专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US4249237A Rotary phase converter 失效
标题翻译：旋转相位转换器
公开(公告)号：US4249237A
公开(公告)日：1981-02-03
申请号：US28263
申请日：1979-04-09
申请人： Leroy B. Ronk , Claude M. Hertz
发明人： Leroy B. Ronk , Claude M. Hertz
IPC分类号： H02K47/30 , H02M5/32
CPC分类号： H02K47/30
摘要： A rotary phase converter for connection to a single-phase a.c. power source and adapted to supply polyphase current to a polyphase electrical load. The converter includes a dynamoelectric machine having at least three stator windings and at least first, second and third output terminals, an autotransformer and at least one capacitor. The stator windings of the dynamoelectric machine are oriented symmetrically with respect to each other both physically and electrically and each has a substantially equal number of active turns. The first and second terminals of the dynamoelectric machine are adapted to be connected to the single-phase a.c. power source and they are also outputs of the converter. The autotransformer is connected across the second and third terminals and has at least one tap positioned intermediate the ends thereof to serve as an output of the converter. The capacitor is connected between the first output terminal and the autotransformer tap serving as a converter output. The currents supplied from the converter outputs to the phases of the polyphase load are maintained substantially balanced at full load.
摘要翻译：用于连接到单相交流电的旋转相位转换器电源并且适于向多相电负载提供多相电流。转换器包括具有至少三个定子绕组和至少第一，第二和第三输出端子，自耦变压器和至少一个电容器的电动机。电动机的定子绕组在物理和电气上相对于彼此对称取向，并且每个具有基本相等数量的有效匝数。电动机的第一和第二端子适于连接到单相交流电。电源，它们也是转换器的输出。自耦变压器连接在第二和第三端子上，并且至少有一个位于其端部之间的抽头以用作转换器的输出端。电容器连接在作为转换器输出的第一输出端子和自耦变压器抽头之间。从转换器输出提供的电流到多相负载的相位在全负载下保持基本平衡。

2. 发明授权

US4816956A Stray voltage reduction apparatus 失效
标题翻译：杂散电压降低装置
公开(公告)号：US4816956A
公开(公告)日：1989-03-28
申请号：US161259
申请日：1988-02-23
申请人： Claude M. Hertz , Leroy B. Ronk
发明人： Claude M. Hertz , Leroy B. Ronk
IPC分类号： H02H3/14 , H02H9/08
CPC分类号： H02H3/14
摘要： Stray voltage reduction apparatus for installation in an electrical power system to complete a path of electrical continuity between a primary neutral of a power distribution transformer and a grounding conductor at a service entrance, the primary neutral being also attached to a ground connection but nevertheless having a stray voltage relative to true earth which would appear on the grounding conductor at the service entrance if the primary neutral were directly connected to the grounding conductor at the service entrance. The stray voltage reduction apparatus includes a coil having turns wound around a core establishing a magnetic circuit for the coil. The core is made of a material having an initial permeability in excess of about 50,000 and being substantially saturated when the flux density is no more than about 10,000 gauss. The coil is wound around the core to have an impedance at 60 Hz. of at least approximately 750 ohms which falls in value when the volts-per-turn of the coil is not substantially less than an amount which substantially saturates the core, and reaches a value of less than an ohm when the volts-per-turn of the coil is greater than the amount which substantially saturates the core, the impedance substantially reducing the stray voltage at the grounding conductor at the service entrance. The stray voltage reduction apparatus can be combined with a power distribution transformer within or attached to the transformer tank.
摘要翻译：用于安装在电力系统中以完成配电变压器的初级中性线与服务入口处的接地导体之间的电连续路径的杂散电压降低装置，所述主要中性线也附接到接地连接，但是具有如果主要中性线直接连接到服务入口处的接地导体，则相对于真地的杂散电压将出现在服务入口的接地导体上。杂散电压降低装置包括具有围绕芯线缠绕的线圈的线圈，其建立用于线圈的磁路。该芯由具有超过约50,000的初始磁导率的材料制成，并且当磁通密度不超过约10,000高斯时，其基本饱和。线圈缠绕在芯上以具有60Hz的阻抗。至少约750欧姆，当线圈的每伏特伏特数基本上不小于基本上饱和磁芯的量时，该值落在数值上，并且当电压每转为零时，达到小于欧姆的值线圈大于使芯体基本饱和的量，阻抗大大降低了服务入口处接地导体处的杂散电压。杂散电压降低装置可以与变压器箱内或附着于变压器箱内的配电变压器组合。

3. 发明授权

US4297551A Electrical transfer switch 失效
标题翻译：电气转换开关
公开(公告)号：US4297551A
公开(公告)日：1981-10-27
申请号：US135266
申请日：1980-03-31
申请人： Leroy B. Ronk
发明人： Leroy B. Ronk
IPC分类号： H01H1/58 , H01H21/42 , H01H5/08
CPC分类号： H01H21/42 , H01H1/5822
摘要： A transfer switch comprising a support, first and second fixed contacts mounted on the support and adapted to be connected to first and second sources of power, respectively, a rocker pivotable between first and second positions, a contactor carried by the rocker. The contactor is movable with respect to the first and second contacts and is engageable with the first fixed contact when the rocker is in its first position and with the second fixed contact when the rocker is in its second position. An actuator is provided for moving the rocker between its first and second positions, whereby the movable contactor is adapted to be connected to a first source of power when the rocker is in its first position and to a second source of power when the rocker is in its second position. The actuator comprises a shaft rotatably mounted on the support and an overcentering spring, the shaft having a handle and a crank and the spring being secured at one end to the crank and at the other end to the rocker. The rocker is pivotally mounted on the shaft and the shaft is rotatable on the support between first and second angular positions. The spring applies a force to the rocker causing the rocker to snap from one position to the other when the shaft is pivoted from one angular position to the other.
摘要翻译：一种转换开关，包括支撑件，第一和第二固定触点，其安装在支撑件上并且适于分别连接到第一和第二电源，可在第一和第二位置之间枢转的摇杆，由摇杆承载的接触器。接触器可相对于第一和第二触点移动，并且当摇臂处于其第二位置时，当摇臂处于其第一位置时，接触器可与第一固定触点接合，并且当摇臂处于其第二位置时可接触第二固定触点。提供致动器，用于在其第一和第二位置之间移动摇杆，由此当摇臂处于其第一位置时，活动接触器适于连接到第一动力源并且当摇杆处于第二位置时连接到第二动力源其第二名。致动器包括可旋转地安装在支撑件上的轴和过中心弹簧，该轴具有手柄和曲柄，弹簧的一端固定在曲柄上，另一端固定在摇臂上。摇杆枢转地安装在轴上，并且轴可在第一和第二角度位置之间的支撑件上旋转。当轴从一个角位置枢转到另一个位置时，弹簧向摇臂施加力，导致摇杆从一个位置卡扣到另一个位置。

4. 发明授权

US4741084A Conversion of mechanical punch presses to hydraulic punch presses 失效
标题翻译：机械冲压机转换为液压冲压机
公开(公告)号：US4741084A
公开(公告)日：1988-05-03
申请号：US896519
申请日：1986-08-12
申请人： Leroy B. Ronk
发明人： Leroy B. Ronk
IPC分类号： B21D28/00 , B21J9/10 , B23D33/00 , B30B15/00 , B21K21/16 , B23D17/04
CPC分类号： B21D28/00 , B21J9/10 , B23D33/00 , B30B15/00 , Y10T29/49716
摘要： A method of converting a mechanically operated punch press to a hydraulically operated punch press, the mechanical punch press being of the type having a motor-driven flywheel coupled with a crank journaled between two bearing seats, the method comprising disconnecting the flywheel, replacing the crank with a hydraulic ram having trunnions projecting laterally therefrom and sized and positioned to be journaled in the same bearing seats in which the crank was journaled, and connecting the hydraulic ram to a source of hydraulic fluid. A controller can be interposed between the source of hydraulic fluid and the ram to control the operation of the punch press.
摘要翻译：一种将机械操作的冲压机转换成液压操作的冲压机的方法，所述机械冲压机是具有与轴颈座在两个轴承座之间的曲柄连接的电动飞轮的类型，该方法包括断开飞轮，更换曲柄具有液压压头，其具有从其侧向突出的耳轴，并且其尺寸和位置被轴颈安装在相对于所述曲柄轴颈的相同的轴承座中，并将所述液压油缸连接到液压流体源。控制器可以插在液压流体源和压头之间，以控制冲压机的操作。

5. 发明授权

US4697132A Reduction of voltage drop in power distribution systems and of loss of motor torque 失效
标题翻译：降低配电系统的电压降和电机转矩损失
公开(公告)号：US4697132A
公开(公告)日：1987-09-29
申请号：US283636
申请日：1981-07-15
申请人： Leroy B. Ronk , Claude M. Hertz
发明人： Leroy B. Ronk , Claude M. Hertz
IPC分类号： H02P1/26
CPC分类号： H02P1/26
摘要： Apparatus and method for reducing the voltage drop in an electrical power distribution system during the starting of a multi-phase induction motor having stator windings supplied therefrom and for decreasing the loss in starting torque of the motor. A capacitor is provided for direct connection across each stator phase winding of the motor. These are electrically connected to the stator windings substantially simultaneously with the motor being supplied with power from the distribution system. These capacitors have a capacitance which exceeds that required to raise the no-load power factor of the motor to unity at running speed but is less than that which will correct the power factor of the motor to unity under locked rotor conditions. Preferably these capacitors are electrolytic-type capacitors and have a capacitance which will reduce the motor starting current by at least approximately 30%. When the motor has substantially reached its running speed, the capacitors are substantially simultaneously disconnected from the respective stator windings.
摘要翻译：在具有从其提供的定子绕组的多相感应电动机起动期间，用于减小配电系统中的电压降的装置和方法，并且用于减小电动机起动转矩的损失。提供电容器用于直接连接在电动机的每个定子相绕组上。这些电路与定子绕组电连接，基本上与电机从配电系统供电。这些电容器的电容超过了将电动机的空载功率因数提升到运行速度的单位所需的电容，但小于在锁定的转子条件下将电机的功率因数校正为单位的电容。优选地，这些电容器是电解型电容器，并且具有将电动机起动电流降低至少约30％的电容。当电动机基本上达到其运行速度时，电容器基本上同时与相应的定子绕组断开。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式