前苏联专利SU1565357A3 Magnetic tape spool

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权利要求

类似技术

同族专利

引用文献

法律状态

优先权

专利摘要:
A magnetic-tape cassette has a front opening (7) which when the cassette is not in use is covered by a pivotal front cover (20) and a sliding plate (9) which is situated on the outside of the cassette housing (1) adjacent the bottom wall (2) thereof. In the closed position the sliding plate covers the front opening (7) at the bottom and a part of the magnetic tape (18a) which extends across said opening. The top wall (3) of the housing is imperforate and is contiguous with the front cover in the closed position of the cover. In the closed position the sliding plate (9) extends from the front of the cassette housing (1) beyond openings (4) in the bottom wall (2) to cover these openings. The sliding plate is formed with two apertures (15) which expose the openings (4) in the open position of the sliding plate (9). In the closed position the sliding plate (9) is latched by means of at least one latching member (27) which comprises a latching portion (29) and an actuating portion (30), the latter projecting into a slot or groove (32) in the sliding plate (9) near the rear end of the slot or groove when this plate (9) is in the closed position.
公开号:SU1565357A3
申请号:SU853873460
申请日:1985-04-01
公开日:1990-05-15
发明作者:Герардус Мария Кокен Карел；Францискус Вильхельмус Ван Де Керкхоф Хубертус；Корнелис Иозефус Олирок Джон；Мартин Бэиерсберген Ван Хенегаувен Корнелис
申请人:Н.В.Филипс Глоэлампенфабрикен (Фирма)；
IPC主号:

专利说明:

This invention relates to a magnetic recording technique - reproducing information.
The purpose of the invention is to improve operational performance by eliminating unauthorized access to the internal cavity of the cassette in its inoperative state.
Fig. 1 shows a tape cassette of the invention, a front cover and a sliding plate in the closed position in Fig. 2 — the bottom side of the cassette, a front cover and a sliding plate in the open position 5 in FIG. 3 — section A-A in FIG. .2 (slide plate in locked position); Fig. 4 is a section B-B in Fig. 25, the sliding plate in the same position as in Fig. 3 {in Fig. 5 is the same, the driving part of the locking element is raised by the unlocking means of the tape recorder; Fig. 6 is the same as in Fig. 2, the sliding plate is locked in the open position by the locking part of the locking element; Fig. 7 is the same as Fig. 2, a variant of the invention, a front cover and a sliding plate in the open position. Fig. 8 is a section B-B in Fig. 7 (the sliding plate is locked in the closed position).
A cassette with magnetic tape (Figures 1 and 2) includes a housing 1 with two parallel rectangular main walls: the first main wall 2 (figure 2) and the second main wall 3 (figure 1). The main wall 2 forms the lower wall of the cone and is provided with two annular holes 4 (only the right hole is shown in Fig. 2). The other main wall 3 is made without holes. In addition, the housing 1 of the cassette contains two side walls and a rear wall. 6, and in the front part it is provided with an opening 7, which is in the lower part of the junction back to the first main wall 2 and which is separated from the inside of the body 1 time by a dividing partition 8. Sliding plate 9 can slide along the first main wall 2 and contains the main part 10 which is located on the first main wall 2 in a plane, parallel to the plane of this wall, and two side walls 11, which are adjacent to the main part and are located adjacent to each side
Q 5 0 5 0
about 5 Q
five
On the inside, each side portion 11 is provided with a guide slot 11a, which slides into the groove 12 on the outside of the adjacent side wall 5 for guiding the slide plate 9 and simultaneously connecting it with the housing 1. Thus The sliding plate may slide relative to the cassette case between a closed position (shown by a solid line in FIG. 2), in which it covers the front opening of the cassette case at the bottom, and an open position (shown by a dotted line), in which the front opening It is open at the bottom for inserting tape feed ... tape recorder (not shown) into the hole. On the inside, the slide plate comprises a protrusion 13, which can move in a notch (not shown) in the first main wall 2. in the direction perpendicular to the rear wall 6, and to which one end of the tension spring 14 is attached, the other end of which is fixed to The inner side of the first main wall 2, wherein the tension spring 14 forms resilient means which press against the sliding plate 9 in the direction of the closed position. In the main part 10 of the slide plate A, there are two holes 15, which in the open position of the slide plate (FIG. 2) are arranged coaxially with the holes 4 in the main wall 2 so that the drive spindles (not shown) of the cassette recorder can enter hole of the cassette through the holes 4.
In the interior of the housing 1, the two coil sleeves 16 and 17 are supported between the main walls 2 and 3 in such a way that they can rotate around axes that are perpendicular to the base walls. The magnetic tape 18 is wound around the coil bushings, while the tape part 18 is located in a tensioned position across the front opening 7. The partition wall 8 is provided at the ends with 8h tape cylindrical curved guides (the left guide tape is visible in FIG. ). Each guide strip 8-a and a part of the adjacent side wall 5 at its front end are closed with a channel 19, through which
the magnetic tape 8 extends from the inside of the housing 1 across the front opening 7. When the cassette is in a non-operating state, for example, the front opening 7 is not inserted into the cassette recorder, the 18CL portion of the magnetic tape located across this opening is closed in two channels 19 front cover 20, which contains the main elongated part 21 and two side flanges 22 at the ends of the main part. The side flanges 22 are pivotally connected to the respective side walls 5 of the housing with the help of pivot pins 220. As shown in FIG. 1, the main part 21 of the front cover has a flange or protrusion 21 a along the front edge, which is flush with the cover and is in the same plane with The second main wall 3 of the housing 1. Similarly, when the front cover is open, its side flanges 22 abut and are in the same plane with the side portions 11 of the sliding plate 9. Thus, the correct closure of the magnet cartridge is ensured. second tape.
Inside the housing 1, adjacent to the main wall 3, is an elongated brake plate 23, which can move in a plane parallel to the plane of the wall 3, and is displaced in the direction of the rear wall 6 by the spring 24, which abuts the partition wall 8. In the off position, the brake plate 23 under the action of the spring 24 abuts against the annular surfaces of the coil sleeves 16 and 17 to prevent them from rotating and thus tensioning the tape 18 across the front opening 7 of the cassette case. The brake plate 23 is positioned across the cassette case from the side wall to the side wall and adjacent to these walls it is provided with rectangular side portions 25 which have a protrusion 26 directed through a groove (not shown) in the adjacent side wall 5. The protrusions 26 can move in these slots they are closed by the side parts 11 of the sliding plate 9 in the closed position of the plate. Thus, the protrusion 26 cannot be activated when the slide plate 9 is closed.
0
five
0
five
0
five
0
five
0
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However, when moving skg. plates back E open1 position1 (shown by the solid line in FIG. 2) the protrusions 26 are open and can interact with the edge portions 22 of the side flanges 22 of the front cover 20 so that the brake plate 23 moves forward with the flanges 22 when the front cover 20 turns in open position. Therefore, when the front cover is turned to the open position, the brake plate 23 is separated from the coil bushings 16 and 17.
In the closed position of the slide plate 9 (Fig. 1), the edge portion 11 in each side portion 1 of the slide plate is aligned with the edge portion 22b of the adjacent side flange 22 of the front cover 20 so that the front cover is locked L in the closed position. When the slide plate 9 is moved back to the open position (shown by solid lines in FIG. 2), the side portions 11 of the plate move back and release the flanges 22 of the cover for turning movement so that the front cover is unlocked and can be opened.
In the first main wall 2 there are two locking elements 27 (only right is shown in FIG. 2). The locking elements 27 are mirrored symmetrically with respect to a plane that is perpendicular to the main walls, and perpendicular to the plane in which the axes of rotation of the coil sleeves 16 and 17 are located, and are located at an equal distance from the coil sleeves 16 and 17. Locking elements 27 are made in one piece with the main wall 2 and each of them is located in a corresponding hole in this wall near one of the side walls 5 and at a short distance from the back of the passage 19 formed by this side wall tankoy. Each of the locking elements 27cc holds an elastic lever 28 located in the plane of the main wall 2 and directed in the direction of movement of the sliding plate 9. The rear end of the lever is connected to the wall 2, and the front end is formed by the locking part 29 (Fig.Z) and drive part 30 (Fig.4.4), which are located side to side on the lever 28 in the form of a solid protrusion and which protrude from the plane of the first main wall 2 on its outer (lower) side (Fig. 3 and 4). In the closed position of the sliding plate 9 (Fig. 3), the locking part 29 of each locking element cooperates with the end wall 31a of the corresponding opening formed by the groove 31 on the inner surface of the sliding plate 9, while the groove 31 is directed in the direction perpendicular to the rear wall 6 for locking the plate 9 in the closed position. In the open position of the slide plate 9, the locking part 29 cooperates with the leading edge 10 ci of the main part 10 of the slide plate 9 (Fig. 6) for locking the plate in this position. To ensure that both functions are correctly performed, as well as to securely lock the sliding plate 9 in the closed and open positions of the front and rear surface of the locking part 29 of each locking element, i.e. the surfaces that interact with the sliding plate, are directed under the straight angles to parallel planes of the sliding plate and the main wall 2. In most cases, the locking part is rectangular, In the closed position of the sliding plate 9, the drive part 30 of each locking element 27 protrudes into a corresponding groove 32 in the main part 10 of the sliding plate 9. The grooves 32 are directed backward from the leading edge of the plate 9, and the parts 30 are located adjacent to the rear ends of the grooves in the closed position of the plate. When the cassette is installed in a cassette recorder, each slot 32 includes a unlocking element present in the tape recorder, for example pin 33 (FIG. 3), and as the cassette moves forward, the corresponding drive part 30 engages and slides over it. lifting in this way, while the part 30 has a rounded profile, so that it can smoothly slide over the unlocking element. As a result of the deflection of the elastic arms 28 of the unlocking elements 27, the unlocking parts 29 of these elements are raised from the grooves 31 as far as
0
five
the plate 9 for unlocking the plate. In this case, the spring force of the levers 28 can be adjusted by choosing the length and thickness of the levers. Moreover, due to the use of levers
28 and parts 29 and 30 do not require additional parts to unlock the slide plate 9.
As already indicated, when the cassette with a magnetic tape is in the off position, the slide plate 9 is in the closed position and closes the openings 4 in the bottom wall 2 of the cassette case. This plate also closes the front opening of the casing at the bottom of the body such that a portion of 18 °. tape 18 is not accessible from the bottom of the cassette case. In the front part, the tape part 18a is closed by the main part 21 of the closed front cover 20, and the upper side is effectively protected by adhering between the upper flange or the projection 21 of the front cover 20 and the main wall of the cassette case. The locking elements 27 ensure that the slide plate 9 cannot move when the locking parts
29 is in the position of FIG. When the cassette is removed from the tape recorder, unlocking the slide plate 9 is sideways. It is more difficult, since there are two unlocking elements, and due to the fact that the drive parts 30 are located in relatively narrow slots 32, these drive parts cannot be pressed with fingers or a fingernail. Thus, the inventive cassette provides a high degree of protection against unintentionally opening the slide plate 9. When the slide plate is locked, the front cover 20 is also locked, so that the front
5, the cover does not accidentally open. The total locking of the front cover and the slider plate means that the brake plate 23 cannot be activated accidentally, which prevents the coil bushings from rotating when this is not necessary.
Consequently, when the slide plate 9 and the front cover 20 are closed, the tape cassette of the invention forms a fully enclosed assembly that is effectively protected from dust and dirt, as well as from mechanical influences that can cause damage.
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magnetic tape. Note that due to the open position, a portion of the magnetic tape 18a should be well protected when the cassette is in the inoperative position. This part of the magnetic tape has to be opened in the front opening 7 of the cassette body when the cartridge is inserted into the cassette recorder so that the tape feeding means can feed the tape 18 and wind it around the head drum of the tape recorder for recording or reading using rotary magnetic heads in head drum. Such a device, which uses a drum with swivel heads, can be a video recorder, as well as a tape recorder or data recorder for recording and / or reproducing signals in digital form. For the latter type of recorder, only a relatively small length of magnetic tape is required. For this purpose, the described cassette is suitable, since the used parts may be compact.
When inserting a cassette into a cassette recorder, it may be necessary to insert the cassette into the boot device of the machine. In this case, the device can be equipped with a so-called post hole in the front. During installation of the cassette, the unlocking elements of the apparatus, which can be permanently installed in the loading mechanism, enter the grooves 32 in the cassette sliding plate 9 through the recesses 21 in the lower edge of the main part 21 of the cassette front cover 20 (Fig. 1). the recesses 21 are located on a line with grooves 32 when the front cover is in the closed position, and instead of the pins 33, the unlocking mechanism may include protrusions on the bottom of the loading mechanism into which the cassette is inserted. During installation, the unlocking elements of the apparatus (Fig. 5) raise the drive parts 30 of the unlocking element 27, counteracting the spring force of the levers 28, which are thus deflected and the locking projections 29 out of the grooves 31 in the slide plate 9 for unlocking the plate. The unlocking elements 33 are then adjacent to the rear end walls of the grooves 32 in the plate 9 so about 10
15
20
25
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0
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0
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at the same time, as the cassette continues to advance, the sliding plate 9 is held back by the unlocking elements 33 in order to open the lower part of the front opening 7 of the cassette case 1. During this movement, the spring 14 becomes more tensioned. When the unlocking elements of the front edge of the main part 10 of the sliding plate 9 pass, the unlocking parts 29 snap onto the edge 10d (position 6) under the action of spring force of the levers 28 of the locking elements 27. In this position, the two locking parts 29 ensure the correct installation of the sliding plate 9 and locking it in this position. Thus, the locking elements are not loaded when the slide plate is in the open position and can be removed when the cassette is in the active position. In the final position, the slide plate is adjacent to the raised part of the first main wall 2 at a short distance from the rear wall 6. In this position, the holes 15 provide access to the holes 4 in the first main wall 2. Thus, the drive spindles of the cassette recorder can enter the engagement with the coil bushings or the cassette can be lowered by the loading mechanism onto these drive spindles.
As indicated, the front cover 20 is unlocked by moving the slide cover backward. As a result of the downward movement of the loading mechanism 4 of the apparatus, the front cover is opened in a known manner to the position of FIG. 2, and the brake plate 23 is moved forward by the side flanges 22 of the front cover against the force of the spring 24 to release the coil sleeves 16 and 17. From this moment the means of the apparatus, which now protrude into the front opening 7 of the cassette case, can pull the loop of the magnetic tape 18 out of the cassette and wind it around the drum with the heads, i.e. you can record and record on tape 18. i
When removing the cassette from the device, the drive parts 30 of the locking elements 27, located in accordance with
in this way, the locking parts 29 are disengaged from the front edge 10 and the main part 10 of the slide plate 9 to unlock the plate. Then, the spring 14 returns the sliding plate to a position (FIGS. 3 and 4), in which it is automatically locked by locking parts 29. Before the sliding plate 9 returns to the closed position, the front cover 20 rotates back to the closed position by gravity and the force created by the brake plate 23 due to the action of the spring 24. The front cover 20 is locked in the closed position by the side portions 11 of the slide plate 9 when the plate returns to the closed position.
one
In the second embodiment of the proposed cassette, each of the two locking elements 35 contains an elastic lever 36, provided with a locking part 37 of rectangular shape and a driving part 38, which is located on the locking part 37 and has a pyramidal profile. In the closed position of the slide plate 39, each of the locking parts 37 is adjacent to the wall of the hole 40 on the inner surface of the plate 39 and locks the plate 39. The drive part 38 projects into the corresponding groove 41 in the plate 39 while the groove 41 is directed in the same direction as groove 32 in the first embodiment. The opening 40 is located in the lower wall of the groove 41, and the other opening 42 in this wall is located adjacent to the front edge of the sliding plate 39. In the open position of the plate 39, the locking parts 37 adjoin the wall of the opening 42 and lock the plate. Preferably, the side walls of the groove 41 are deflected in the form of a tunnel in the direction of the main part 21 of the front cover 20, and the main part 21 is also provided with a notch in line with the groove 41. When inserting the cassette (Fig.7 and 8), the grooves 41 enter unlocking elements 32 apparatus. Each element lifts the drive part 38, which is located in the groove 41 next to the hole 40. At the same time, the pins on the device (not
thirty
40
-25, - 45 "
56535712
shown) adjacent to the rear edge of the plate 39 and move the plate in the direction of the rear wall. Due to this, the force of the pyramidal section 38 can smoothly move along the edge of the hole 40 and the lever 36 is deflected until part 38 is disengaged from the wall
The JQ holes 40. As a result, the slide plate 39 is unlocked from the locking element 35. Upon further insertion of the cassette, the inner side of the plate 39 slides over the top part 38 until parts 37 and 38 enter into hole 42 under the action of the spring force of the lever 36 In this position, the plates 39 (FIG. 7) of the locking parts 37 provide
20 correct installation of the plate 39 and its locking. When the cassette is removed from the apparatus, each part 38 is raised again by the unlocking element 33 of the apparatus so that the parts 37 and 38 are disengaged from the wall of the opening 42 to unlock the plate 39. Then the spring 14 returns the plate 39 back to the position of FIG. it automatically locks when parts 37 and 38 enter the hole 40. Since the drive part 38 is located in a relatively narrow groove 41, and part 38 does not protrude above the plane of the slide plate 35 of the slider plate 39, it is difficult to press the drive part with a finger or fingernail and, therefore, but unlock the sliding plate 39 when the cassette is outside the apparatus. Thus, this embodiment of the cassette also provides a high degree of protection against the involuntary opening of the slide plate 39.

In another embodiment (not shown), instead of two locking elements 27 or 35, only one unlocking element is used to lock the slide plate in the closed position. The slide plate can be held in the open position by the unlocking element or the elements of the cassette recorder. On the other hand, the slide plate can be held in the open position by pins (Figs. 7 and 8) that move the slide plate in the direction of the back wall when the cassette is inserted.

权利要求:
Claims (4)
[1]
1. A magnetic tape cartridge comprising a body having a first main wall with a front opening and two holes for magnetic tape cores, a second main wall parallel to the first wall, two side walls, a rear wall and a partition in the front of the body, as well as mounted for rotation between the main walls, two cores with magnetic tape, a front cover located opposite the partition and. having two side flanges hinged to the body, a sliding plate with a main part located on the outer side of the body in a plane parallel to the first main wall, and with side walls fitted with guide slots on the respective side walls of the body and mating with the front cover through locking edges, in order to improve performance by eliminating unauthorized access to the inner cavity of the cassette in its inoperative state, The main wall is rectangular with side recesses, which are installed side flanges of the front cover, the sliding plate being connected with the housing via a spring, its basic
12
tf (
22
Have
5 0 5
0
five
the part has dimensions corresponding to the dimensions of the first axle wall, and contains two openings of the cores, fixing the hromka of the side walls are mated with the locking edges of the side flanges of the front cover, while the first main wall contains at least one locking assembly a lever fixed with a lock part and a drive part located in slots in the sliding plate and made respectively with a rectangular and also rounded or pyramidal profiles.
[2]
2. The cassette according to claim 1, that is, the fact that the zg.mkov and the drive part of the locking assembly are made in the form of two projections, the lock part being located in the blank slot of the sliding plate, and the drive part - In through prorevi.
[3]
3. The cassette according to claim 1, so that the locks and the drive part of the locking assembly are located one above the other and are made in the form of a single protrusion, and the lock part is located in one of the two through slots in shaped holes made in the hollow slot of the sliding plate.
[4]
4. A cassette according to claim 1, characterized in that the front cover has a blind slot located in line with the slot in the slide plate.
P
20
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YU
/
57ЗШ
Fi.Z
Y1
YU
Fy
32
B-6
F
FIG. five
Jua Fie.6
X 35 37 W
.
2ZZZ 7X & Z2
J5
3B
Ohno
w
6
FIG. 7
2

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同族专利:

公开号 | 公开日

HK87391A|1991-11-15|

US4576345A|1986-03-18|

JPH0677363B2|1994-09-28|

AU581385B2|1989-02-16|

NZ211635A|1987-10-30|

USRE33872E|1992-04-07|

CA1235490A|1988-04-19|

ES295668U|1987-03-16|

NL8401028A|1985-11-01|

JPH0429150B2|1992-05-18|

ES295668Y|1987-11-01|

KR900010131Y1|1990-10-31|

JPH06162718A|1994-06-10|

AU566041B2|1987-10-08|

BR8501481A|1985-11-26|

AU4052885A|1985-10-10|

SG88090G|1990-12-21|

AU8192087A|1988-03-31|

DE3571095D1|1989-07-20|

EP0162487B1|1989-06-14|

EP0162487A1|1985-11-27|

KR850010671U|1985-12-30|

JPS60224173A|1985-11-08|

引用文献:

公开号 | 申请日 | 公开日 | 申请人 | 专利标题

US2941741A|1958-06-30|1960-06-21|Ibm|Tape cartridge and tape loading mechanism|

US3627225A|1970-07-30|1971-12-14|Ibm|Record member container|

US3980255A|1973-10-04|1976-09-14|Sony Corporation|Tape cassette|

US4021006A|1974-11-20|1977-05-03|Matsushita Electric Industrial Co., Ltd.|Container for magnetic tape|

US3987489A|1974-12-16|1976-10-19|Basf Aktiengesellschaft|Tape cartridge which is normally closed but is pivoted to open position when taken into use, and transport apparatus for such a cartridge|

JPS5931527B2|1976-06-16|1984-08-02|Teijin Ltd|

US4254922A|1978-02-21|1981-03-10|Robert Bosch Gmbh|Tape cassette|

NL165598C|1978-05-09|1981-04-15|Philips Nv|MAGNETIC TAPE CASSETTE.|

US4372504A|1979-10-26|1983-02-08|Olympus Optical Co., Ltd.|Magnetic record tape protective device for a tape cassette|

EP0052479A3|1980-11-17|1983-01-19|Matsushita Electric Industrial Co., Ltd.|Tape cassette|

JPS6316824B2|1981-06-22|1988-04-11|Sony Corp|

JPS6316826B2|1982-01-25|1988-04-11|Sony Corp|

DE3360970D1|1982-05-12|1985-11-14|Hitachi Maxell|Recording tape cartridge|

JPH0552595B2|1983-12-17|1993-08-05|Hitachi Maxell|

JPH0514990B2|1983-12-22|1993-02-26|Sony Corp|

JPH0514984B2|1985-01-23|1993-02-26|Sony Corp|JPS6250910B2|1983-09-19|1987-10-27|Sony Corp|

JPH0514990B2|1983-12-22|1993-02-26|Sony Corp|

JPH0419632B2|1984-03-07|1992-03-31|Sony Corp|

JPS6145783U|1984-08-27|1986-03-26|

JPH045117Y2|1984-08-27|1992-02-13|

US4676453A|1984-09-03|1987-06-30|Fuji Photo Film Co., Ltd.|Magnetic tape cassette|

US4742416A|1984-10-01|1988-05-03|Fuji Photo Film Co., Ltd.|Magnetic tape cassette with U-shaped slide guard|

JPS6176576U|1984-10-20|1986-05-23|

DE3537646A1|1984-10-24|1986-05-07|TDK Corporation, Tokio/Tokyo|TAPE CASSETTE|

JPH0514984B2|1985-01-23|1993-02-26|Sony Corp|

JPS61158678U|1985-03-22|1986-10-01|

NL8503463A|1985-12-17|1987-07-16|Polygram Bv|STORAGE BOX FOR A MAGNETIC CASSETTE.|

JPS62195279U|1986-05-30|1987-12-11|

JPS62195278U|1986-05-30|1987-12-11|

JPH0521738Y2|1986-06-12|1993-06-03|

JPH0521739Y2|1986-08-07|1993-06-03|

NL8701279A|1987-05-29|1988-12-16|Polygram Int Holding|COMBINATION OF MAGNETIC TAPE CASSETTE EQUIPMENT, PROVIDED WITH A LOADING DEVICE, AND A MAGNETIC TAPE CASSETTE, AND MAGNETIC TAPE CASSETTE APPARATUS OF SUCH COMBINATION.|

US5169088A|1989-08-04|1992-12-08|Shape, Inc.|Video cassette combined dust door and dust door latch spring|

US5026000A|1989-08-04|1991-06-25|Shape Inc.|Video cassette integral dust door latch/spring|

NL9001203A|1989-12-18|1991-07-16|Philips Nv|SYSTEM FOR RECORDING / DISPLAYING SIGNALS ON TAPES CONTAINED IN CASSETTES.|

KR930005620Y1|1989-12-21|1993-08-23|주식회사 에스케이씨|Reel locking deice for video cassette tape|

US5144511A|1990-08-20|1992-09-01|Fuji Photo Film Co., Ltd.|Magnetic tape cassette|

EP0480511B1|1990-10-11|1996-06-26|Koninklijke Philips Electronics N.V.|Cassette provided with magnetic tape|

EP0486042A3|1990-11-16|1992-12-09|Matsushita Electric Industrial Co., Ltd|A tape cassette|

US5331498A|1991-03-04|1994-07-19|Matsushita Electric Industrial Co., Ltd.|Tape cassette including a locking slider|

AU647985B2|1992-02-03|1994-03-31|Matsushita Electric Industrial Co., Ltd.|Tape cassette|

JP3242374B2|1999-01-14|2001-12-25|株式会社エースプレミアム|Cassette tape for VTR|

法律状态:

优先权:

申请号 | 申请日 | 专利标题

NL8401028A|NL8401028A|1984-04-02|1984-04-02|MAGNETIC TAPE CASSETTE.|

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