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1. 发明授权

US4011513A Tuning device for a radio receiver 失效
标题翻译：无线电接收机的调谐装置
公开(公告)号：US4011513A
公开(公告)日：1977-03-08
申请号：US668382
申请日：1976-03-19
申请人： Manabu Kawachi
发明人： Manabu Kawachi
IPC分类号： G05G7/02 , H04B1/08 , H04B1/06
CPC分类号： H04B1/08 , G05G7/02
摘要： A tuning device for a radio receiver is disclosed wherein the manual knob which permits tuning and permits viewing of a radio frequency scale can be pivoted to face the operator directly. The manual knob is rotatably linked to a shaft of a tuning element, such as a variable capacitor or a variable inductance, by a coupling means including at least one universal joint.
摘要翻译：公开了一种用于无线电接收机的调谐装置，其中允许调谐和允许观看无线电频率刻度的手动旋钮可枢转以直接面对操作者。手动旋钮通过包括至少一个万向接头的联接装置可旋转地连接到诸如可变电容器或可变电感的调谐元件的轴。

3. 发明授权

US4811406A Compound speaker system 失效
标题翻译：复合扬声器系统
公开(公告)号：US4811406A
公开(公告)日：1989-03-07
申请号：US71538
申请日：1987-07-10
申请人： Manabu Kawachi
发明人： Manabu Kawachi
IPC分类号： H04R1/26 , H04R1/32 , H04R1/02
CPC分类号： H04R1/26 , H04R1/323
摘要： A compound speaker system comprising a woofer, a squawker, a tweeter, and a super tweeter. The squawker, the tweeter, and the super tweeter are attached to a plate and the assembly is rotatably positioned within the cone of the woofer. Since the squawker, the tweeter, and the super tweeter are positioned at different distances from the axis of the assembly rotation, it is possible to design the system such that the speaker which reproduces relatively directional sound, such the tweeter or the super tweeter takes an elevated position as compared to the squawker when the assembly is rotated within the woofer cone.
摘要翻译：一种复合扬声器系统，包括低音扬声器，摇摆器，高音单元和超高音单元。歹徒，高音扬声器和超高频扬声器连接到一个板上，该组件可旋转地定位在低音扬声器的锥体内。由于歹徒，高音扬声器和超高音扬声器位于与组件旋转轴线不同的距离处，因此可以设计系统，使得再现相对方向声音的扬声器，例如高音单元或超高音单元需要当组件在低音喇叭锥体内旋转时，与斩波器相比，升高位置。

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