) for breaking a compact disc comprises first and second cylindrical pressing members (12. 14) pivotally linked by a hinge (16).
  • the lowermost pressing member (12) as illustrated has a disc supporting rim ( 18) around the inner circumference of perimeter wall (20) and a central stem (22) which together serve to position a disc (not shown) on the device.
  • the disc will be centred on the device by means of the stem (22) passing through its central hole and its outer edge will rest on the supporting rim (18).
  • Spoiling elements in the form of two blades (24. 26) are secured to the base (28) of the lowermost pressing member (12) and their uppermost, sharpened edges (30, 32) lie just below or in contact with the underside of the disc when the disc is resting on rim (18).
  • the uppermost pressing element (14) also carries spoiling elements in the form of two blades (34. 36) on its base (not visible).
  • Blades (34. 36) are offset from blades (24. 26) such that they do not touch each other when the pressing elements (14, 16) are closed together.
  • Blades (34. 36) do however depend from element (14) such that when the device is closed, that is when pressing elements (14, 16) are brought together so that they are substantially parallel, and without a disc positioned thereon, the tips of blades (34, 36) lie below the level of rim (18).
  • the device (40) of Fig. 2 has all the features of the device (10) of Fig. 1 with the addition of a lever arm (42) which is pivotally attached to the lowermost pressing element (12) by a hinge (44) opposite the other hinge (16).
  • Lever arm (42) is of substantially the same shape as uppermost pressing element (14), but instead of carrying one or more blades thereon, the underside is provided with projection (46).
  • a device is positioned on the lowermost pressing member (12) as described above, and uppermost pressing member (14) is lowered towards it. Once the uppermost pressing member reaches a position where the corner of blade (36) rests against the disc, lever arm (42) is lowered so that projection (46) bears against the outer face of pressing member (14).
  • lever arm (42) may be attached to lowermost pressing member (12) in such a manner that when the device is not in use, uppermost pressing member (14) lies flat against lowermost pressing member (12), and lever arm (42) lies flat against uppermost pressing member (14).
  • Device (60) comprises uppermost and lowermost pressing elements (62, 64).
  • the external perimeter wall (66) of uppermost pressing element (62) has a knurled finish and forms a friction fit with the internal perimeter wall (68) of lowermost pressing element (64).
  • spindle (70) Depending from the underside (69) in use of the uppermost pressing element (64) is spindle (70) having a tapered extremity (72) to facilitate insertion through the central hole of a compact disc (not shown).
  • the portion (74) of the spindle (70) adjacent the underside (69) is also tapered, widening as it gets closer to the underside (69). This portion (74) has sharp notches (76) which grip the perimeter of the disc around its central hole thus holding the disc firm on the spindle (70).
  • the spindle (70) passes through a central aperture (not shown) in the uppermost pressing element (62) and is connected to screw handle (78) which sits on the outer face of the pressing element (62).
  • the screw handle (78) can be turned by an operator to rotate the disc held on the spindle (70).
  • a disc is located and retained by spindle (70) and uppermost and lowermost pressing elements are pressed together. Due to the friction fit between the pressing elements (62. 64) relative rotation is prevented, but the disc can still be rotated by turning screw handle (78).
  • the lowermost pressing element (64) carries spoiling element(s) (not shown) against which the disc is scraped when rotated on the spindle (70).
  • Figs. 4 and 5 show alternative lowermost pressing elements (64a and 64b respectively).
  • lowermost pressing element (64a) is provided with spoiling elements in the form of a pair of serrated blades (80, 82) inserted and securely retained in slots (84. 86) integral with upstanding base (88).
  • Base (88) also has a central hole (90) through which a length of spindle (70) passes when uppermost and lowermost pressing elements (62, 64) are brought together.
  • the information bearing surface of a disc (not shown) retained on spindle (70) will be pressed against blades (80, 82) and screw handle (78) turned so that the information bearing surface of the disc is dragged across blades (80. 82) thereby damaging the surface and rendering the disc unplayable.
  • lowermost pressing element (64b) is provided with a spoiling element in the form of an abrasive sheet (92) which fits into the recess in element (64b).
  • Abrasive sheet (92) also has a central hole (94) corresponding to the central hole (90) of the pressing element (64b).
  • the abrasive sheet (92) may be attached to the base (88) of the pressing element such as by adhesive means. Instead of the information bearing surface of the disc being dragged across blades, as in Fig. 4. the surface is rubbed against the abrasive sheet to cause the damage and render the disc unplayable.
  • Figs. 6 to 8 illustrate apparatus in accordance with a yet further aspect of the invention.
  • the apparatus is a two-piece device (80) comprising uppermost and lowermost pressing elements (82, 84).
  • the external perimeter wall (86) of uppermost pressing element (82) fits within the internal perimeter wall (88) of lowermost pressing element (84) but is not a friction fit. Instead, there is sufficient "play" between them to allow the uppermost and lowermost pressing elements (82. 84) to be rotated with respect to each other.
  • the external perimeter wall (92) of the lowermost pressing element (84) has a plurality of concave indentations (94) against which an operator may press his fingers to grip the element (84).
  • the uppermost pressing element (82) has a handle (96) projecting therefrom also with concave indentations (98) for gripping purposes.
  • both the uppermost and lowermost pressing elements (82, 84) are provided with a spoiling element in the form of abrasive sheets (102. 104) affixed, such as by adhesive means, to the opposing faces in use of the elements (82, 84).
  • a disc (not shown) is laid on the abrasive sheet (104) of the lowermost pressing element (84) and the uppermost pressing element (82) is then laid over so that the external perimeter wall (86) sits within the internal perimeter wall (88) and effectively traps the disc therebetween.
  • the pressing elements (82, 84) are then manually pressed together and rotated in opposite directions using their respective indentations (96. 94) as gripping aids. As relative rotation occurs, both surfaces of the disc are scraped simultaneously by the abrasive sheets (102. 104). In this way, the information bearing surface of the disc is damaged whichever the orientation of the disc in relation to the pressing elements.
  • Fig. 9 illustrates another two- piece device (1 10) consisting of uppermost and lowermost pressing elements (112, 114).
  • the lowermost pressing element (114) has a pair of finger recesses (120. 120') opposite each other on the external perimeter wall (1 18). These finger recesses ( 120. 120') assist the operator in separating the pressing elements ( 112. 1 14) from each other after use.
  • abrasive sheets covering all or substantially all of the opposing faces in use of the pressing elements (112, 1 14).
  • discrete strips ( 122) of abrasive material are affixed on each of the opposing faces to provide the necessary spoiling means.
  • a disc (not shown) is located on the lowermost pressing element (114) and retained thereon through its central aperture by means of spindle (124).
  • spindle (124) is accommodated in a corresponding recess (126) provided in the uppermost pressing element (112).
  • Figs. 10 to 13 illustrate another embodiment of the invention, effectively representing a modification of the apparatus shown in Fig. 9.
  • the device (130) comprises uppermost and lowermost pressing elements (132, 134) attached to each other via hinge (136). Both elements (132, 134) are provided on their opposing faces with abrasive material forming the spoiling means. While an arrangement of abrasive strips (138) is shown, it is clear that a continuous sheet of abrasive material is equally suitable for the purpose of scouring a disc surface.
  • the two elements (132, 134) are clamped together using screw clamp (142) which is pivotally attached to the uppermost pressing element (132).
  • the screw clamp (142) is able to pivot to allow opening and closing of the hinged pressing elements (132, 134) and is ideally located opposite the hinge (136) for maximum effect.
  • the pressure applied to a disc by the pressing elements (132, 134) can be adjusted by screwing or unscrewing the clamp to tighten or loosen the grip as required.
  • the pressing elements are effectively locked together.
  • the uppermost pressing element (132) comprises a rotatable central plate (142) surrounded and retained by a ring (144) to which hinge (136) and screw clamp (142) are attached.
  • the rotatable plate (142) On its inner face in use, the rotatable plate (142) carries the abrasive strips (138) and on its outer face it carries a crank handle (146) which an operator may use to rotate the central plate (142).
  • the disc is retained in position by means of a spindle (148) projecting upwards from the lowermost pressing element (134) through the central aperture of the disc.
  • the spindle (148) is received in a corresponding recess (152) in the uppermost pressing element (132).
  • the blade or blades which comprise the spoiling element(s) for scraping against the information bearing surface of the disc may have non-linear scraping edges or may comprise a series of small blades arranged at varying angles, thus reducing the bending force on the blade tips with consequential benefits of increased lifespan for the blades.
  • the pressing elements may be so designed as to fit together or be locked together when the device is not in use.

Landscapes

  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Knives (AREA)

Abstract

L'invention concerne un appareil destiné à rendre un disque compact non lisible comprenant des premier et des second éléments de pressage et au moins un élément de destruction placés entre les éléments de pressage. Les éléments de pressage sont conçus de manière à les faire coïncider pour presser l'élément de destruction contre le disque placé entre ceux-ci, endommageant ainsi les informations se trouvant sur la surface support du disque. Dans un mode de réalisation préféré, le ou chaque élément de destruction comprend des grattoirs pouvant être dotés d'une lame dentée ou d'un matériau abrasif. La rotation du disque par rapport aux grattoirs lorsque le disque est placé entre les éléments de pressage résulte en ce la surface support du disque sur laquelle se trouvent les informations sont griffées ou autrement endommagées. L'invention concerne également un procédé destiné à rendre non lisible un disque compact.
PCT/GB2001/000337 2000-01-26 2001-01-26 Procede et appareil de traitement de disques compacts WO2001056030A2 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2001555094A JP2003520657A (ja) 2000-01-26 2001-01-26 コンパクトディスクを取り扱う方法と装置
AU30357/01A AU778135B2 (en) 2000-01-26 2001-01-26 Method and apparatus for treatment of compact discs
EP20010902499 EP1261970A2 (fr) 2000-01-26 2001-01-26 Procede et appareil de traitement de disques compacts
CA 2398299 CA2398299A1 (fr) 2000-01-26 2001-01-26 Procede et appareil de traitement de disques compacts

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
GB0001797A GB0001797D0 (en) 2000-01-26 2000-01-26 Method and apparatus for treatment of compact discs
GB0001797.0 2000-01-26
GB0022472.5 2000-09-13
GB0022472A GB2358596B (en) 2000-01-26 2000-09-13 Method and apparatus for treatment of compact discs
US10/199,883 US20040014404A1 (en) 2000-01-26 2002-07-19 Method and apparatus for treatment of compact discs

Publications (2)

Publication Number Publication Date
WO2001056030A2 true WO2001056030A2 (fr) 2001-08-02
WO2001056030A3 WO2001056030A3 (fr) 2002-03-14

Family

ID=32329538

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2001/000337 WO2001056030A2 (fr) 2000-01-26 2001-01-26 Procede et appareil de traitement de disques compacts

Country Status (4)

Country Link
EP (1) EP1261970A2 (fr)
JP (1) JP2003520657A (fr)
CA (1) CA2398299A1 (fr)
WO (1) WO2001056030A2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004044902A2 (fr) * 2002-11-14 2004-05-27 Lebe Botho W Dispositif pour rendre illisibles des supports d'enregistrement optiques
EP1486978A2 (fr) * 2003-06-11 2004-12-15 Taiwan Bor Ying Corporation Procédé et dispositif de destruction de signaux stockés sur un disque compact

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4556433A (en) * 1984-04-16 1985-12-03 Allsop, Inc. Apparatus and method for cleaning digital audio discs
US4654917A (en) * 1985-06-17 1987-04-07 Recoton Corporation Compact disc cleaner
US5102099A (en) * 1990-06-06 1992-04-07 Brown Kevin L Disc polisher apparatus
US5334254A (en) * 1992-10-21 1994-08-02 Paul J. Gelardi Non-abrasive disc cleaner
US5520865A (en) * 1993-01-26 1996-05-28 Sargent, Iii; George W. Method for defacing compact discs
WO1997028924A1 (fr) * 1996-02-12 1997-08-14 Georgeann Mc Fadden Dispositif de destruction de disque compact
US5963526A (en) * 1997-12-31 1999-10-05 Lee; Jean Chin Chu Radially reciprocating cleaning device for compact disc
US6000085A (en) * 1998-07-07 1999-12-14 Taiwan Bor Ying Corporation Compact disc cleaner
EP1036595A1 (fr) * 1999-03-17 2000-09-20 SCHLEICHER & Co. INTERNATIONAL AKTIENGESELLSCHAFT Dispositif de destruction de disques supports de données et système de récupération pour ceux-ci
US6189446B1 (en) * 1999-01-07 2001-02-20 William Olliges System for the secure destruction of compact disc data

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4556433A (en) * 1984-04-16 1985-12-03 Allsop, Inc. Apparatus and method for cleaning digital audio discs
US4654917A (en) * 1985-06-17 1987-04-07 Recoton Corporation Compact disc cleaner
US5102099A (en) * 1990-06-06 1992-04-07 Brown Kevin L Disc polisher apparatus
US5334254A (en) * 1992-10-21 1994-08-02 Paul J. Gelardi Non-abrasive disc cleaner
US5520865A (en) * 1993-01-26 1996-05-28 Sargent, Iii; George W. Method for defacing compact discs
WO1997028924A1 (fr) * 1996-02-12 1997-08-14 Georgeann Mc Fadden Dispositif de destruction de disque compact
US5963526A (en) * 1997-12-31 1999-10-05 Lee; Jean Chin Chu Radially reciprocating cleaning device for compact disc
US6000085A (en) * 1998-07-07 1999-12-14 Taiwan Bor Ying Corporation Compact disc cleaner
US6189446B1 (en) * 1999-01-07 2001-02-20 William Olliges System for the secure destruction of compact disc data
EP1036595A1 (fr) * 1999-03-17 2000-09-20 SCHLEICHER & Co. INTERNATIONAL AKTIENGESELLSCHAFT Dispositif de destruction de disques supports de données et système de récupération pour ceux-ci

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004044902A2 (fr) * 2002-11-14 2004-05-27 Lebe Botho W Dispositif pour rendre illisibles des supports d'enregistrement optiques
WO2004044902A3 (fr) * 2002-11-14 2004-07-29 Botho W Lebe Dispositif pour rendre illisibles des supports d'enregistrement optiques
CN100380512C (zh) * 2002-11-14 2008-04-09 伯托·W·莱贝 用于使光存储介质不可读取的装置
EP1486978A2 (fr) * 2003-06-11 2004-12-15 Taiwan Bor Ying Corporation Procédé et dispositif de destruction de signaux stockés sur un disque compact
EP1486978A3 (fr) * 2003-06-11 2006-04-05 Taiwan Bor Ying Corporation Procédé et dispositif de destruction de signaux stockés sur un disque compact

Also Published As

Publication number Publication date
EP1261970A2 (fr) 2002-12-04
JP2003520657A (ja) 2003-07-08
WO2001056030A3 (fr) 2002-03-14
CA2398299A1 (fr) 2001-08-02

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