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1. 发明授权

US4910998A Fluid detection system and method having a coaxial cable with solid, stranded dielectric elements 失效
标题翻译：流体检测系统和方法具有同轴电缆，具有固体，绞合介质元件
公开(公告)号：US4910998A
公开(公告)日：1990-03-27
申请号：US45887
申请日：1987-05-01
申请人： Frank R. Willis , Sitaram Rampalli , Vijay K. Chopra , Robert D. Perelman
发明人： Frank R. Willis , Sitaram Rampalli , Vijay K. Chopra , Robert D. Perelman
IPC分类号： G01N27/02 , G01M3/04 , G01M3/16 , G01N27/07
CPC分类号： G01M3/045 , G01M3/165
摘要： A fluid detection system includes a cable which is capable of being dried easily after coming into contact with the fluid being detected and displays a measurable change in characteristic impedance immediately upon contact with the fluid. The cable comprises an inner conductor and a cylindrical outer conductor disposed in a substantially parallel and coaxial relationship with each other with a dielectric detection layer coaxially disposed between the inner and outer conductors. The outer conductor is of an open braided construction which permits easy passage therethrough of the fluid to be detected. The detection layer comprises a pair of solid dielectric elements stranded around the inner conductor in a double helical configuration and defining an air gap between the two conductors which is adapted to retain the fluid so as to measurably change the characteristic impedance of the cable. A coating of dielectric material is provided around the solid inner conductor, the thickness of which can be controlled to adjust the change in characteristic impedance resulting from the presence of fluid within the dielectric layer. The improved cable construction allows the dielectric layer to be dried quickly even after the cable has been immersed in the fluid so that successive fluid detection measurements may be made without delay.

2. 发明授权

US06831231B2 Coaxial cable with flat outer conductor 失效
标题翻译：同轴电缆带扁平外导体
公开(公告)号：US06831231B2
公开(公告)日：2004-12-14
申请号：US10192205
申请日：2002-07-10
申请人： Robert D. Perelman , Robert C. Srubas , Kevin Moyher
发明人： Robert D. Perelman , Robert C. Srubas , Kevin Moyher
IPC分类号： H01B718
CPC分类号： H01B11/1826 , H01B11/183 , H01B11/1878
摘要： A flexible coaxial cable includes an inner conductor, and a dielectric layer generally surrounding the inner conductor. A tape outer conductor generally surrounds the dielectric layer, and does not underlie another electrically conductive layer such as a braided wire layer. The tape outer conductor may include a surface defining a plurality of indentations for minimizing damage to the tape outer conductor resulting from repeated flexing of the cable, and may define a plurality of apertures to enable generation of radiating waves during signal excitation of the cable.
摘要翻译：柔性同轴电缆包括内部导体和通常围绕内部导体的电介质层。带状外导体通常围绕电介质层，并且不在诸如编织线层之类的另一导电层的下面。带外导体可以包括限定多个凹口的表面，用于最小化由于电缆的反复弯曲而导致的带外导体的损坏，并且可以限定多个孔以使得能够在电缆的信号激励期间产生辐射波。

3. 发明授权

US06610931B2 Coaxial cable with tape outer conductor defining a plurality of indentations 失效
标题翻译：同轴电缆与带外导体限定多个凹口
公开(公告)号：US06610931B2
公开(公告)日：2003-08-26
申请号：US10004697
申请日：2001-12-05
申请人： Robert D. Perelman , Robert C. Srubas , Kevin Moyher
发明人： Robert D. Perelman , Robert C. Srubas , Kevin Moyher
IPC分类号： H01B1106
CPC分类号： H01B11/1878 , H01B11/1826 , H01B11/183
摘要： A flexible coaxial cable includes an inner conductor, and a dielectric layer generally surrounding the inner conductor. A tape outer conductor generally surrounds the dielectric layer, and does not underlie another electrically conductive layer such as a braided wire layer. The tape outer conductor includes a surface defining a plurality of indentations for minimizing damage to the tape outer conductor resulting from repeated flexing of the cable. The cable may include an insulating jacket generally surrounding the tape outer conductor.
摘要翻译：柔性同轴电缆包括内部导体和通常围绕内部导体的电介质层。带状外导体通常围绕电介质层，并且不在诸如编织线层之类的另一导电层的下面。带外导体包括限定多个凹口的表面，用于最小化由于电缆的反复弯曲导致的带外导体的损坏。电缆可以包括通常围绕带外导体的绝缘护套。

4. 发明授权

US4368350A Corrugated coaxial cable 失效
标题翻译：瓦楞同轴电缆
公开(公告)号：US4368350A
公开(公告)日：1983-01-11
申请号：US267901
申请日：1981-05-28
申请人： Robert D. Perelman
发明人： Robert D. Perelman
IPC分类号： C08J9/00 , C08J9/14 , H01B11/18 , H01B13/14
CPC分类号： C08J9/0061 , C08J9/144 , H01B11/1839 , H01B13/142 , C08J2327/12 , C08J2427/00 , Y10S264/13
摘要： An improved foamable dielectric composition comprising a melt extrudable perfluorocarbon resin containing therein (i) a polytetrafluoroethylene (PTFE) nucleating agent and (ii) a volatile blowing agent, preferably a lower fluorocarbon blowing agent having only one or two carbon atoms; a process for forming such a composition; and, products produced therewith. More specifically, a foamed melt extudable fluorinated ethylene-propylene (FEP) polymer containing therein a PTFE nucleating agent and blown to a foamed structure by means of a volatile fluid--e.g., a lower fluorocarbon such as fluoromethane or, preferably, fluoroethane, a process for forming such a foamed composition; and, products produced therewith such as jacketed electrical conductors and/or coaxial cables wherein at least one conductor is bonded to such a foamed melt extrudable resin. The foamed dielectric melt extrudable resin is characterized by its thermal stability, fire resistance, small closed cell structure, low density, and low insulating loss characteristics. In a preferred embodiment, the melt extrudable foamed resin comprises a perfluorocarbon polymer having a closed cellular structure with cells ranging from 10 to 40 mils., a density at least as low as 1.0 g./cc., and an insulation loss of less than 1.8 db/100 ft. at 1000 MHz.
摘要翻译：一种改进的可发泡介电组合物，包括其中含有可熔融挤出的全氟化碳树脂（i）聚四氟乙烯（PTFE）成核剂和（ii）挥发性发泡剂，优选仅具有一个或两个碳原子的低碳氟化合物发泡剂; 一种形成这种组合物的方法; 以及由此产生的产品。更具体地说，一种含有PTFE成核剂并通过挥发性流体例如氟代甲烷或优选氟代乙烷吹入发泡结构的发泡熔融可提纯的氟化乙烯 - 丙烯（FEP）聚合物，用于形成这样的发泡组合物; 以及由此产生的产品，例如夹套电导体和/或同轴电缆，其中至少一个导体与这种发泡熔融可挤出树脂结合。发泡电介质熔融挤出树脂的特征在于其热稳定性，耐火性，闭孔结构小，密度低，绝缘损耗低等特点。在优选的实施方案中，熔体可挤出发泡树脂包括具有封闭的细胞结构的全氟化碳聚合物，细胞范围为10至40密耳，密度至少低至1.0g / cc，绝缘损失小于在1000 MHz时为1.8 db / 100 ft。

5. 发明授权

US4304713A Process for preparing a foamed perfluorocarbon dielectric coaxial cable 失效
标题翻译：制备泡沫全氟碳电介质同轴电缆的方法
公开(公告)号：US4304713A
公开(公告)日：1981-12-08
申请号：US125859
申请日：1980-02-29
申请人： Robert D. Perelman
发明人： Robert D. Perelman
IPC分类号： C08J9/00 , C08J9/14 , H01B11/18 , H01B13/14 , B29D27/00
CPC分类号： C08J9/0061 , C08J9/14 , C08J9/144 , H01B11/1839 , H01B13/142 , C08J2327/12 , C08J2427/00 , Y10S264/05 , Y10S264/13 , Y10T29/49123 , Y10T29/49885
摘要： An improved foamable dielectric composition comprising a melt extrudable perfluorocarbon resin containing therein (i) a polytetrafluoroethylene (PTFE) nucleating agent and (ii) a volatile blowing agent, preferably a lower fluorocarbon blowing agent having only one or two carbon atoms; a process for forming such a composition; and, products produced therewith. More specifically, a foamed melt extrudable fluorinated ethylene-propylene (FEP) polymer containing therein a PTFE nucleating agent and blown to a foamed structure by means of a volatile fluid--e.g., a lower fluorocarbon such as fluoromethane or, preferably, fluoroethane, a process for forming such a foamed compostion; and, products produced therewith such as jacketed electrical conductors and/or coaxial cables wherein at least one conductor is bonded to such a foamed melt extrudable resin. The foamed dielectric melt extrudable resin is characterized by its thermal stability, fire resistance, small closed cell structure, low density, and low insulating loss characteristics. In a preferred embodiment, the melt extrudable foamed resin comprises a perfluorocarbon polymer having a closed cellular structure with cells ranging from 10 to 40 mils., a density at least as low as 1.0 g./cc., and an insulation loss of less than 1.8 db/100 ft. at 1000 MHz.
摘要翻译：一种改进的可发泡介电组合物，包括其中含有可熔融挤出的全氟化碳树脂（i）聚四氟乙烯（PTFE）成核剂和（ii）挥发性发泡剂，优选仅具有一个或两个碳原子的低碳氟化合物发泡剂; 一种形成这种组合物的方法; 以及由此产生的产品。更具体地说，一种含有PTFE成核剂的发泡熔融挤出的氟化乙烯 - 丙烯（FEP）聚合物，并通过挥发性流体例如氟代甲烷或优选氟代乙烷吹入发泡结构，用于形成这样的发泡组合物; 以及由此产生的产品，例如夹套电导体和/或同轴电缆，其中至少一个导体与这种发泡熔融可挤出树脂结合。发泡电介质熔融挤出树脂的特征在于其热稳定性，耐火性，闭孔结构小，密度低，绝缘损耗低等特点。在优选的实施方案中，熔体可挤出发泡树脂包括具有封闭的细胞结构的全氟化碳聚合物，细胞范围为10至40密耳，密度至少低至1.0g / cc，绝缘损失小于在1000 MHz时为1.8 db / 100 ft。

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