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1. 发明授权

US4243186A Low profile magnetic tape drive with vacuum actuated auto-threading 失效
标题翻译：薄型磁带驱动器带真空启动自动线程
公开(公告)号：US4243186A
公开(公告)日：1981-01-06
申请号：US78845
申请日：1979-09-25
申请人： Jack Peter , Karl B. Offerman , Larry D. Brown , Derek J. Stone
发明人： Jack Peter , Karl B. Offerman , Larry D. Brown , Derek J. Stone
IPC分类号： G11B15/66 , G11B15/67 , G03B1/04 , G11B15/32
CPC分类号： G11B15/671 , G11B15/662
摘要： Supply and take-up reels are mounted above a horizontal base for selective powered rotation about respective vertical axes. Vertical guide surfaces and a cover panel define an air tight continuous flowpath extending between the peripheries of the reels past a read/write head. A blower mounted in a hood structure beneath the base sucks air through the flowpath and through a perforated center spool of the take-up reel. A river of air thus pulls and guides the free end portion of the magnetic tape from the supply reel to the take-up reel as the supply reel is rotated by a drive motor to unwind the tape therefrom. The supply hub is adapted to automatically center the supply reel thereon. The supply hub further includes a plurality of annularly spaced reel engaging pawls mounted in, and normally retracted into the hub, and an over-center actuating means for selectively extending the pawls through differential rotation of a pair of separate rotors included in the hub.
摘要翻译：供应和收卷盘安装在水平底座上方，用于围绕各自的垂直轴进行选择性动力旋转。垂直的引导表面和盖板限定了一个气密连续的流动路径，其延伸在卷轴的周边经过读/写头之后。安装在基座下方的发动机罩结构中的鼓风机通过流路吸入空气，并通过卷取卷轴的穿孔中心卷轴吸入。因此，当供应卷轴由驱动马达旋转以使卷筒退绕时，空气河由此拉动并将磁带的自由端部从供带盘导引到卷取卷轴。供应轮毂适于使供应卷轴自动居中。供应轮毂还包括多个环形间隔开的卷轴接合爪，其安装在并且通常缩回到轮毂中，以及用于通过包括在轮毂中的一对单独的转子的差速旋转来选择性地延伸棘爪的过中心致动装置。

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