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1. 发明授权

US5140488A Magnetic tape cassette 失效
公开(公告)号：US5140488A
公开(公告)日：1992-08-18
申请号：US574094
申请日：1990-08-29
申请人： Masanobu Sugiyama , Hiroshi Meguro
发明人： Masanobu Sugiyama , Hiroshi Meguro
IPC分类号： G11B23/087
CPC分类号： G11B23/08721 , G11B23/08735
摘要： A magnetic tape cassette having an upper part and a lower part combined during assembly to form a unitary housing, a front lid that can be moved between an open position and a closed position, a pair of reel hubs rotatably mounted within the cassette housing for winding a tape thereon, and a hub lock member for locking the pair of reel hubs, includes a structure to temporarily secure the hub lock member to the upper part in a range outside a normal movable range of the hub lock member. This structure is formed as a cut-away portion having a predetermined width in its movable direction formed on the hub lock member and a stopper portion formed on the lower part in association with the cut-away portion, so that an edge of the cut-away portion comes in contact with the stopper portion to prevent the hub lock member from being once again secured to the upper part once the housing is assembled.

2. 发明授权

US06421203B1 Magnetic tape cassette slider lock mechanism with tapered surfaces and coil spring bias 失效
标题翻译：带有锥形表面和螺旋弹簧偏置的磁带盒滑块锁定机构
公开(公告)号：US06421203B1
公开(公告)日：2002-07-16
申请号：US07966707
申请日：1992-10-26
申请人： Masanobu Sugiyama
发明人： Masanobu Sugiyama
IPC分类号： G11B2302
CPC分类号： G11B23/08735
摘要： A tape cassette includes a cassette housing composed of an upper cassette part and a lower cassette part, a slider slidably attached to the cassette housing so as to open and close an opening in the lower surface of the housing, a slider lock portion provided on the lower cassette part to lock the slider at a predetermined position, and an engagement aperture bored through the slider so as to oppose an engagement portion of the slider lock portion for engagement therewith, which has an inclined portion formed at one end. Further, the tape cassette includes a protruded pin projected from the upper cassette part opposing the slider lock portion, and a spring fit around the protruded pin and interposed between the slider lock portion and the upper cassette part such that the slider lock portion is biased in a direction of engagement with the engagement aperture, wherein at least one end portion of the spring is bent toward the inside of a coil winding portion to form a pin supporting portion which is wound around the protruded pin.
摘要翻译：磁带盒包括由上盒部件和下盒部件构成的盒壳体，滑动地安装在盒壳体上以便打开和关闭壳体下表面中的开口的滑块，设置在壳体上的滑块锁定部分下部盒部件将滑块锁定在预定位置，以及通过滑块钻出的接合孔，以与滑块锁定部分的接合部分相对，用于与其接合，该接合部分在一端形成有倾斜部分。此外，磁带盒包括从与上述滑块锁定部分相对的上部盒体部突出的突出销，以及弹簧，该突起销装配在该突出销的周围，并插入该滑块锁定部分和该上部盒部件之间，使得该滑动器锁定部分被偏置与所述接合孔接合的方向，其中，所述弹簧的至少一个端部朝向线圈缠绕部的内侧弯曲，以形成围绕所述突出销缠绕的销支撑部。

3. 发明授权

US5143317A Tape cassette with dual hub lock torsion springs 失效
标题翻译：带双重锁定扭矩弹簧带
公开(公告)号：US5143317A
公开(公告)日：1992-09-01
申请号：US625885
申请日：1990-12-11
申请人： Masanobu Sugiyama
发明人： Masanobu Sugiyama
IPC分类号： G11B23/087
CPC分类号： G11B23/08742
摘要： A magnetic tape cassette having a cassette casing formed of upper and lower parts, reel hubs accommodated within the cassette casing and around which a magnetic tape is wound, a locking member for locking rotation of the reel hubs, a tape loading pocket portion formed on any one of the upper and lower parts, a slider for opening and closing reel shaft insertion apertures, a slider lock member provided on the part through the reel shaft insertion apertures are formed and for locking the slider at an opening position and at a closing position and limiter pins for preventing the slider lock member from being deformed more than is necesssary. This magnetic tape cassette is comprised of a pair of left and right hub lock springs for spring-biasing the hub lock member in the direction in which the reel hubs are locked, wherein one end portions of the two hub lock springs are slidably engaged with the hub lock member, coil spring portions are formed on the other end portion of the hub lock springs, the coil spring portions are inserted into the limiter pins, the hub lock springs are engaged with and secured to at their intermediate portions one of the upper and lower parts while being deformed with resiliency, and the coil spring portions are opposed to the slider lock member.

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