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21. 发明授权

US5235294A Auto-tuned apparatus for band-pass filter 失效
标题翻译：自动调谐装置用于带通滤镜
公开(公告)号：US5235294A
公开(公告)日：1993-08-10
申请号：US822524
申请日：1992-01-17
申请人： Youhei Ishikawa , Hidekazu Wada , Sadao Yamashita , Hiroyuki Kubo
发明人： Youhei Ishikawa , Hidekazu Wada , Sadao Yamashita , Hiroyuki Kubo
IPC分类号： H03J7/02
CPC分类号： H03J7/02
摘要： An auto-tuned apparatus for a band-pass filter, wherein, the generated reference signals having the given frequency to be set are mixed with signals to be outputted from the band-pass filter when the reference signals have been inputted to the band-pass filter so as to multiply them for outputting the signals of the multiplied results, the signals of the direct current component from the signals of the multiplied results to be outputted are filtered, and the band-pass filter is controlled so that the center frequencies of the band-pass filter may agree with the frequencies of the reference signal in accordance with the signal of the direct current component to be outputted, whereby the center frequency of the band-pass filter can be adjusted automatically to the desired set value with simple circuit construction and precision better than in the conventional embodiment.

22. 发明授权

US5049842A Dielectric resonator having a cutout portion for receiving an unitary tuning element conforming to the cutout shape 失效
标题翻译：介质谐振器具有用于接收符合切口形状的单一调谐元件的切口部分
公开(公告)号：US5049842A
公开(公告)日：1991-09-17
申请号：US271603
申请日：1988-11-15
申请人： Youhei Ishikawa , Hidekazu Wada , Kouichi Takehara , Toru Tanizaki , Shigeji Arakawa , Shinichi Kunioka
发明人： Youhei Ishikawa , Hidekazu Wada , Kouichi Takehara , Toru Tanizaki , Shigeji Arakawa , Shinichi Kunioka
IPC分类号： H01P7/10
CPC分类号： H01P7/10
摘要： This dielectric resonator comprises a cylindrical hollow case made of metal, a cylindrical hollow dielectric resonator element which is fixed and held in the case, and a dielectric tuning unit which is inserted into or withdrawn from a hollow portion of the dielectric resonator element. The hollow portion of the dielectric resonator element is formed by at least one, or a plurality of, cutout portions which extend along respective radii of the cylindrical dielectric resonator. In this dielectric resonator, the overall effective dielectric constant as a whole can be varied by inserting the tuning unit into or withdrawing it from the hollow portion of the dielectric resonator element. When the tuning unit is withdrawn from the hollow portion of the dielectric resonator element, part of an electric field path at the dielectric resonator element is interrupted by the cutout portions.

23. 发明授权

US4917317A Toroidal coil winding machine 失效
标题翻译：环形线圈绕线机
公开(公告)号：US4917317A
公开(公告)日：1990-04-17
申请号：US266312
申请日：1988-10-31
申请人： Takao Iihama , Hidekazu Wada
发明人： Takao Iihama , Hidekazu Wada
IPC分类号： H01F21/00 , H01F41/06 , H01F41/08
CPC分类号： H01F41/08 , Y10T29/49071
摘要： A toroidal coil winding machine for winding a wire in a coil on a work such as a toroidal core of a magnetic head comprises, as the principal components, a rotary table for fixedly holding a work thereon, capable of being turned intermittently through an angle of 180.degree. at a time, a pair of mobable arms disposed on the diametrically opposite sides of the rotary table, respectively, provided with mechanical hands for gripping a wire, respectively, and capable of being moved between the respective front positions and the back positions, a clamping device for holding one free end of the wire, mounted on the rotary table, a loop holding device for holding loops of the wire wound on the work while the rotary table is stopped, mounted on the rotary table, a wire reel for feeding the wire, a wire holder disposed near the wire reel for temporarily holding the wire drawn out from the wire reel, and a cutter disposed near the wire holder for cutting the wire in a predetermined length. The movable arms are advanced to the front positions, respectively to transfer the other free end of the wire from one to the other or from the other to the one of the mechanical hands. After the other free end of the wire has been passed through an opening formed in the work and has been gripped by one or the other of the mechanical hands, the rotary table is turned through an angle of 180.degree. to wind the wire on the work.
摘要翻译：用于将线圈缠绕在诸如磁头的环形铁芯的工件上的线圈的环形线圈绕线机包括作为主要部件的用于固定地保持其上的工件的旋转工作台，其能够间歇地通过角度一次180度，分别设置在旋转工作台的径向相对侧上的一对可动臂，分别具有用于夹紧线材并且能够在相应的前部位置和后部位置之间移动的机械手，用于保持安装在旋转工作台上的线的一个自由端的夹持装置，用于在旋转台停止时保持卷绕在工件上的线的保持环的环保持装置，安装在旋转台上，用于馈送的线盘所述线材，设置在所述线卷盘附近的线架，用于暂时保持从所述线卷轴拉出的线;以及切割器，设置在所述线保持器附近，用于以预定长度切割所述线。可移动臂分别前进到前部位置，以将电线的另一个自由端从一个或另一个转移到一个机械手。在电线的另一自由端已经通过形成在工件中的开口并且被一个或另一个机械手夹持之后，旋转台转动180度的角度以将线缠绕在工件上。

24. 发明授权

US4902991A Radio frequency signal combining/sorting device 失效
标题翻译：射频信号组合/分选装置
公开(公告)号：US4902991A
公开(公告)日：1990-02-20
申请号：US166111
申请日：1988-03-10
申请人： Youhei Ishikawa , Hidekazu Wada , Koichi Takehara , Shigeji Arakawa , Toru Tanizaki
发明人： Youhei Ishikawa , Hidekazu Wada , Koichi Takehara , Shigeji Arakawa , Toru Tanizaki
IPC分类号： H01P1/213 , H01P5/103
CPC分类号： H01P5/103 , H01P1/2138
摘要： A radio frequency signal combining/sorting device which includes a plurality of filters, and a duplexer device connected to one side of input/output sides of each of the filters for combining/sorting signals, and is characterized in that there is provided a coupling device formed at the input/output ends of the filter connected side of the duplexer means device, with the filters being formed, at their side connected to the duplexer device, with openings for receiving the coupling device.
摘要翻译：一种包括多个滤波器的射频信号组合/分类装置和连接到每个滤波器的输入/输出侧的一侧的双工器装置，用于组合/分类信号，其特征在于，提供一种耦合装置形成在双工器装置的滤波器连接侧的输入/输出端，滤波器在其连接到双工器装置的一侧形成有用于接收耦合装置的开口。

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