Amplitude stabilized oscillator circuit
    1.
    发明授权
    Amplitude stabilized oscillator circuit 失效
    振幅稳定振荡电路

    公开(公告)号:US5801592A

    公开(公告)日:1998-09-01

    申请号:US858611

    申请日:1997-05-21

    IPC分类号: H03C3/22 H03B5/12 H03L5/00

    摘要: An oscillator circuit is provided for stabilizing the amplitude of a HF oscillation of an audio signal. In such an oscillator circuit, an audio signal having a frequency in the range of 20 Hz . . . 20 kHz is coupled into the oscillator circuit, is modulated with a high frequency and is emitted in the form of an RF audio signal having a frequency of more than 2 MHz. Such an oscillator circuit is used for instance in an infrared transmitting unit, wherein a low frequency audio signal is transformed into a higher frequency infrared signal. The higher frequency audio signals are transmitted via infrared channel to an appropriate receiving unit--for instance to infrared head phones--which comprises a receiving unit having an appropriate demodulator and preferably also a stereo-decoder in order to reproduce the low frequency audio signals. The oscillator for stabilizing the amplitude of a high frequency oscillation comprises a resonant circuit which is coupled with a first transistor having a base terminal, an emitter contact, and a collector contact. The first transistor develops an output voltage at the emitter contact which is fed back into a base circuit of the first transistor. The collector contact of the first transistor is coupled to a supply voltage source. The supply voltage source is coupled to the base terminal of the first transistor via a resistor. The emitter contact of the first transistor is coupled with the base terminal of a second transistor. The second transistor has a collector contact which is connected to the base terminal of the first transistor for controlling the voltage at the base terminal of the first transistor.

    摘要翻译: 提供振荡器电路以稳定音频信号的HF振荡的幅度。 在这种振荡器电路中,具有频率在20Hz范围内的音频信号。 。 。 20kHz被耦合到振荡器电路中,以高频调制,并且以具有大于2MHz的频率的RF音频信号的形式发射。 这种振荡电路例如用在红外发射单元中,其中低频音频信号被变换成较高频率的红外信号。 较高频率的音频信号通过红外线通道传输到适当的接收单元,例如红外头戴式电话,其包括具有适当的解调器的接收单元,并且优选地也是立体声解码器,以便再现低频音频信号。 用于稳定高频振荡幅度的振荡器包括谐振电路,其与具有基极端子,发射极触点和集电极触点的第一晶体管耦合。 第一晶体管在发射极接触处产生一个反馈到第一晶体管的基极电路中的输出电压。 第一晶体管的集电极触点耦合到电源电压源。 电源电压源通过电阻耦合到第一晶体管的基极端子。 第一晶体管的发射极接触与第二晶体管的基极耦合。 第二晶体管具有集电极触点,其连接到第一晶体管的基极端子,用于控制第一晶体管的基极端子处的电压。

    Footwear outer sole
    2.
    发明授权
    Footwear outer sole 失效
    鞋外底

    公开(公告)号:US4141158A

    公开(公告)日:1979-02-27

    申请号:US782376

    申请日:1977-03-29

    IPC分类号: A43B13/22 A43B13/04 A43C15/00

    CPC分类号: A43B13/223

    摘要: A profiled outer sole for shoes made of a material having rubber-elastic properties with the sole including a tread surface having a front tread end portion, rear tread end portion, a profiled middle area and profiled marginal areas arranged on respective sides of the middle area. The front tread end portion, the rear tread end portion and each of the marginal areas include outer edges adjoining the tread surface to a shell rim of the outer sole with each of the outer edges being rounded with a predetermined radius. The marginal areas define foundation strips having spaced block-shaped profiled projections enclosing box-shaped profiled projections with a number of groove-shaped slots being substantially uniformly distributed along each of the foundation strips.

    摘要翻译: 一种用于具有橡胶弹性的材料制成的用于鞋底的鞋底外底,鞋底包括具有前胎面端部,后胎面端部,异型中间区域和布置在中间区域的相应侧面上的异形边缘区域的胎面表面 。 前胎面端部,后胎面端部和每个边缘区域包括与胎面相邻的外边缘到外底的外壳边缘的外边缘,其中每个外边缘以预定的半径圆化。 边缘区域限定具有间隔开的块状异形突起的基底条,其围绕箱形异形突起,其中多个槽形槽沿着每个基础条带基本上均匀分布。

    Bag-type package to be torn for easy access to the product
    3.
    发明授权
    Bag-type package to be torn for easy access to the product 有权
    袋式包装被撕裂,方便进入产品

    公开(公告)号:US06309104B1

    公开(公告)日:2001-10-30

    申请号:US09242836

    申请日:1999-08-31

    IPC分类号: B65D6524

    CPC分类号: B65D75/58

    摘要: A sachet-shaped tear-open package for rapid access to a packaged product, having at least one sealed seam with a weakening in the form of a notch or groove as a tearing aid, whereby the weakening has an additional gripping and opening aid in the form of at least one punch-out, aperture, embodied next to the weakening, is characterized in that a rim of the punch-out has an at least partially serrated contour.

    摘要翻译: 一种用于快速进入包装产品的小袋形撕开包装,具有至少一个密封接缝,其具有作为撕裂助剂的凹口或凹槽形式的弱化,由此弱化在其中具有额外的夹持和开启辅助 形成在弱化附近的至少一个穿孔,孔的形式的特征在于,冲头的边缘具有至少部分锯齿状的轮廓。

    Outer sole for shoe especially sport shoes as well as shoes provided
with such outer sole
    4.
    发明授权
    Outer sole for shoe especially sport shoes as well as shoes provided with such outer sole 失效
    特别是运动鞋的鞋底以及外底鞋

    公开(公告)号:US4161828A

    公开(公告)日:1979-07-24

    申请号:US863088

    申请日:1977-12-22

    摘要: A profiled outer sole for shoes, especially sport shoes, made in a mold and consisting of rubber or other material having rubber-elastic properties, which is provided with profiled projections laterally delimiting the tread surface of the outer sole; the profiled projections, in turn, are provided with groove-shaped slots extending obliquely to the respective tangential plane tangential to the outer boundary surfaces of the individual profiled projections within the bisecting plane thereof.

    摘要翻译: 一种用于鞋子,特别是运动鞋的成型外底,其在模具中制成并由具有橡胶弹性的橡胶或其它材料组成,其具有横向限定外底的胎面的成型突起; 异形突起又设置有槽形槽,其倾斜地延伸到在其平分平面内的各个成形突起的外边界面切线的相应切平面。

    Time-keeping device, especially a quartz-controlled clock
    6.
    发明授权
    Time-keeping device, especially a quartz-controlled clock 失效
    计时装置,特别是石英控制时钟

    公开(公告)号:US4417820A

    公开(公告)日:1983-11-29

    申请号:US358934

    申请日:1982-03-17

    CPC分类号: G04C3/14

    摘要: Electronic clocks with analog time displays and a vibrating quartz crystal (1) as a time standard, as well as electronic frequency dividers (6, 7). The display elements are driven by an electronically controlled motor (SM), said motor comprising a power winding (87) and a control winding (68). The control and regulating circuit for the electronically controlled motor (SM) is so designed that only one rpm above the rated rpm is controllably adjustable and, when the frequency of the clock varies, correcting signals are supplied to the AC drive pulses in power winding (87) through a bistable flip-flop (50), said flip-flop being subjected to real pulses derived from frequency dividers (6,7) and pulses derived from motor (SM), a NOR element (58) connected to the output of flip-flop (50) and an additional frequency divider (59), a field effect transistor (88), and a resistor (89). These correction signals increase the amplitude of the electrical drive signal, applied to power winding (87), and accelerate motor (SM) to the maximum set rpm. The invention can be used in time-keeping devices, especially quartz-controlled clocks, with maximally constant frequency.

    摘要翻译: 具有模拟时间显示的电子时钟和作为时间标准的振动石英晶体(1),以及电子分频器(6,7)。 显示元件由电子控制电动机(SM)驱动,所述电动机包括功率绕组(87)和控制绕组(68)。 用于电子控制电动机(SM)的控制和调节电路被设计成只有高于额定转速的转速可以可控地调节,并且当时钟频率变化时,校正信号被提供给功率绕组中的交流驱动脉冲 87)通过双稳态触发器(50),所述触发器受到来自分频器(6,7)的实脉冲和从电机(SM)导出的脉冲,NOR元件(58)连接到 触发器(50)和附加分频器(59),场效应晶体管(88)和电阻器(89)。 这些校正信号增加施加到功率绕组(87)上的电驱动信号的幅度,并将马达(SM)加速到最大设定rpm。 本发明可以用于具有最大恒定频率的计时装置,特别是石英控制时钟。

    Strip-type door
    7.
    发明授权
    Strip-type door 失效
    带状门

    公开(公告)号:US4388961A

    公开(公告)日:1983-06-21

    申请号:US227409

    申请日:1981-01-22

    CPC分类号: E06B3/80

    摘要: A strip-type door having a plurality of individual strips arranged in overlapped relationship one to another comprises a series of swingable supports on which the individual strips are vertically suspended when the latter take a vertical position. A mounting element connected to a lintel over the door opening has a mounting portion, a supporting bar and an arcuate wall defining an arcuate channel. Each of the supports is formed with a curved portion insertable into the channel in the mounting element to form with this wall a hinge about which the supports carrying the individual strips can swing relative to the mounting element between a plurality of positions. The curved end portion may be inserted into said channel in only one of these positions so that the inadvertent falling or removal of the supports out of the channel when the strips are in their working swingable positions is prevented.

    摘要翻译: 具有多个彼此重叠的多个条带的带状门包括一系列可摆动的支撑件,当所述单个条带处于垂直位置时,所述单个条带垂直悬挂在该支架上。 连接到门开口上的楣板的安装元件具有安装部分,支撑杆和限定弓形通道的弓形壁。 每个支撑件形成有可插入到安装元件中的通道中的弯曲部分,以与该壁形成铰链,支撑承载各个条的支撑件可围绕该铰链相对于安装元件在多个位置之间摆动。 弯曲的端部可以仅在这些位置中的一个中插入到所述通道中,使得防止当条带处于其工作摆动位置时,不期望地从通道中掉出或移除支撑件。

    Receiver circuit for an echo-sounding system
    8.
    发明授权
    Receiver circuit for an echo-sounding system 失效
    用于回声探测系统的接收器电路

    公开(公告)号:US4245332A

    公开(公告)日:1981-01-13

    申请号:US029179

    申请日:1979-04-12

    申请人: Horst Schaefer

    发明人: Horst Schaefer

    IPC分类号: G01S7/527 G01S15/02

    CPC分类号: G01S7/527

    摘要: An echo-sounding receiver circuit comprising first and second receiver channels and an AND gate enabled by simultaneous outputs from both receiver channels is disclosed. The first receiver channel includes an echo stacking circuit, an echo selection circuit, and a tracking window circuit for establishing a measuring range or window whose timing is determined in part by detection of the first primary target echo in a sounding period and whose duration is established by the tracking window circuit. The second receiver channel includes a tracking threshold circuit and a second echo selection circuit for detecting the first echo that exceeds an amplitude determined by the amplitude of the preceding primary target echo. Upon detection of a primary echo by the second channel during the window established by the first channel, the AND gate supplies an output signal to a recording instrument or other utilization device.

    摘要翻译: 公开了一种回声探测接收机电路,包括第一和第二接收机通道以及由两个接收机通道的同时输出使能的与门。 第一接收机通道包括回波叠加电路,回波选择电路和跟踪窗口电路,用于建立测量范围或窗口,其定时部分地通过在探测周期中检测到第一主要目标回波而确定其持续时间 通过跟踪窗口电路。 第二接收机信道包括跟踪阈值电路和第二回波选择电路,用于检测超过由先前主要目标回波振幅确定的振幅的第一回波。 在由第一通道建立的窗口期间,当通过第二通道检测到主回波时,与门将输出信号提供给记录仪器或其他利用装置。