Unsaturated polyester resins, a process for their preparation and
compositions containing these polyester resins
    92.
    发明授权
    Unsaturated polyester resins, a process for their preparation and compositions containing these polyester resins 失效
    不饱和聚酯树脂,其制备方法和含有这些聚酯树脂的组合物

    公开(公告)号:US4921883A

    公开(公告)日:1990-05-01

    申请号:US169967

    申请日:1988-03-18

    摘要: Unsaturated polyester resins having an acid number of from 0 to 50 and a hydroxyl number of from 10 to 150 which are composed of 0.6 to 0.8 moles of groups derived from maleic and/or fumaric acid, 0.2 to 0.4 moles of groups derived from norbornene dicarboxylic acid, 0.6 to 0.8 moles of groups derived from ethylene and/or propylene glycol, 0.2 to 0.4 moles of groups derived from diethylene glycol, 0.1 to 0.2 moles of groups derived from benzylalcohol and/or benzoic acid and 0 to 0.2 moles of groups derived from other alcohols, a process for their manufacture by a solvent-free or azeotropic esterification of said monomers and compositions which can be cured under influence of UV radiation, containing from 40 to 80 parts by weight of said polyester resins, from 20 to 60 parts by weight of styrene from 0.5 to 5 parts by weight of at least one photoinitiator and optionally known auxiliary agents and additives.

    摘要翻译: 由0.6至0.8摩尔衍生自马来酸和/或富马酸的基团组成的酸值为0至50且羟基数为10至150的不饱和聚酯树脂,衍生自降冰片烯二羧酸的基团为0.2至0.4摩尔 酸,0.6至0.8摩尔衍生自乙烯和/或丙二醇的基团,0.2至0.4摩尔衍生自二甘醇的基团,0.1至0.2摩尔衍生自苄醇和/或苯甲酸的基团和0至0.2摩尔衍生的基团 来自其它醇的方法,其通过所述单体的无溶剂或共沸酯化制备的方法,所述单体和组合物可以在UV辐射的影响下固化,所述组合物含有40至80重量份的所述聚酯树脂,20至60重量份 的苯乙烯0.5至5重量份的至少一种光引发剂和任选地已知的助剂和添加剂。

    Communication system thermoprotection device for over voltage suppressor
mounted in overvoltage suppressor magazines of communication systems
    93.
    发明授权
    Communication system thermoprotection device for over voltage suppressor mounted in overvoltage suppressor magazines of communication systems 失效
    通讯系统用于过电压抑制器的热保护装置,安装在通信系统的过压抑制器杂志中

    公开(公告)号:US4887183A

    公开(公告)日:1989-12-12

    申请号:US257388

    申请日:1988-10-13

    IPC分类号: H01H37/76 H01T1/14

    CPC分类号: H01T1/14

    摘要: A thermal protection device for overvoltage suppressor which includes spaced contacts 6 mounted in overvoltage suppressor magazines 11 of communication systems. A bow-type spring 3 and a melt element 2 l are arranged with the overvoltage suppressor which is mounted in a chamber of a case body or housing 13. The melt element is pierced by at least one arm of the bow-type spring when an overvoltage occurs for short-circuiting the two contacts of the overvoltage suppressor. A thermal protection device with simple components prevents creepage currents between the bow-type spring and the contacts of the overvoltage suppressor 6, a chamber for the overvoltage suppressor is adjacent and abutting to a separate chamber formed in the case body for accommodating a bow-type spring. Between the two chambers there is a separating wall comprising a thermoplastic melt element.

    摘要翻译: 一种用于过电压抑制器的热保护装置,其包括安装在通信系统的过压抑制器杂志11中的隔开的触点6。 弓形弹簧3和熔化元件2l布置有过电压抑制器,其安装在壳体或壳体13的腔室中。当弓形弹簧的至少一个臂被 过电压发生用于短路过压抑制器的两个触点。 具有简单部件的热保护装置防止弓形弹簧和过电压抑制器6的触点之间的漏电流,用于过电压抑制器的室相邻并邻接于形成在壳体中的单独的室,用于容纳弓形 弹簧。 在两个室之间有一个包含热塑性熔体元件的分隔壁。

    Connector block with solderless, non-screwed and stripping-free
terminals having a polytropic air gap for terminating communication
cables and dropwire cables
    96.
    发明授权
    Connector block with solderless, non-screwed and stripping-free terminals having a polytropic air gap for terminating communication cables and dropwire cables 失效
    连接器块,带无焊接,无螺纹和无剥离端子,具有用于端接通信电缆和线缆的多向气隙

    公开(公告)号:US4541682A

    公开(公告)日:1985-09-17

    申请号:US632210

    申请日:1984-07-18

    CPC分类号: H01R4/2429 H01T4/06 H04Q1/142

    摘要: The subject matter of the invention is a connector block (1) with solderless, non-screwed and stripping-free terminal elements (2, 3) having a polytropic air gap, for terminating dropwire cables (6) and cable wires (7). The terminal elements (2, 3), which comprise a terminal contact (2b, 3b) and a center contact (2a, 3a), have a semi-circular extension (2a') on the underside (2') of the center contact (2a, 3a), the spacing of said semi-circular extension relative to an earth bar (4) mounted in the housing lower half (12) being variable by tilting the earth bar (4) about 180.degree.; said earth bar (4) is adapted to be mounted at either of two different levels. Thereby it is possible to select a high-voltage spark-gap function.

    摘要翻译: 本发明的主题是一种连接器块(1),其具有用于端接线缆(6)和电缆线(7)的具有多向气隙的无焊料,无螺纹和无剥离的端子元件(2,3)。 包括端子触点(2b,3b)和中心触点(2a,3a)的端子元件(2,3)在中心触点的下侧(2')上具有半圆形延伸部(2a') (2a,3a),所述半圆形延伸部相对于安装在壳体下半部(12)中的接地棒(4)的间距可通过将接地棒(4)倾斜约180度而变化; 所述接地棒(4)适于安装在两个不同的水平中的任一个处。 因此,可以选择高压火花隙功能。

    Surge-protected cable joint
    97.
    发明授权
    Surge-protected cable joint 失效
    浪涌保护电缆接头

    公开(公告)号:US4420200A

    公开(公告)日:1983-12-13

    申请号:US253725

    申请日:1981-04-13

    CPC分类号: H02G15/117

    摘要: The invention relates to a surge-protected cable joint for telecommunication networks, comprising a joint casing closed at either end and having axial cable inlets, and terminal strips for the cable wires secured in the casing interior. In order to permit connection of an increased number of cable wires without increasing the external dimensions while at the same time obtaining a higher resistance to surge currents, the individual terminal strips are disposed within the joint interior in a plurality of double rows arranged in series and each row is fixedly mounted within a trough, thus resulting in a wiring free from crossover points and in an increased number of connections. The receiving troughs (2, 2a) are bolted together in pairs with their bottoms adjacent each other, and are secured to lateral connecting rails (4). These connecting rails (4) in turn are mechanically and electrically coupled via support rails (6) to one of the end walls of the joint casing (1) and via an earth cable to a connecting bolt (5). Furthermore, surge arrester magazines (8) are detachably secured, e.g. by clamping, on the individual terminal strips.

    摘要翻译: 本发明涉及一种用于电信网络的浪涌保护电缆接头,包括在任一端封闭并具有轴向电缆入口的接头壳体,以及用于固定在壳体内部中的电缆线的端子排。 为了允许增加数量的电缆线的连接而不增加外部尺寸,同时获得更高的浪涌电流电阻,各个端子条以串联排列的多个双列布置在接头内部,并且 每排固定地安装在槽内,从而导致没有交叉点的布线和更多数量的连接。 接收槽(2,2a)与它们的底部成对地螺栓连接在一起,并且固定到横向连接轨道(4)上。 这些连接导轨(4)依次通过支撑导轨(6)机械地和电耦合到接头壳体(1)的一个端壁,并且经由接地电缆到连接螺栓(5)。 此外,电涌放电器杂志(8)可拆卸地固定,例如。 通过夹紧,在各个端子排上。

    Connector assembly for PCM cables
    99.
    发明授权
    Connector assembly for PCM cables 失效
    PCM电缆连接器组件

    公开(公告)号:US4405187A

    公开(公告)日:1983-09-20

    申请号:US246248

    申请日:1981-03-23

    摘要: The invention relates to a connector assembly for cables adapted to transmit signals with pulse-code modulation. The connector assembly may be used with an increased number of twin conductors either as a simple connector strip or as a pressure sealed cable termination device in conjunction with a housing member. The assembly offers sufficient electrical shielding and is of small size. To this end the connector assembly comprises a base plate (1) mounting a plurality of metal-shielded plastic housings (20). Each of the plastic housings (20) accommodates a pair of contact pins (24,24') secured in the base plate (1) in a pressure sealed and elecrically insulated manner for a twin conductor or, respectively, an individual cable, and further accommodates solderless, screwless and stripless PLUS-contact elements (13, 14, 15) electrically connected to the contact pins. At the lower surface of the base plate (1) there is provided a shielding (3) for the contact pins (24, 24') and the cable conductors (9a) fixedly connected thereto, the shielding (3) being formed of a plurality of electrically conductive partition walls (3b).

    摘要翻译: 本发明涉及一种适用于通过脉冲编码调制传输信号的电缆连接器组件。 连接器组件可以与更多数量的双导体一起用作简单连接器条或作为与壳体构件一起的压力密封电缆端接装置。 该组件提供足够的电气屏蔽并且具有小尺寸。 为此,连接器组件包括安装多个金属屏蔽塑料外壳(20)的基板(1)。 每个塑料壳体(20)容纳一对以压力密封和电绝缘方式固定在基板(1)中的接触销(24,24'),用于双导体或单独的电缆,并且进一步 容纳电连接到接触针的无焊料,无螺纹和无带状的PLUS接触元件(13,14,15)。 在基板(1)的下表面设置有用于接触销(24,24')的屏蔽(3)和与其固定连接的电缆导体(9a),屏蔽(3)由多个 的导电分隔壁(3b)。

    Audiometer with photo sensitive, digitally tunable low distortion
oscillator
    100.
    发明授权
    Audiometer with photo sensitive, digitally tunable low distortion oscillator 失效
    具有光敏,数字可调低失真振荡器的听力计

    公开(公告)号:US4394627A

    公开(公告)日:1983-07-19

    申请号:US237107

    申请日:1981-02-23

    IPC分类号: H03B5/02 H03B5/20 H03J5/24

    CPC分类号: H03J5/246

    摘要: To provide for tuning of an oscillator circuit, a plurality of resistors are selectively connectable in the circuit. To provide for reproducible, accurate oscillation frequency in accordance with switching of a respective resistor in dependence on a digital input signal, electronic switches are respectively connected to the resistors to connect them in circuit in the oscillator to thereby eliminate variable contact resistances of mechanical switches. A digital frequency control signal is generated by placing a movable mask or pattern with openings therein between an array, for example a linear strip of light emitting diodes, and a similar strip of photo transistors, the respective energization of which is determined by openings in the diaphragm. The signals from the photo transistors are stored in a memory, typically a group of flip-flops, for application to the electronic switches controlling connection of the respective resistors in the oscillator circuit.

    摘要翻译: 为了提供振荡器电路的调谐,多个电阻器可选择性地连接在电路中。 为了根据数字输入信号根据相应电阻器的切换来提供可再现的精确的振荡频率,电子开关分别连接到电阻器以将它们连接在振荡器中的电路中,从而消除机械开关的可变接触电阻。 数字频率控制信号是通过将阵列(例如发光二极管的线性条)和类似的光电晶体管放置在其间具有开口的可移动掩模或图案而产生的,其相应的通电由 隔膜 来自光电晶体管的信号被存储在通常为一组触发器的存储器中,用于应用于控制振荡器电路中各个电阻器的连接的电子开关。