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公开(公告)号：US4292477A
公开(公告)日：1981-09-29
申请号：US78674
申请日：1979-09-25
申请人： William J. Adams , Steve W. Haskins
发明人： William J. Adams , Steve W. Haskins
IPC分类号： H04M1/02
CPC分类号： H04M1/0297
摘要： A telephone set base, for both wall and desk top mounting, has an elongate plastic molded base plate and a top housing. To improve stability a flat metal weight is positioned on the base plate and is spaced a small distance from the base plate to form an acoustic chamber. A speaker is mounted on the weight. A printed circuit board is mounted over the weight and modular jacks are attached to a flexible circuit member which connects to the printed circuit board, speaker, and other items. Recesses are formed in the base plate to provide for alternative arrangements of line cords and plug-in mounting on a wall. Slots in the base plate provide access to the recesses for cords entering at the ends of the base plate. A battery housing is provided.
摘要翻译： 一个电话机底座，用于墙壁和桌面安装，都有一个细长的塑料模制基板和一个顶部的外壳。 为了提高稳定性，平板金属重量位于基板上并且与基板隔开一小段距离以形成声室。 扬声器安装在重量上。 印刷电路板安装在重量上，并且模块插座附接到连接到印刷电路板，扬声器和其它物品的柔性电路部件。 凹槽形成在基板中，以提供线路的替代布置和插入式安装在墙壁上。 基板上的槽可以进入进入底板端部的电线的凹槽。 提供电池壳体。
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公开(公告)号：US4286835A
公开(公告)日：1981-09-01
申请号：US171178
申请日：1980-07-22
CPC分类号： H01R12/675 , H01R12/62 , H01R24/62 , H01R4/242
摘要： A modular telephone connector for use in providing connection of a telephone to both telephone lines and a separate power source, has a bottom member for fastening to a wall or other member at a required telephone position and a top assembly which attaches to the bottom member with a flat cable gripped between. On attachment of the top assembly to the bottom member, insulation piercing terminals pierce the cable and make contact with conductors in the cable. The top assembly includes a circuit board having conductor patterns to which the insulation piercing terminals are connected, and also to which are connected terminals from a modular jack, or jacks, mounted in the top assembly. A cover clips over top assembly and bottom member.
摘要翻译： 用于将电话连接到电话线和独立电源的模块化电话连接器具有用于在所需电话位置处紧固到墙壁或其他构件的底部构件以及附接到底部构件的顶部组件， 一根扁平的电缆夹在其间。 在顶部组件附接到底部构件时，绝缘穿刺端子刺穿电缆并与电缆中的导体接触。 顶部组件包括具有导体图案的电路板，绝缘穿刺端子连接到该电路板，并且还安装在顶部组件中的来自模块化插座或插座的连接端子连接到电路板。 一个盖子夹在顶部组件和底部构件上。
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公开(公告)号：US4284855A
公开(公告)日：1981-08-18
申请号：US68584
申请日：1979-08-22
IPC分类号： H04M1/02
CPC分类号： H04M1/02 , H04M1/0297
摘要： An adaptable telephone baseplate can be used for either wall mounting or desk or table top mounting. The baseplate has an enclosed recess at an intermediate position and a modular jack position at what would be the top edge when wall mounted. A slot connects the jack position and enclosed recess. When wall mounted a short cord can be inserted in the slot with a plug at one end being inserted in the jack at the jack position and a plug at the other end being in the recess for insertion into a wall jack. When desk mounted a normal line cord enters through a groove into the jack position for insertion of a plug into a jack. Alternatively a line cord can enter through the groove, extend along the slot and then pass up through the slot for hard wiring of the conductors to a circuit board. Snap-in mountings are provided for the jack, a circuit board, ringer and possibly other items. For some telephones a battery housing can be provided while in others the battery housing can be omitted, by the alternative use of two inserts in the mold for the baseplate.
摘要翻译： 可适用电话底座可用于墙壁安装或桌面安装。 底板在中间位置有一个封闭的凹槽，在墙壁安装时，顶部边缘将是一个模块插座位置。 插槽连接插孔位置和封闭的凹槽。 当墙壁安装的短绳可以插入槽中时，其一端的插头插入插座位置的插孔中，另一端的插头位于凹槽中，用于插入墙壁插座。 当桌面安装的正常线路线通过凹槽进入插座位置，以将插头插入插孔。 或者，线缆可以通过槽进入，沿着槽延伸，然后向上通过槽，用于将导体的硬布线连接到电路板。 插孔安装用于插孔，电路板，振铃器和可能的其他项目。 对于一些电话，可以提供电池壳体，而在其他电话机中，可以通过替代地使用用于底板的模具中的两个插入件来省略电池壳体。
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公开(公告)号：US4165450A
公开(公告)日：1979-08-21
申请号：US906914
申请日：1978-05-17
摘要： Telephone signalling test apparatus is provided for monitoring telephone lines under live traffic conditions. The apparatus is modular with a main frame having a line interface and central control and storage unit, as well as numerical display.
摘要翻译： 提供电话信号测试装置，用于监控实时交通状况下的电话线路。 该装置是模块化的，主框架具有线路接口和中央控制和存储单元，以及数字显示。
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公开(公告)号：US4001559A
公开(公告)日：1977-01-04
申请号：US532746
申请日：1974-12-16
CPC分类号： H04M3/32
摘要： A communications line under test intercouples programmable local units, one of which transmits an analog waveform to the other in response to digital control signals received from a computer. The receiving programmable local unit transmits a digital signal to the computer representative of the received analog signal to thereby enable the computer to determine transmission characteristics of the communications line intercoupling the programmable local units.
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公开(公告)号：US4511936A
公开(公告)日：1985-04-16
申请号：US381401
申请日：1982-05-24
申请人： Dewey M. Sims, Jr.
发明人： Dewey M. Sims, Jr.
IPC分类号： G11B15/07 , G11B15/02 , G11B15/04 , G11B15/06 , G11B15/08 , G11B15/16 , G11B15/17 , G11B15/675 , G11B15/18
摘要： A switch assembly is provided for a tape drive adapted to receive a tape cartridge. The assembly comprises a housing, first and second switches fixedly mounted on the housing, and first and second plungers mounted for reciprocal movement on the housing to actuate the first and second switches, respectively. The housing includes three orthogonal reference surfaces, all of which engage the tape drive to locate the assembly in proper relationship to the tape drive. The plungers are responsive to the tape cartridge to actuate the first switch when the tape cartridge is properly mounted on the drive and to actuate the second switch when the tape cartridge is not write-protected. The assembly may include a light source and a light-responsive switch which, together with a reflector in the tape cartridge, cooperate to detect position-indicating tape apertures.
摘要翻译： 为适于接收带盒的带驱动器提供开关组件。 组件包括壳体，固定地安装在壳体上的第一和第二开关，以及安装成用于在壳体上往复运动以分别驱动第一和第二开关的第一和第二柱塞。 壳体包括三个正交参考表面，所有参考表面都与磁带机接合，以将组件定位成与磁带驱动器适当的关系。 当磁带盒正确地安装在驱动器上时，柱塞响应磁带盒来致动第一开关，并且当磁带盒不被写保护时致动第二开关。 组件可以包括光源和光响应开关，其与带盒中的反射器一起协作以检测位置指示带孔。
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公开(公告)号：USD276429S
公开(公告)日：1984-11-20
申请号：US329945
申请日：1981-12-11
申请人： Evans H. Pridgen
设计人： Evans H. Pridgen
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公开(公告)号：US4443758A
公开(公告)日：1984-04-17
申请号：US253069
申请日：1981-04-10
申请人： Charles A. P. Kelly
发明人： Charles A. P. Kelly
摘要： A coupling circuit for coupling a printer to a meter permits single line digital printout of metered data in response to operation of a manual switch. Printing is initiated when a bistable occupies one state and a print command is produced by the meter indicating that a stable voltage has been detected by the meter. That bistable state is produced by manual operation of a switch, such operation also triggering a hold unit within the meter to hold the stable reading for a period permitting data to be shifted to the printer and for printing to occur. While printing and paper advance is under way, the printer delivers a busy signal to the bistable to change its state. Subsequent state reversal can then only take place on manually operating the switch once again. In this way only a single line of print is achieved on command. The particular logic arrangement described prevents erroneous printing of lines of data in response to switch contact bounce.
摘要翻译： 用于将打印机耦合到仪表的耦合电路允许响应于手动开关的操作而对计量数据进行单行数字打印输出。 当双稳态占据一个状态并且由仪表产生打印命令时，启动打印，指示仪表已检测到稳定的电压。 该双稳态由开关的手动操作产生，这样的操作也触发仪表内的保持单元以保持稳定的读数一段允许将数据移动到打印机并进行打印的期间。 当打印和纸张提前进行时，打印机向双稳态提供忙碌信号以更改其状态。 随后的状态反转只能在手动操作开关上再次发生。 以这种方式，只有一行打印才能实现。 所描述的特定逻辑布置防止响应于开关接触反弹而错误地打印数据行。
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公开(公告)号：US4307305A
公开(公告)日：1981-12-22
申请号：US110474
申请日：1980-01-08
申请人： Darryl C. Morris
发明人： Darryl C. Morris
CPC分类号： G01R19/22 , H02M7/217 , H02M7/2173
摘要： A precision rectifier circuit includes two differential amplifiers each having a negative feedback path including a diode. Two pnp transistors have their base-emitter paths connected in parallel with the respective diodes and their collectors connected together and via an output resistor to ground. An a.c. signal to be rectified is applied to non-inverting inputs of the amplifiers, whose inverting inputs are interconnected via a resistor in series with a capacitor, to develop a unipolar output voltage across the output resistor. The capacitor renders the output voltage independent of input offset voltages of the amplifiers. The transistors can comprise Darlington-connected transistors to avoid the need for matching.
摘要翻译： 精密整流电路包括两个差分放大器，每个差分放大器具有包括二极管的负反馈路径。 两个pnp晶体管的基极 - 发射极路径与相应的二极管及其集电极并联连接在一起并通过输出电阻接地。 一个 要整流的信号被施加到放大器的非反相输入，其反相输入通过与电容器串联的电阻器互连，以在输出电阻器两端产生单极性输出电压。 电容器使输出电压独立于放大器的输入失调电压。 晶体管可以包括达林顿连接的晶体管，以避免匹配的需要。
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公开(公告)号：US4293887A
公开(公告)日：1981-10-06
申请号：US36088
申请日：1979-05-04
申请人： Frank G. Splitt , Donald B. Turner
发明人： Frank G. Splitt , Donald B. Turner
CPC分类号： H01T1/20
摘要： A gas filled surge arrester having improved impulse ratio, characterized by an ion source in an electric field outside of the spark gap.
摘要翻译： 具有改善的脉冲比的气体填充的避雷器，其特征在于在火花间隙外的电场中的离子源。
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