Frequency generator and communication system using the same
    41.
    发明申请
    Frequency generator and communication system using the same 失效
    频率发生器和通信系统使用相同

    公开(公告)号:US20050059373A1

    公开(公告)日:2005-03-17

    申请号:US10901966

    申请日:2004-07-30

    Abstract: A frequency generator which can perform stable frequency oscillation unaffected by temperature variation. A frequency generator having a differential amplifier (1) having an LC resonance circuit (10) as a load and buffer circuits (21, 22) feeding back an output of the differential amplifier to its input, wherein a temperature coefficient converter (5) converting an output voltage of a reference voltage generator (4) and its temperature dependence to a voltage having a predetermined voltage and temperature coefficient and outputting it is provided to control bias currents IEF of emitter follower circuits to be in proportion to temperature variation. There are a characteristic in which delay time of the emitter follower circuits constructing the buffer circuits is in inverse proportion to a transconductance of transistors and a characteristic in which the transconductance is in inverse proportion to temperature and is in proportion to the bias currents IEF. An oscillation frequency stable to temperature variation can be obtained.

    Abstract translation: 频率发生器,可以进行不受温度变化影响的稳定频率振荡。 一种频率发生器,具有作为负载的LC谐振电路(10)的差分放大器(1)和将差分放大器的输出反馈到其输入端的缓冲电路(21,22),其中温度系数转换器(5)转换 参考电压发生器(4)的输出电压及其与具有预定电压和温度系数的电压的温度依赖性并输出,以将射极跟随器电路的偏置电流IEF控制为与温度变化成比例。 构成缓冲电路的射极跟随器电路的延迟时间与晶体管的跨导成反比的特性以及跨导与温度成反比并与偏置电流IEF成比例的特性。 可以得到温度变化稳定的振荡频率。

    Partially protected novel trisphenols and process for production thereof
    42.
    发明授权
    Partially protected novel trisphenols and process for production thereof 失效
    部分保护的新型三酚及其制备方法

    公开(公告)号:US06603029B1

    公开(公告)日:2003-08-05

    申请号:US09673886

    申请日:2000-12-18

    CPC classification number: C07D309/12 C07C69/712 C07C69/96 C07C2601/14

    Abstract: The invention provides a partially protected trisphenol having the general formula (I) wherein R1 is an alkyl group of 1-4 carbons or an alkoxyl group of 1-4 carbons, R2 is an alkyl group of 1-6 carbons or a cycloalkyl group of 5 or 6 carbons, X1 is a hydrogen atom, an alkoxycarbonylmethyl group wherein the alkyl group has 1-4 carbons, an alkoxycarbonyl group wherein the alkyl group has 1-4 carbons or a tetrahydropyranyl group, X2 is a hydrogen atom, an alkoxycarbonylmethyl group wherein the alkyl group has 1-4 carbons, an alkoxycarbonyl group wherein the alkyl group has 1-4 carbons or a tetrahydropyranyl group, provided that when X1 is a hydrogen atom, X2 is not a hydrogen atom, and when X2 is a hydrogen atom, X1 is not a hydrogen atom; and m is an integer of 0, 1 or 2, and n is an integer of 0, 1, 2 or 3.

    Abstract translation: 本发明提供了具有通式(I)的部分保护的三酚,其中R 1是1-4个碳的烷基或1-4个碳的烷氧基,R 2是1-6个碳的烷基或环烷基 5或6个碳原子,X 1为氢原子,烷基具有1-4个碳原子的烷氧基羰基甲基,烷基具有1-4个碳原子的烷氧基羰基或四氢吡喃基,X2为氢原子,烷氧基羰基甲基 其中烷基具有1-4个碳原子,烷基具有1-4个碳原子的烷氧基羰基或四氢吡喃基,条件是当X1是氢原子时,X2不是氢原子,当X2是氢原子时 X1不是氢原子; m为0,1或2的整数,n为0,1,2或3的整数。

    Method of manufacturing a jack
    43.
    再颁专利
    Method of manufacturing a jack 失效
    千斤顶的制造方法

    公开(公告)号:USRE35039E

    公开(公告)日:1995-09-26

    申请号:US278239

    申请日:1988-11-30

    Abstract: The invention relates to a method of manufacturing a jack comprising a step of punching a sheet metal by which a plurality of contact piece elements to be individual contact pieces of a jack are formed into a state of being partially connected to one another and arranged in parallel, a step of bending both ends of each contact piece element downward, a step of cutting off each contact piece element arranged in parallel by a cutter to form individual contact pieces, and a step of forcedly incorporating each contact piece into a jack body positioned right under a punching stroke of the cutter positioned right under a punching stroke of the cutter used in the cutting step whereby a complete automatization of the manufacturing is attained, considerably increasing productivity and decreasing an equipment cost as much.

    Abstract translation: 本发明涉及一种制造千斤顶的方法,包括冲压金属板的步骤,通过该金属板将作为千斤顶的单个接触片的多个接触件元件形成为彼此部分地连接并平行布置的状态 将每个接触片元件的两端部向下方弯曲的步骤,切断由切割器平行配置的各接触片元件形成各个接触片的步骤,以及强制将每个接触片合并到位于右侧的插座体的步骤 在切割步骤中的切割行程下正确地切割刀具的冲压行程,由此实现制造的完全自动化,大大提高生产率并降低设备成本。

    Connector for printed circuit board
    44.
    发明授权
    Connector for printed circuit board 失效
    印刷电路板连接器

    公开(公告)号:US4747790A

    公开(公告)日:1988-05-31

    申请号:US873663

    申请日:1986-06-12

    CPC classification number: H01R12/83

    Abstract: The invention discloses a connector for printed circuit board comprising a first contact piece with a spring contactor, a second contact piece with a spring contactor, and a body in which these spring contactors can be arranged at their positions deviated from each other in lengthwise direction and a printed circuit board can be inserted in and out obliquely between contact points of the spring contactors, characterized in that when the printed circuit board inserted obliquely in the body is situated in substantially horizontal state, the printed circuit board is tightly contacted with the contact points of the spring contactors, thereby electrical connection between the printed circuit board and the first and second contact pieces being exactly and appropriately insured over a long period irrespective of frequency in insertion in and out of the printed circuit board.

    Abstract translation: 本发明公开了一种用于印刷电路板的连接器,其包括具有弹簧接触器的第一接触件,具有弹簧接触器的第二接触件和其中这些弹簧接触器可以在其沿纵向方向彼此偏离的位置处布置的主体,以及 印刷电路板可以在弹簧接触器的接触点之间倾斜地插入和插出,其特征在于,当倾斜地插入到本体中的印刷电路板处于基本水平状态时,印刷电路板与接触点紧密接触 的弹性接触器,由此印刷电路板和第一和第二接触片之间的电连接在长时间内被精确和适当地保护,而不管插入和插出印刷电路板的频率如何。

    Connector for printed board connection
    45.
    发明授权
    Connector for printed board connection 失效
    印刷板连接用连接器

    公开(公告)号:US4715819A

    公开(公告)日:1987-12-29

    申请号:US898780

    申请日:1986-08-19

    Abstract: This invention discloses a connector for printed board connection comprising a first body having a plurality of first contacts to be connected with one printed wiring and a second body facing to the first contacts of the first body, in which the first body and the second body are turnably and detachably connected with each other, each end of the first contacts and each end of the second contacts are brought into contact with each other within a turning range, so that the printed boards may be easily and speedily connected with each other and that the arrangement of the printed boards may be freely selected while electrical connection therebetween being assured, maintenance being easily carried out and cost being saved thereby.

    Abstract translation: 本发明公开了一种用于印刷电路板连接的连接器,包括:第一主体,具有与一个印刷布线连接的多个第一触点和面对第一主体的第一触点的第二主体,第一主体和第二主体 彼此可转动地并且可拆卸地连接,第一触点的每个端部和第二触头的每个端部在转动范围内彼此接触,使得印刷板可以容易且快速地彼此连接,并且 可以自由地选择印刷电路板的布置,同时确保电连接,容易进行维护,从而节约成本。

    Method of manufacturing a jack
    46.
    发明授权
    Method of manufacturing a jack 失效
    千斤顶的制造方法

    公开(公告)号:US4685212A

    公开(公告)日:1987-08-11

    申请号:US774619

    申请日:1985-09-10

    Abstract: The invention discloses a method of manufacturing a jack comprising a step of punching a sheet metal by which a plurality of contact piece elements to be individual contact pieces of a jack are formed into a state of being partially connected to one another and arranged in parallel, a step of bending both ends of each contact piece element downward, a step of cutting off each contact piece element arranged in parallel by a cutter to form individual contact pieces, and a step of forcedly incorporating each contact piece into a jack body positioned right under a punching stroke of the cutter used in the cutting step whereby a complete automatization of the manufacturing is attained, considerably increasing productivity and decreasing an equipment cost as much.

    Abstract translation: 本发明公开了一种制造千斤顶的方法,包括冲压金属板的步骤,通过该金属板将作为千斤顶的单独接触片的多个接触件元件形成为彼此部分地彼此连接并且平行布置的状态, 将每个接触片元件的两端向下弯曲的步骤,切割由切割器平行布置的每个接触片元件以形成单独的接触片的步骤,以及将每个接触片强制结合到位于正下方的插座体的步骤 在切割步骤中使用的切割器的冲压行程,从而实现制造的完全自动化,显着提高生产率并降低设备成本。

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