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    • 1. 发明授权
    • VHF Television tuner circuit with supression of undesired signals
    • VHF电视调谐器电路,具有抑制不需要的信号
    • US4207549A
    • 1980-06-10
    • US910890
    • 1978-05-30
    • Katsuo ItoKazuo Kontani
    • Katsuo ItoKazuo Kontani
    • H04B1/18H03J5/24H03J5/28H04B1/26H03J5/00
    • H03J5/28
    • A VHF television tuner circuit is adapted for selecting a channel from a plurality of VHF television channels and a UHF/VHF converted television channel, by mechanical selection to form a resonant circuit having electrical characteristics corresponding to the selected channel. The tuner circuit is coupled to a VHF television signal terminal and a UHF/VHF converted television signal terminal. The tuner circuit comprises a channel selection means including a first switch and a second switch each comprising movable contacts fixedly positioned on a channel selection shaft and stationary contacts corresponding to the selectable channel positions and positioned in proximity to the movable contacts for coaction therewith. The first switch comprises a movable/stationary contact combination positioned in the vicinity of the VHF television signal terminal and responsive to selection of the UHF/VHF converted channel position for being grounded for electrostatically shielding the VHF television signal terminal. The second switch comprises a movable/stationary contact combination responsive to selection of the UHF/VHF converted channel position for connecting the UHF/VHF converted television signal terminal to the radio frequency amplifier.
    • VHF电视调谐器电路适于通过机械选择来选择来自多个VHF电视频道和UHF / VHF转换电视频道的频道,以形成具有对应于所选频道的电气特性的谐振电路。 调谐器电路耦合到VHF电视信号终端和UHF / VHF转换的电视信号终端。 调谐器电路包括通道选择装置,其包括第一开关和第二开关,每个开关包括固定地定位在通道选择轴上的可动触点和对应于可选择通道位置的固定触点,并且定位在靠近可移动触点处以与之配合。 第一开关包括位于VHF电视信号端子附近的可移动/固定触点组合,并响应于UHF / VHF转换通道位置的选择而被接地以静电屏蔽VHF电视信号终端。 第二开关包括响应于选择用于将UHF / VHF转换的电视信号终端连接到射频放大器的UHF / VHF转换的信道位置的可移动/固定接触组合。
    • 2. 发明授权
    • Fine adjusting mechanism for preset type tuner
    • 预置式调谐器微调机构
    • US4532485A
    • 1985-07-30
    • US560760
    • 1983-12-12
    • Katsuo ItoKazunori YoshimuraKazuhiro TsujiKazuo Kontani
    • Katsuo ItoKazunori YoshimuraKazuhiro TsujiKazuo Kontani
    • H03J1/14H03J5/28
    • H03J5/28Y10T74/19516
    • An improved fine adjusting mechanism for a preset type tuner, which is so arranged that, with a ring having cam portions being fitted under pressure onto a fine adjusting shaft of a tuner for simultaneous rotation with it and also for slippage with respect to the fine adjusting shaft against a torque larger than a predetermined extent, a lever having a transmission gear rotatably mounted on it is urged by a spring force so that its actuating projections are held in pressure contact with the cam surface of the ring with the cam portions, so that rotation of the fine adjusting shaft is converted into a pivotal movement of the lever through the ring so as to positively engage the transmission gear with each of gears having threaded portions for an efficient local oscillation frequency adjustment.
    • 一种用于预设型调谐器的改进的微调机构,其被布置成使得具有凸轮部分的环被压配合到调谐器的微调轴上以与之同时旋转并且还用于相对于微调 轴的扭矩大于预定范围,具有可旋转地安装在其上的传动齿轮的杆被弹簧力推动,使得其致动突起与凸轮部分与环的凸轮表面保持压力接触,使得 细调节轴的旋转被转换成杠杆通过环的枢转运动,以便使传动齿轮与每个具有用于有效的本地振荡频率调节的螺纹部分的齿轮啮合。
    • 3. 发明授权
    • Rotary switch
    • 旋转开关
    • US4206326A
    • 1980-06-03
    • US907849
    • 1978-05-19
    • Katsuo ItoKazunori YoshimuraKazuo KontaniBunjiro Murata
    • Katsuo ItoKazunori YoshimuraKazuo KontaniBunjiro Murata
    • H01H19/08H01H19/02
    • H01H19/08
    • The present invention relates to a rotary switch which is an improved stator provided with a plurality of projections extending outwardly from its edges to confront the corresponding surfaces of an improved chassis or the like to which the stator is to be secured. The improved chassis is formed, in positions corresponding to the positions of the projections of the stator, with openings or cutout portions each having a claw which can be deformed or bent. By bending the claws toward the projections after inserting the projections into the openings in the chassis, the projections of the stator are firmly held between the chassis and the claws and rigidly secure the stator to the chassis.
    • 旋转开关技术领域本发明涉及一种旋转开关,其是改进的定子,其设置有从其边缘向外延伸的多个突起,以面对将被固定到该定子的改进的底盘或类似物的对应表面。 改进的底盘形成在与定子的突起的位置相对应的位置,每个开口或切口部分都具有可以变形或弯曲的爪。 通过在将突起插入底架的开口中之后将爪弯曲成突起,定子的突起牢固地保持在底座和爪之间,并将定子刚性地固定到底架上。