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1. 发明授权

US4469539A Process for continuous production of a multilayer electric cable 失效
标题翻译：连续生产多层电缆的方法
公开(公告)号：US4469539A
公开(公告)日：1984-09-04
申请号：US506584
申请日：1983-06-22
申请人： Robert M. Wade , George N. Benjamin , Marwick H. Solomon , Daniel H. Jessop
发明人： Robert M. Wade , George N. Benjamin , Marwick H. Solomon , Daniel H. Jessop
IPC分类号： H01B1/24 , H01B13/14
CPC分类号： H01B1/24 , H01B13/141 , H01B13/145 , H01B13/148 , Y10T156/109 , Y10T428/2947
摘要： An improved multilayer electric cable is disclosed having a conductive core, an extruded strand shield (ESS) layer, an insulating layer of polymeric insulation material surrounding the core and coaxial therewith, a semiconductive insulation shield (EIS) layer strippably bonded to the insulation layer surrounding it and coaxial therewith and, preferably, a plurality of axially extending drain wires disposed within the semiconductive EIS layer. The semiconductive EIS layer is formed of a copolymer of an ethylene/acrylate/monoalkyl ester of 1,4-butenedioic acid copolymer, conductive carbon black, a peroxide curing agent and polyethylene or polyethylene copolymer. The semiconductive EIS layer is applied by extrusion at elevated temperature in a dry gas atmosphere. Such dry processing conditions are sufficiently severe that the copolymer of ethylene/acrylate/ester can reliably serve as a suitable basis for the semiconductive EIS layer, since other conventional semiconductive compositions are susceptible to being adversely affected by the severe conditions of dry processing.
摘要翻译：公开了一种改进的多层电缆，其具有导电芯，挤出线屏蔽（ESS）层，围绕芯并与其同轴的聚合物绝缘材料的绝缘层，可剥离地结合到绝缘层周围的半导体绝缘屏蔽（EIS）层并且优选地，设置在半导体EIS层内的多个轴向延伸的漏极线。半导体EIS层由1,4-丁烯二酸共聚物的乙烯/丙烯酸酯/单烷基酯，导电炭黑，过氧化物固化剂和聚乙烯或聚乙烯共聚物的共聚物形成。半导体EIS层通过在干燥气体气氛中在升高的温度下挤出来施加。这种干燥加工条件足够严重，使得乙烯/丙烯酸酯/酯的共聚物可以可靠地用作半导体EIS层的合适基础，因为其它常规的半导体组合物易受到干法处理的苛刻条件的不利影响。

2. 发明授权

US4406004A Ring scheduling apparatus for a digital multiplexed telecommunication system 失效
标题翻译：用于数字多路复用电信系统的环调度装置
公开(公告)号：US4406004A
公开(公告)日：1983-09-20
申请号：US204298
申请日：1980-11-05
申请人： Jay D. Hall , Theodore M. Stump , Charles W. Thode
发明人： Jay D. Hall , Theodore M. Stump , Charles W. Thode
IPC分类号： H04M3/02 , H04M19/02 , H04Q5/02 , H04Q11/04 , H04J3/12 , H04Q5/08
CPC分类号： H04Q5/02 , H04M19/023 , H04Q11/04
摘要： A ring scheduling apparatus for use in a digital multiplexed telephone communication system. The apparatus utilizes a controller which sorts messages indicating which telephone lines are being rung and what frequency and DC signal level are required to ring the lines. The messages are sorted into voltage and frequency compatible groups, and then digital data is sent to a ring signal generating circuit to control the frequency of the ring signal generated and the polarity of the DC signal upon which the ring signal is superimposed. Disclosure of a multiplexer and line interface circuitry for use in this system is included as well as a self-test circuit for testing the audio circuitry of idle telephone lines.
摘要翻译：一种用于数字多路复用电话通信系统的环形调度装置。该装置利用一种控制器，该控制器分类指示哪些电话线正在进行的消息以及需要什么频率和DC信号电平来振铃线路。将消息分为电压和频率兼容组，然后将数字数据发送到振铃信号发生电路，以控制所产生的振铃信号的频率和重叠振铃信号的直流信号的极性。还包括用于该系统的复用器和线路接口电路的公开以及用于测试空闲电话线的音频电路的自检电路。

3. 发明授权

US4393491A Automatic self-test system for a digital multiplexed telecommunication system 失效
标题翻译：用于数字多路复用电信系统的自动自检系统
公开(公告)号：US4393491A
公开(公告)日：1983-07-12
申请号：US204300
申请日：1980-11-05
申请人： Robert L. Ashlock , Carl E. Gabrielson , Douglas P. Kerr , David J. Rasmussen , Theodore M. Stump , Charles W. Thode
发明人： Robert L. Ashlock , Carl E. Gabrielson , Douglas P. Kerr , David J. Rasmussen , Theodore M. Stump , Charles W. Thode
IPC分类号： H04M3/22 , H04Q1/20 , H04Q11/04 , H04J3/00
CPC分类号： H04Q11/04 , H04M3/303
摘要： An automatic self-test apparatus for use in a digital multiplexed communication system and self-testing idle circuitry coupled to idle telephone lines. The apparatus utilizes a tone generator which generates digital words describing an analog test signal and a detector which detects digital data on the internal data bus which describes this self-test analog signal. The data from the tone generator is coupled to the circuitry connected to the idle line through a time division multiplexer under the control of a controller consisting of a programmed microprocessor. The microprocessor controls when the transfer is made and to which telephone line it is directed. This control is accomplished by writing a control word to a multiplexer naming the source and destination for the transfer and the time slot in which it is to occur. When the circuitry connected to the idle line functions properly, the controller proceeds to the next idle line. If a malfunction is detected, the controller sets an alarm.
摘要翻译：一种用于数字多路复用通信系统的自动自检装置和耦合到空闲电话线路的自检空闲电路。该装置使用产生描述模拟测试信号的数字字的音调发生器和检测描述该自检模拟信号的内部数据总线上的数字数据的检测器。来自音调发生器的数据在由编程的微处理器组成的控制器的控制下通过时分复用器耦合到连接到空闲线路的电路。微处理器控制何时进行传输以及其所针对的电话线路。该控制通过将控制字写入多路复用器来实现，该多路复用器命名用于传送的源和目的地以及其发生的时隙。当连接到空闲线路的电路正常工作时，控制器进入下一条空闲线路。如果检测到故障，控制器将发出报警。

4. 发明授权

US4278843A Two-way amplifier arrangement 失效
标题翻译：双向放大器布置
公开(公告)号：US4278843A
公开(公告)日：1981-07-14
申请号：US635239
申请日：1975-11-25
申请人： Alfred M. Hestad
发明人： Alfred M. Hestad
IPC分类号： H04M3/40 , H04M3/56 , H04Q3/00
CPC分类号： H04M3/40 , H04M3/56 , H04Q3/00
摘要： A two-way amplifier arrangement which automatically controls current flowing in the transmission circuits to maintain that current at a fixed level. The two-way amplifier arrangement finds utility as a conference amplifier and as a two-way trunk amplifier.
摘要翻译：一种双向放大器装置，其自动控制在传输电路中流动的电流以将该电流保持在固定电平。双向放大器布置可用作会议放大器和双向中继放大器。

5. 发明授权

US4469538A Process for continuous production of a multilayer electric cable and materials therefor 失效
标题翻译：连续生产多层电缆及其材料的方法
公开(公告)号：US4469538A
公开(公告)日：1984-09-04
申请号：US468777
申请日：1983-02-22
申请人： Robert M. Wade , George N. Benjamin , Marwick H. Solomon , Daniel H. Jessop
发明人： Robert M. Wade , George N. Benjamin , Marwick H. Solomon , Daniel H. Jessop
IPC分类号： H01B1/24 , H01B13/14
CPC分类号： H01B13/145 , H01B1/24 , H01B13/141 , H01B13/148 , Y10T156/109 , Y10T428/2947
摘要： An improved multilayer electric cable is disclosed having a conductive core, an extruded strand shield (ESS) layer, an insulating layer of polymeric insulation material surrounding the core and coaxial therewith, a semi-conductive insulation shield (EIS) layer strippably bonded to the insulation layer surrounding it and coaxial therewith and, preferably, a plurality of axially extending drain wires disposed within the semiconductive EIS layer. The semi-conductive EIS layer is formed of a copolymer of an ethylene/alkylacrylate/monoalkyl ester of 1,4-butenedioic acid copolymer, conductive carbon black, and a peroxide curing agent and preferably also a copolymer of ethylene and propylene or a copolymer of ethylene, propylene and an unconjugated diene. The semi-conductive EIS layer is applied by extrusion at elevated temperature in a dry gas atmosphere. Such dry processing conditions are sufficiently severe that the copolymer of ethylene/acrylate/ester can reliably serve as a suitable basis for the semi-conductive EIS layer, since other conventional semi-conductive compositions are susceptible to being adversely affected by the severe conditions of dry processing.
摘要翻译：公开了一种改进的多层电缆，其具有导电芯，挤出线束屏蔽层（ESS）层，围绕芯并与其同轴的聚合物绝缘材料的绝缘层，可剥离地结合到绝缘体上的半导体绝缘屏蔽（EIS）层并且优选地，设置在半导体EIS层内的多个轴向延伸的漏极线。半导电性EIS层由1,4-丁烯二酸共聚物的乙烯/丙烯酸烷基酯/单烷基酯，导电性炭黑和过氧化物固化剂的共聚物形成，优选也可以是乙烯与丙烯的共聚物或共聚物乙烯，丙烯和非共轭二烯。半导电EIS层通过在干燥气体气氛中在升高的温度下挤出来施加。这种干燥处理条件足够严重，使得乙烯/丙烯酸酯/酯的共聚物可以可靠地用作半导电EIS层的合适基础，因为其它常规的半导体组合物易受严重的干燥条件的不利影响处理。

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