WO1993020559A1 - Verrou destine a un mecanisme de disquette informatique - Google Patents
Verrou destine a un mecanisme de disquette informatique Download PDFInfo
- Publication number
- WO1993020559A1 WO1993020559A1 PCT/SE1993/000304 SE9300304W WO9320559A1 WO 1993020559 A1 WO1993020559 A1 WO 1993020559A1 SE 9300304 W SE9300304 W SE 9300304W WO 9320559 A1 WO9320559 A1 WO 9320559A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- lock
- disk drive
- disk
- parts
- computer
- Prior art date
Links
- 230000002441 reversible effect Effects 0.000 claims description 2
- 241000700605 Viruses Species 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000009877 rendering Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 229920000136 polysorbate Polymers 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
- G11B33/005—Means for locking the disc or cassette receiving slot, e.g. dummy cassettes locked in the slot
Definitions
- the present invention relates to a lock which is primarily intended to prevent the unauthorized use of computer disk drives, floppy disk units and the like.
- Another reason why unauthorized access to the disk drive, and therewith to the computer, shall be pre ⁇ vented is to prevent the use of virus-infected disks in the computer.
- game disks may become infected with viruses which will destroy the storage content of the computer, either immediately or in the space of time, or when the computer is connected to a computer network may destroy the storage content in other parts of the network.
- disk drive locks have been developed on the basic principle of inserting an object into the disk slot of the drive instead of a disk and then firmly securing the object in the slot.
- One problem with locks known hitherto is that they can be forced and/or broken apart and then removed from the disk drive, therewith enabling the computer to be booted and used without difficulty.
- Still another object of the invention is to provide a disk drive lock which can be used alternatively solely to lock or to block the disk drive and therewith prevent booting of the computer.
- the inventive disk drive lock which is characterized in that it comprises two sepa ⁇ rate lock parts which are intended to be inserted into a disk drive one after the other and to lie one upon the other in their inserted positions, wherein the combined thickness of the two lock parts corresponds essentially to the thickness of a relevant disk; in that the first lock part includes hooks which latch behind guide pins provided in the disk drive and functioning to position a disk in the drive; and in that each of the two lock parts include a limb which subsequent to insertion of the lock parts into the disk drive project out from said drive, wherein said limbs include means which enable the two lock parts to be mutually locked together.
- Figure 1 is a top view of a first part of the inven ⁇ tive disk drive lock
- Figure 2 is a side view of the lock part shown in Figure 1;
- Figure 3 is a top view of a second part of the inven ⁇ tive disk drive lock
- Figure 4 is a side view of the lock part shown in
- Figure 5 shows the two lock parts joined together but offset in relation to one another and posi- tioned for insertion into a disk drive
- Figure 6 is a side view of a second lock part for use in computers which have two disk drives, one above the other;
- Figure 7 is a side view of a second lock part for use with portable computers having a lid which covers the keyboard;
- Figure 8 is a top view of the lock part shown in
- Figure 9 illustrates a first lock part of another em ⁇ bodiment of the invention
- Figure 10 illustrates a reversible second lock part intended for coaction with the first lock part shown in Figure 9.
- the inventive disk drive lock is comprised of two parts which can be locked one to the other in a manner to effectively block the disk space in the disk drive. It is impossible to remove the two lock parts together from the disk space at mutually the same time, without deforming the disk positioning devices in the disk drive, i.e. guide pins and guide rails, and/or wrench ⁇ ing said devices from said drive, and therewith render the drive unusable.
- Figure l is a top view of a first lock part 10 and Figure 2 is a side view of said lock part.
- the lock part 10 has a main part 12 whose outer contours corre ⁇ spond essentially to the contours of a 3.5" disk, and includes a limb 14 which is intended to project out from the disk space when the lock is inserted therein.
- a recess is provided in the central region 16 of the lock part 10, so that the lock will not bring influ- ence to bear on the disk drive and the reading head in said drive.
- the lock part has two limbs 18, 20, each of which includes a latching hook as shown at 22 and 24 respec ⁇ tively, of which only one latching hook 22 is shown in Figure 2 .
- the limb 18 has a part 26 which lies in front of the hook 22 and which is adapted so that the distance be- tween the front edge 28 of the part 26 and an exten ⁇ sion 30 of the rear edge 32 of the main part 12 will correspond essentially to the length of a 3.5" disk.
- the distance "A" in Figure 2 between the front edge 28 of the part 26 and the rear edge of the hook 22 is 17 mm, i.e. corresponds to the distance between the front edge of a 3.5" disk and its guide holes intended for coaction with guide pins for fixing the position of the disk in a disk drive.
- the hook 24 on the other limb 20 lies on the same height level.
- the second limb 20 terminates at the latching hook 24 and is thus shorter than the first limb, the length of which corresponds to the length of a 3.5" disk. This is to prevent the computer sensing the lock to be a disk, since precisely this disk-sensing function normally lies within the area in front of the guide pin that is located on this side.
- the limb part 14 is provided with a first hole 34 and a second hole 36, which is smaller than the first hole.
- the function of the holes will be explained below.
- Figure 3 is a top view of the second lock part 40 and Figure 4 is a side view of said second lock part. It will be seen from Figure 4 that this lock part is flat and slightly thicker than the first part.
- the combined thickness of the two lock parts is 3.5 mm, i.e equal to the thickness of a 3.5" disk, and according to the preferred embodiment, the first lock part has a thickness of 1.5 mm and the second lock part 40 a thickness of 2.0 mm.
- the second lock part 40 is configured in the same way as"the first lock part 10, with a central recessed area or cut-out 42 which is surrounded by two limbs 44 and 46 and a main part 48.
- the lengths of the legs from the rear edge 50 of the main part and its exten ⁇ sion 52 correspond to the distance between the rear edge 32 of the first part 10 and the front edge of the latching hooks 22, 24. This is considered a suitable expedient in avoiding unnecessary contact with the ac ⁇ tive, damage-prone devices of the disk drive.
- the second lock part 40 also has a limb part 44 in which a hole 56 is provided.
- the shape of the limb part and the positioning of the hole coincide with the shape and positioning of corresponding elements of the first lock part.
- the limb part of the second lock part is also provided with a slot 58 which lies at the same distance from the outer edge, i.e.the side edge, 60 of the limb part, as the distance between the smaller hole 36 and the corresponding side edge of the first lock part.
- this config ⁇ uration enables the two lock parts to be held together when the lock is not in use, for instance with the aid of a key-ring, and thereby avoid the lock parts being left in different places and enabling the assembled lock parts still to be inserted one after the other in the manner intended.
- the inventive disk drive lock functions and is used in the following manner:
- the first lock part 10 is inserted into the disk space with the latching hooks 22, 24 pointing forwards, until the hooks 22, 24 are located behind the guide pins.
- the hooks 22, 24 extend down beneath the bottom surface of the lock part through a distance of 2.4 mm, this distance being governed by prevailing standards for guide pins and guide holes in 3.5" disks.
- the second lock part 40 is then inserted into the re ⁇ maining gap in the slot of the disk drive until the holes in respective limbs are in register with one another.
- the two lock parts can now be locked togeth- er, for instance by means of a padlock or the like.
- the combined thickness corresponds to the thickness of a disk and the latching hooks can therefore not be re ⁇ leased from the guide pins in the disk drive.
- the lock parts are preferably made of metal or a metal alloy, so as to obtain adequate mechanical strength in the region of the latching hooks.
- Figure 6 is a side view of a second lock part 70 which is intended particularly for use with computers having two disk drives arranged one above the other.
- the lock part 70 includes a web 71 which extends generally per ⁇ pendicular to the plane of said lock part and the height of which is adapted so that when the lock part is inserted into a bottom disk drive, the web will cover the opening to the upper disk drive.
- FIG 7 is a side view of another embodiment of the second lock part, here referenced 72.
- This lock part is particularly intended or use with portable comput ⁇ ers that are provided with an openable lid which covers the keyboard.
- the lock part has a free leg 74 which is joined to the web 73. This free leg prevents the lid or keyboard cover from being opened when the lock part is inserted in the disk drive.
- only part of the lid normally the front part, can be opened and the disk drive is locat ⁇ ed beneath the non-openable rear part of the lid.
- the problem presented hereby can be solved by adapting the configuration of the free leg to the computer con- cerned, as indicated in broken lines in Figure 8, by providing the limb with a lateral extension in the aforedescribed case.
- the lock part can be readily adapted to the computer construction concerned.
- Figure 9 illustrates another embodiment of a first lock part 75.
- the free, outwardly projecting limb 76 provided with hole 77 by means of which the two lock parts can be locked together is positioned centrally on the lock part for reasons explained herebelow.
- the latching hook 78 on the left side of the lock part is formed by punching a tab from the limb and bending the tab down to form a hook, as indicated by the hatched region, and by removing material from the limb to form an opening.
- Figure 10 illustrates another embodiment of a second lock part 79, the configuration of which coincides generally to the configuration of the first lock part shown in Figure 9. Distinct from the second lock part of the embodiment illustrated in Figure 3, the lock part 79 is asymmetrical in that the left side 80 of said, lock part, as seen in the Figure, is longer than the right side and essentially equally as long as a disk which fits into the disk drive concerned, where ⁇ as, in accordance with what has been described above with reference to Figure 2.
- the purpose of the asym ⁇ metric configuration of the second lock part is to enable the lock part to be reversed or turned over, so that its longer side can be placed on the right side of the disk drive. In this way, the lock will be sensed by the computer as a disk which cannot be read.
- the computer can then be made to operate in a manner which renders it impossible to start-up or boot the computer because of the unreadable disk.
- the computer can be used, but no disk can be inserted into the disk drive.
- This freedom of choice carries important advantages when, in some instances, it is desirable for the computer to be usable without the risk of a virus entering the system and/or when wishing to prevent copying. In other instances, it is essential that no one is able to enter the computer.
Landscapes
- Feeding And Guiding Record Carriers (AREA)
Abstract
Un verrou, destiné à un mécanisme de disquette informatique, évite toute utilisation illicite de ce mécanisme. Il comprend deux parties de verrou distinctes (10, 40) destinées à être insérées dans ce mécanisme l'une après l'autre de manière à se placer l'une au-dessus de l'autre et à présenter une épaisseur totale correspondant en pratique à celle d'une disquette. La première partie (10) comporte des ergots de blocage (22, 24) qui se bloquent derrière les tenons de guidage prévus dans ce mécanisme pour y positionner une disquette. Les deux parties de verrou (10, 40) comportent un segment (14, 54) qui fait saillie hors du mécanisme quand elles y sont insérées. Ces segments sont dotés de dispositifs (34, 56) qui permettent aux deux parties de verrou (10, 40) de se verrouiller l'une sur l'autre.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9201102-2 | 1992-04-07 | ||
SE9201102A SE9201102L (sv) | 1992-04-07 | 1992-04-07 | Lås för diskettstation |
SE9203041A SE501578C2 (sv) | 1992-04-07 | 1992-10-16 | Lås för diskettstation |
SE9203041-0 | 1992-10-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1993020559A1 true WO1993020559A1 (fr) | 1993-10-14 |
Family
ID=26661394
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/SE1993/000304 WO1993020559A1 (fr) | 1992-04-07 | 1993-04-07 | Verrou destine a un mecanisme de disquette informatique |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU3914193A (fr) |
SE (1) | SE501578C2 (fr) |
WO (1) | WO1993020559A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5693432A (en) * | 1994-12-29 | 1997-12-02 | Ishihara Sangyo Kaisha, Ltd. | Porous material-polymeric solid electrolyte composite, method for producing same and photoelectric conversion device using same |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4856304A (en) * | 1989-03-23 | 1989-08-15 | Derman Jay S | Security device for cassette tape decks or the like |
EP0384164A2 (fr) * | 1989-02-24 | 1990-08-29 | Datev Datenverarbeitungsorganisation Des Steuerberatenden Berufes In Der Bundesrepublik Deutschland Eg | Dispositif de verrouillage pour orifice de chargement d'unité d'entraînement de disques |
GB2240423A (en) * | 1990-01-30 | 1991-07-31 | British Telecomm | Security device for floppy disc drive |
WO1992015095A1 (fr) * | 1991-02-13 | 1992-09-03 | Kleinmaier Hans Peter | Dispositif de verrouillage d'au moins une unite de disquettes faisant partie d'une station d'unites de disquettes d'un ordinateur |
GB2253511A (en) * | 1991-02-18 | 1992-09-09 | John Hermann Eschenburg | Protection device |
-
1992
- 1992-10-16 SE SE9203041A patent/SE501578C2/sv not_active IP Right Cessation
-
1993
- 1993-04-07 WO PCT/SE1993/000304 patent/WO1993020559A1/fr active Application Filing
- 1993-04-07 AU AU39141/93A patent/AU3914193A/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0384164A2 (fr) * | 1989-02-24 | 1990-08-29 | Datev Datenverarbeitungsorganisation Des Steuerberatenden Berufes In Der Bundesrepublik Deutschland Eg | Dispositif de verrouillage pour orifice de chargement d'unité d'entraînement de disques |
US4856304A (en) * | 1989-03-23 | 1989-08-15 | Derman Jay S | Security device for cassette tape decks or the like |
GB2240423A (en) * | 1990-01-30 | 1991-07-31 | British Telecomm | Security device for floppy disc drive |
WO1992015095A1 (fr) * | 1991-02-13 | 1992-09-03 | Kleinmaier Hans Peter | Dispositif de verrouillage d'au moins une unite de disquettes faisant partie d'une station d'unites de disquettes d'un ordinateur |
GB2253511A (en) * | 1991-02-18 | 1992-09-09 | John Hermann Eschenburg | Protection device |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5693432A (en) * | 1994-12-29 | 1997-12-02 | Ishihara Sangyo Kaisha, Ltd. | Porous material-polymeric solid electrolyte composite, method for producing same and photoelectric conversion device using same |
Also Published As
Publication number | Publication date |
---|---|
SE9203041L (sv) | 1993-10-08 |
SE501578C2 (sv) | 1995-03-20 |
AU3914193A (en) | 1993-11-08 |
SE9203041D0 (sv) | 1992-10-16 |
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