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WO1988002916A1 - Cassettes video - Google Patents

Cassettes video Download PDF

Info

Publication number
WO1988002916A1
WO1988002916A1 PCT/AU1986/000385 AU8600385W WO8802916A1 WO 1988002916 A1 WO1988002916 A1 WO 1988002916A1 AU 8600385 W AU8600385 W AU 8600385W WO 8802916 A1 WO8802916 A1 WO 8802916A1
Authority
WO
WIPO (PCT)
Prior art keywords
tape
cassette according
housing
cassette
reels
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.)
Ceased
Application number
PCT/AU1986/000385
Other languages
English (en)
Inventor
John Michael Woodbury
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of WO1988002916A1 publication Critical patent/WO1988002916A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • G11B23/02—Containers; Storing means both adapted to cooperate with the recording or reproducing means
    • G11B23/04—Magazines; Cassettes for webs or filaments
    • G11B23/08—Magazines; Cassettes for webs or filaments for housing webs or filaments having two distinct ends
    • G11B23/087—Magazines; Cassettes for webs or filaments for housing webs or filaments having two distinct ends using two different reels or cores
    • G11B23/08707—Details
    • G11B23/08785—Envelopes

Definitions

  • This invention relates to tape cassettes such as video, audio and computer tape cassettes.
  • tape cassettes such as video, audio and computer tape cassettes.
  • video cassettes for illustrative purposes only, particular reference will be made hereinafter to video cassettes.
  • this invention in one aspect resides broadly in a tape cassette including a substantially rectangular housing having a base wall and side walls which co-operate to form first and second chamber portions in which tape may be stored, said side walls including a leading wall assembly which is provided with pathways through which tape may pass through the front of said housing to said chamber portions and said pathways having tape guides across which tape may pass from one said chamber portion to the other.
  • the leading wall assembly may be in the form of a wall which extends continuously between said pathways or it may be constituted by a plurality of spaced columns or walls.
  • said side walls are formed from a low density plastics material suc as polystyrene foam or other foamed plastics material and adequate strength is achieved by making the side walls relatively thick.
  • the side wall thickness may be in the range of 2mm to 5 mm but preferably the side walls are formed with the base wall as a solid one piece body.
  • a separate base wall or an additional base wall lamination could be formed from relatively dense plastics material and connected to the side walls.
  • the side walls including integral tape guides and the base wall could be formed of dense plastics material if desired and in thin walled sections.
  • the first and second chamber portions may .be constituted by respective end portions of a single chamber or •recess, but preferably each said chamber portion is substantially cylindrical for retaining the tape reels in their operative attitude.
  • each cylindrical chamber may include an inwardly extending collar which locates between the end discs of each reel to retain the reels in its chamber.
  • the side walls may extend from said chamber portions to the outer peripheral side boundaries of the housing and appropriate voids may be formed in the side walls to reduce the volume of plastics material contained therein.
  • the housing may also include a top wall which may be connected to the upper face of said side walls. The top wall is preferably formed from a transparent material such that the video tape stored in said chamber portions is visible through said top wall.
  • the top wall may be formed from a low density plastics material and it may be formed integrally with said side walls or a portion thereof.
  • the top wall may be formed from a plastics material having a closure flap formed integrally therewith and connected to the top wall by a»live hinge or the like and adapted to pivot between' closed and open positions as in conventional video cassettes.
  • the top wall is adhered to the top face of said side walls so that the cassette cannot be taken apart without destroying the side walls.
  • the tape cassette is adapted as a video tape cassette and said leading wall assembly is recessed intermediate said tape guides for receiving a video player's tape carrier members when the latter are disposed rearwardly of video tape extending across said leading wall assembly.
  • the base wall is apertured to permit the drive spindles of a conventional video player to extend upwardly into said chamber portions and to provide recesses for locating pins for the optical sensor motor control and the brake release mechanism associated with a conventional video player.
  • Optical fibres may be embedded into or secured to the housing to enable circuitous light paths to be formed to direct light to the optical sensors.
  • optical fibres may be moulded into the housing or be adhered thereto or optical fibres may be formed integrally with a plastics leaf spring secured to the top of the cassette and utilized to force the tape reels downwardly to their stowed positions.
  • the tape cassette of the present invention is adapted as a one play or play only device and for this purpose a permanent magnet or electro-magnet means or other tape spoiling or upsetting means such as mechanical scratching or punching means is supported in the cassette.
  • the spoiling means may be supported in the housing adjacent to the end portion about which played tape returns to the housing.
  • a magnetic wire may be located in the top or bottom wall of the housing or in the receiving reel or about the periphery of the chamber portion which receives played tape.
  • the one play device of this invention also utilizes low grade tape in order to keep the cost of manufacture as low as possible.
  • the undersides of the tape reels may be provided with projections which pierce the lower wall of the housing or which engage in recesses or apertures formed therein.
  • sp.rlng means are provided to force the tape reels downwardly into engagement with the base wall and the arrangement is such that when the cassette is loaded onto the spindles of a player the tape reels are lifted upwardly to free the downward projections from the base wall of the cassette.
  • the outer periphery of a reel end disc may be arranged to engage non-rotatably in a shallow recess in the housing.
  • the packaging for the cassette may Include fold-in portions which engage with the internal splines on the tape reels to prevent the latter from rotating.
  • this invention resides in a - D -
  • top and bottom walls formed of relatively high density plastics material and a body portion extending therebetween and formed of low density plastics material.
  • the top wall is transparent and the ' body is formed from foamed plastics material and with integral tape guide surfaces.
  • FIG 1 is a top perspective view of a video cassette housing
  • FIG 2 is an underside perspective view of the cassette
  • FIG 3 is an exploded view of the video cassette
  • FIG 4 is an exploded perspective view of an alternate form of video cassette housing
  • FIG 5 is a perspective view of a further form of video cassette;
  • FIG 6 is a cross-sectional view along the line 6-6 of
  • FIG 5 A first figure.
  • FIG 7 is a view which corresponds to FIG 6 but illustrating yet another embodiment of the invention
  • FIG 8 is an exploded perspective view of a preferred form of tape reel.
  • the video cassette 10 is in the form of a substantially rectangular housing 11 for supporting a pair of tape reels 12 (illustrated in Fig 3 only) whereby for storage purposes, video tape 13 may extend across the recessed leading wall 14 concealed by the pivotable cover flap 15.
  • the latter is connected hingedly to the top wall 16 of the housing by a live hinge 17.
  • the top wall 16 and the cover flap 15 may be produced as an injection moulding or as an extrusion and the /0291 _ _ _ _
  • live hinge 17 may be so formed as to be useful for only a limited number of pivoting operations before breaking.
  • a resilient retaining bow 18, which may be integral with the top wall T6, is supported therebeneath whereby its opposed end portions 19 bear down on top of the central portion of each reel 12 to force them into firm engagement with the base wall 20.
  • the underside of each reel 12 is provided with downwardly projecting nibs 21 which engage with the base wall 20 and prevent rotation of the reels 12 when they are forced into their lowermost position by the bow 18.
  • the base wall 20 and the side walls, including the leading wall 14 and the trailing and end walls 22 and 23 respectively, are moulded as a solid one piece article and suitably from polystyrene foam.
  • the leading wall 1 is provided with recesses 26 and 27 for location of video player carrier rollers behind the stored tape 13 as well as a recess 28 for the pinch roller of a video player.
  • the leading wall 14 is provided with respective tape * pathways 29 and 30 extending through the front of the housing 11 into the respective reel locating recesses 31 and 32.
  • the base wall 20 is apertured at 33 and 34 centrally of the recesses 31 and 32 to enable the drive spindles of a video player to engage with the tape reels 12.
  • a permanent magnet shown in dotted outline at 35 is moulded into the inner corner portion 36 adjacent the inner end of the tape slot 30.
  • the magnet 35 in use, destroys the recording on the video tape as it passes from the feeding reel 12 in the recess 31 to the receiving reel 12 in the recess 32.
  • outer corners 40 and 41 of the leading wall 14 of the pathways exits are rounded so as to provide a smooth guide surface across which the video tape may pass to and from the reels 12.
  • Smooth corners are also provided on the side walls at inner ends of the slots 29 and 30 so that in use passage of tape across those corners will not damage the tape.
  • the underside of the cassette 10 is similar to a conventional cassette and in-order that the cassette 10 of the present invention may be used with conventional players it is provided with a recess 42 into which the brake release pin of the player may pass, as well as a recess 43 into which the optical sensor for the motor control may pass and locating recesses including a circular recess 44 and an elongated recess 45 arranged in conventional manner.
  • the body 25 in this embodiment is formed from polystyrene foam or the like low density plastics material so that any attempt to dismantle the assembly, such as to remove the permanent magnet 35, will result in substantial damage to the body 25.
  • a magnetised wire can be placed in the body 25 so that it will be extremely difficult to remove and leave the cassette functional.
  • the density of the body may be such that continued use of the cassette 10 will cause flaking of the corners 40 and 41 or other parts of the housing whereby the cassette will become unserviceable.
  • the outer end portions of the leading wall 14 and/or other parts of the cassette may be formed of thin wall sections in order to provide a relatively weak structure which will withstand a single playing but not repeated insertion and ejection from video playing apparatus or rewinding.
  • Such thin wall sections may be adapted to fold in and jam the apparatus if rewinding is attempted.
  • cassettes of this invention may have an extended life and be used as a replayab e tape.
  • the cassette 50 illustrated in FIG 4 has a body formed in three separate pieces, namely a fixed top cover 51, a central body section 52 and a bottom wall 53.
  • the body section 52 can be formed of a low density plastics material which is reinforced by the relatively thin high density plastics cover 51 and bottom wall 53. The latter may be provided with the necessary cutouts and recesses and if desired the body section 52 could be sliced from an extruded bar of plastics material having the cross-sectional configuration as illustrated.
  • the body section 52 could be formed with an integral base wall adapted to overlie the bottom wall 53.
  • a permanent magnet 54 is supported in the wall section at the trailing end of the entrance pathway 55.
  • the magnet can be left out if the cassette is to be used as a multiple play or t recording device.
  • the one-play cassette of this invention has the advantage that It can not be used to record since Information recorded onto the tape is upset upon passage to the storage reel. Thus such one-play cassettes can only be used for their original intended purpose which is- the play back of pre-recorded material. If desired reverse recording techniques may be used to record onto the tape but such techniques are not generally available and thus such recording could be limited to authorised persons.
  • The- video cassette 60 illustrated in Figs 5 and 6 has a solid body 61 formed of mass foamed plastics material such as polystyrene foam which may by moulded in a two part mould.
  • each reel recess 62 has a shallow intermediate serrated step 63 in which the enlarged and serrated top disc 64 of each reel 65 locates to prevent accidental rotation of the reels 65.
  • a spring bow 66 holds the reels 65 in their stored position.
  • the top disc 64 and the bottom disc 67 also form dust covers to prevent ingress of dust into the tape chamber 68 when the cassette is stored.
  • the tape pathways 69 and 70 diverge inwardly towards the reel recesses so that passage of tape from the reels, whether full or empty, to the rounded guide abutment 71 is always clear of the pathway walls 72 and 73.
  • the cassette 75 illustrated in FIG 7 and 8 also utilizes a mass foamed polystyrene body 76.
  • the top disc 77 and bottom disc 78 of the reel 90 have similar overall diameters and the body 76 includes an annular retaining flange 79 which engages between the reel discs 77 and 78.
  • the top disc 77 is connected by snap together fastenings 80 and 80A to the hub 81 and bottom disc 78 after they have been inserted in the recess 82 whereby the top and bottom discs 77 and 78 form the top and bottom walls of the disc recess 82.
  • the tape retaining segment 83 of the reel 90 is formed integrally with the hub 81 and it is connected thereto by a live hinge 84 instead of being a separate part as in conventional constructions. Its free end is provided with a snap lock fastening 85 with engages behind the fixed hub portion 86 when the segment 83 is pivoted inwardly to secure the end of the tape to the hub 81.

Landscapes

  • Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)

Abstract

Une cassette à bande (60) comporte une paire de bobines de bande (65) disposées dans des évidements ménagés dans un corps solide (61), lequel est pourvu de passages (73) pour la bande à travers lesquelles elle passe pour aller s'enrouler ou se dérouler par rapport aux bobines respectives (65) en contournant des faces de guidage (71) faisant partie intégrante du corps (61). Celui-ci se compose de préférence de mousse plastique.
PCT/AU1986/000385 1986-10-20 1986-12-17 Cassettes video Ceased WO1988002916A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU856986 1986-10-20
AUPH8569 1986-10-20

Publications (1)

Publication Number Publication Date
WO1988002916A1 true WO1988002916A1 (fr) 1988-04-21

Family

ID=3699292

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1986/000385 Ceased WO1988002916A1 (fr) 1986-10-20 1986-12-17 Cassettes video

Country Status (1)

Country Link
WO (1) WO1988002916A1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2214163A (en) * 1988-01-25 1989-08-31 Skc Ltd Spring for magnetic tape cassette
EP0492012A1 (fr) * 1990-12-24 1992-07-01 Metarex Research Institute Corp Cassette à bande
EP0502077A4 (en) * 1989-11-22 1993-03-31 Carle D. Klupt Limited use video cassette and integral mailer
EP0503007A4 (en) * 1990-05-11 1994-09-14 Paul J Gelardi Integrally molded recyclable video tape cassette
EP0566664A4 (fr) * 1991-01-10 1994-10-19 Paul J Gelardi Videocassette peu couteuse.
GB2261867B (en) * 1991-11-27 1995-03-01 Bico Magnetics Limited Magnetic tape cassette
EP0689710A4 (fr) * 1992-06-11 1995-09-26 Edwin C Mclaren Cassette composite de bande magnetique
EP0793845A4 (fr) * 1994-11-22 1997-11-12 Lite Corp V Cartouche de cassette video legere, a partie centrale fixe
EP0827624A4 (fr) * 1995-05-05 1998-04-22
EP0860009A4 (fr) * 1995-11-06 1999-10-06 Lite Corp V Cartouche de cassette video d'un faible poids

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1234816A (en) * 1968-07-10 1971-06-09 Tape Systems Ltd Improvements in or relating to tape recording and/or replay machines and to cassettes and cartridges for use therewith
GB1471486A (en) * 1974-06-24 1977-04-27 Shui Ting Lu Magnetic tape cassette
JPS53102015A (en) * 1977-02-17 1978-09-06 Toshiba Corp Solidified tape cassette
JPS5570977A (en) * 1979-10-22 1980-05-28 Toshiba Corp Solidstate tape cassette
JPS5661070A (en) * 1980-10-13 1981-05-26 Toshiba Corp Solid tape cassette
JPS5661069A (en) * 1980-10-13 1981-05-26 Toshiba Corp Solid tape cassette
JPS60124082A (ja) * 1983-12-06 1985-07-02 Teac Co テ−プカセツト
EP0191307A2 (fr) * 1985-01-14 1986-08-20 Fuji Photo Film Co., Ltd. Cassette pour loger des films électroconducteurs

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1234816A (en) * 1968-07-10 1971-06-09 Tape Systems Ltd Improvements in or relating to tape recording and/or replay machines and to cassettes and cartridges for use therewith
GB1471486A (en) * 1974-06-24 1977-04-27 Shui Ting Lu Magnetic tape cassette
JPS53102015A (en) * 1977-02-17 1978-09-06 Toshiba Corp Solidified tape cassette
JPS5570977A (en) * 1979-10-22 1980-05-28 Toshiba Corp Solidstate tape cassette
JPS5661070A (en) * 1980-10-13 1981-05-26 Toshiba Corp Solid tape cassette
JPS5661069A (en) * 1980-10-13 1981-05-26 Toshiba Corp Solid tape cassette
JPS60124082A (ja) * 1983-12-06 1985-07-02 Teac Co テ−プカセツト
EP0191307A2 (fr) * 1985-01-14 1986-08-20 Fuji Photo Film Co., Ltd. Cassette pour loger des films électroconducteurs

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2214163A (en) * 1988-01-25 1989-08-31 Skc Ltd Spring for magnetic tape cassette
GB2214163B (en) * 1988-01-25 1992-03-25 Skc Ltd Spring for magnetic tape cassette
EP0502077A4 (en) * 1989-11-22 1993-03-31 Carle D. Klupt Limited use video cassette and integral mailer
EP0503007A4 (en) * 1990-05-11 1994-09-14 Paul J Gelardi Integrally molded recyclable video tape cassette
EP0492012A1 (fr) * 1990-12-24 1992-07-01 Metarex Research Institute Corp Cassette à bande
EP0566664A4 (fr) * 1991-01-10 1994-10-19 Paul J Gelardi Videocassette peu couteuse.
GB2261867B (en) * 1991-11-27 1995-03-01 Bico Magnetics Limited Magnetic tape cassette
EP0689710A4 (fr) * 1992-06-11 1995-09-26 Edwin C Mclaren Cassette composite de bande magnetique
EP0793845A4 (fr) * 1994-11-22 1997-11-12 Lite Corp V Cartouche de cassette video legere, a partie centrale fixe
EP0827624A4 (fr) * 1995-05-05 1998-04-22
EP0860009A4 (fr) * 1995-11-06 1999-10-06 Lite Corp V Cartouche de cassette video d'un faible poids

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