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11. 发明授权

US5170962A Tape cassette with lid assembly which, in a closed position, protects front and rear surfaces of a tape run extending across a recess at the front of the cassette 失效
标题翻译：带有组件的带子组件，在封闭位置，保护前面和后面的表面延伸在CASSETTE前面延伸
公开(公告)号：US5170962A
公开(公告)日：1992-12-15
申请号：US682268
申请日：1991-04-08
申请人： Yuji Iwahashi , Masanori Abe
发明人： Yuji Iwahashi , Masanori Abe
IPC分类号： G11B23/087
CPC分类号： G11B23/08735
摘要： A tape cassette having an opening at the front of the cassette housing across which a run of the tape is guided is provided with a lid assembly which includes a front closure having a relatively deep outer portion joined at the top to a relatively shallow inner portion which embrace the tape run in a closed position of the lid assembly, a rear closure pivoted to the inner portion of the front closure for completing the enclosure of the tape run when embraced by the front closure, and a forwardly directed flange at the top of the cassette housing extending to the front closure in the closed position of the latter for closing the top of the front opening of the cassette housing without obstructing the mouse area thereof.

12. 发明授权

US5075810A Tape cassette with sealed light aperture 失效
标题翻译：带密封光孔的胶带
公开(公告)号：US5075810A
公开(公告)日：1991-12-24
申请号：US636564
申请日：1991-01-07
申请人： Yuji Iwahashi
发明人： Yuji Iwahashi
IPC分类号： G11B23/30 , G11B23/087 , G11B23/02
CPC分类号： G11B23/0875 , G11B23/08714 , G11B23/08785
摘要： A tape cassette suitable for use in an 8-mm video tape recorder for recording and/or reproducing video and audio signals, which comprises a light projecting section inserting aperture formed on the bottom surface of the cassette near the front surface of the cassette between supply and takeup reels juxtaposed in the cassette, light receiving windows formed through the both side walls of the cassette for passing therethrough a light emitted from a light emitting element inserted in the light projecting section inserting aperture and a transparent portion molded integrally with the upper surface of the cassette such that the supply and takeup reels are visible through the transparent portion, wherein a transparent portion formed at least a part of a wall portion surrounding the light projecting section inserting aperture is integrally molded with the transparent portion of the upper surface of the cassette, to thereby easily manufacture the tape cassette which can prevent infiltration of dust or the like and accordingly protect the magnetic tape from appearing thereon rust or the like.

13. 发明授权

US4903915A Tape cassette having means for locking reels thereof 失效
标题翻译：磁带盒具有用于锁定卷轴的装置
公开(公告)号：US4903915A
公开(公告)日：1990-02-27
申请号：US306667
申请日：1989-02-06
申请人： Yuji Iwahashi
发明人： Yuji Iwahashi
IPC分类号： G11B23/087
CPC分类号： G11B23/08721
摘要： A tape reel lock and release device having gear portions formed around outer peripheries of a pair of tape reels rotatably provided within a cassette half, a tape reel locking member having a slider portion which is slidably spring-biased by a spring between the pair of tape reels within the cassette half in the direction in which it is engaged with the gear portions of the pair of tape reels and a pair of engaging members coupled to a top end of the slider portion to be engaged with the gear portions of the tape reels, the pair of engaging members being curved at their tip ends toward the gear portions and having hinge portions formed at their base end portions so as to be displaced in the direction in which the pair of engaging members approach each other and an extending operation member protrusively formed on the cassette half so as to be located between the engaging members and entering, when the tape reel locking member is slidably moved toward the reel locking direction, between the engaging members to extend the engaging members toward the gear portions of the tape reels. Thus, when the engaging members are engaged with the gear portions of the tape reels, the slackening of a magnetic tape wound around the tape reels can be absorbed and the tape reels can be prevented from being rotated inadvertently.

14. 发明授权

US4901171A Optical tape end sensing arrangement for magnetic tape cassette 失效
标题翻译：用于磁带盒的光带末端感测装置
公开(公告)号：US4901171A
公开(公告)日：1990-02-13
申请号：US174206
申请日：1988-03-28
申请人： Kiyoshi Urayama , Shinya Sato , Yuji Iwahashi
发明人： Kiyoshi Urayama , Shinya Sato , Yuji Iwahashi
IPC分类号： G11B23/30 , G11B15/18 , G11B23/04 , G11B23/087
CPC分类号： G11B23/0875 , G11B23/08714
摘要： A tape cassette arrangement includes structures formed integrally with the cassette halves or simply fitted into the light transmission apertures. Specific embodiments of the invention include light polarizing elements which are fitted into apertures formed in the sides of the cassette, corrugations on the interior of the cassette proximate the apertures, and shielding walls which are located to block light and in particular that light which tends to enter through a large window provided in the upper surface of the cassette and through which the status of the tape is visible.

15. 发明授权

US4893766A Tape cassette having a front lid and a back lid 失效
标题翻译：带盒具有前盖和后盖
公开(公告)号：US4893766A
公开(公告)日：1990-01-16
申请号：US279539
申请日：1988-12-05
申请人： Shuichi Yamashina , Minoru Yahagi , Yuji Iwahashi
发明人： Shuichi Yamashina , Minoru Yahagi , Yuji Iwahashi
IPC分类号： G11B23/087 , G11B23/113 , G11B23/04
CPC分类号： G11B23/08735 , B29C2045/0027
摘要： A tape cassette is disclosed, in which upon non-use a tape-exposed portion is closed by a front lid and a back lid provided at the tape-exposed portion of a reel-to-reel type tape cassette. In this case, an injection gate is provided at a thick portion of a front wall of the front lid at its central portion thereby to mold the front lid.

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