公开(公告)号：US4724452A

公开(公告)日：1988-02-09

申请号：US926616

申请日：1986-11-03

申请人： Hemant K. Mody ,  David L. White ,  Ashok Murthy

发明人： Hemant K. Mody ,  David L. White ,  Ashok Murthy

IPC分类号： G03B9/36 ,  G03B9/00

CPC分类号： G03B9/36

摘要： A shutter is disclosed for use as a high-speed shutter in a camera or an electronic device. The shutter comprises a planar aperture blade which is mounted for reciprocative movement. The aperture blade includes a coil which is part of an electromagnetic actuator. A permanent magnet is mounted adjacent the blade for interaction with a magnetic field produced by the coil. In order to provide for a low-friction support, the aperture blade is supported on flexible connectors located on opposite sides of the blade. A current of one polarity is supplied to the coil to move the aperture blade in one direction, and the polarity of the current is reversed to move the blade in the opposite direction.

摘要翻译： 公开了一种用于相机或电子设备中的高速快门的快门。 快门包括安装成往复运动的平面孔径叶片。 光圈叶片包括作为电磁致动器的一部分的线圈。 永久磁铁安装在刀片附近，与线圈产生的磁场相互作用。 为了提供低摩擦支撑，光圈叶片被支撑在位于叶片相对侧上的柔性连接器上。 一个极性的电流被提供给线圈以沿一个方向移动孔径叶片，并且电流的极性反转以沿相反方向移动叶片。

公开(公告)号：US4905031A

公开(公告)日：1990-02-27

申请号：US334774

申请日：1989-04-10

申请人： Hemant K. Mody

发明人： Hemant K. Mody

IPC分类号： G03B3/10 ,  H01F7/122 ,  H01F7/16 ,  H02K33/16

CPC分类号： H02K33/16 ,  G03B3/10 ,  H01F7/1646 ,  H01F7/122

摘要： An axial magnet actuator is disclosed in which a member formed of a magnetic material is movable relative to a frame along an axis. Electromagnets are positioned along the axis at spaced locations. In order to keep the mass of the movable member as small as possible, no magnetic elements are located on the member. An annular permanent magnet is located along the axis between the electromagnets and functions with the electromagnets to move the member, keep the member suspended in an axial direction, and hold the member in a selected position when the electromagnets are not energized.

摘要翻译： 公开了一种轴向磁体致动器，其中由磁性材料形成的构件可相对于沿轴线的框架移动。 电磁铁沿着轴线定位在间隔的位置。 为了保持可动部件的质量尽可能小，部件上没有磁性元件。 环形永久磁铁沿电磁铁的轴线位于电磁铁之间，功能与电磁铁一起移动，并保持构件沿轴向方向悬挂，并在电磁铁未通电时将构件保持在选定位置。

公开(公告)号：US5694098A

公开(公告)日：1997-12-02

申请号：US650359

申请日：1996-05-20

申请人： Hemant K. Mody ,  Mark A. Juds ,  Peter J. Theisen

发明人： Hemant K. Mody ,  Mark A. Juds ,  Peter J. Theisen

IPC分类号： H01H77/10 ,  H01H75/00

CPC分类号： H01H77/108

摘要： A thick solid steel slot motor is disposed adjacent a movable conductor to apply a contact closing force on the conductor, augmenting the contact pressure spring, under steady state current conditions, and to reduce the force under high rate of current rise conditions to enhance dynamic separation of the movable conductor from a stationary conductor, reducing the strength requirement of the contact pressure spring.

摘要翻译： 厚实的实心钢槽电机设置在可动导体附近，以在稳态电流条件下在导体上施加接触闭合力，增加接触压力弹簧，并在高电流上升条件下降低力，以增强动态分离 的可动导体，从而降低了接触压力弹簧的强度要求。

公开(公告)号：US5189567A

公开(公告)日：1993-02-23

申请号：US749757

申请日：1991-08-26

申请人： Hemant K. Mody

发明人： Hemant K. Mody

IPC分类号： G11B11/105 ,  H03K17/725

CPC分类号： G11B11/10508 ,  G11B11/10521 ,  H03K17/725

摘要： A resonant AC circuit includes a network of switching elements (e.g., power field-effect transistor) by which the direction of current flow through a coil can be selectively switched at each time in the current cycle, when the current amplitude is substantially zero. Such circuit is particularly advantageous and useful in magneto-optic recording systems for switching the polarity of a magnetic field enabling the direct-overwriting of information on a previously recorded magneto-optic recording element at a high data transfer rate.

摘要翻译： 谐振AC电路包括开关元件（例如功率场效应晶体管）的网络，当电流幅度基本为零时，通过该开关元件的网络可以在当前周期中的每个时间选择性地切换线圈的电流方向。 这种电路在用于切换磁场的极性的磁光记录系统中是特别有利和有用的，从而能够以高数据传输速率直接重写先前记录的磁光记录元件上的信息。

公开(公告)号：US06657837B1

公开(公告)日：2003-12-02

申请号：US09473420

申请日：1999-12-29

申请人： Robert A. Morris ,  Hemant K. Mody ,  Thomas F. Papallo ,  James I. Smith ,  Nataniel de Jesus Barbosa Vicente

发明人： Robert A. Morris ,  Hemant K. Mody ,  Thomas F. Papallo ,  James I. Smith ,  Nataniel de Jesus Barbosa Vicente

IPC分类号： H02H300

CPC分类号： H02H11/008

摘要： Transformers (14) inject test voltage signals of know frequency to each phase of the load side of an electrical distribution circuit (15). Processor (32) waits for a delay period to allow transient effects of the injected signals to settle, and then accepts the sampled test current signals provided by current transformers (12) through conditioning circuit (16). This process is repeated by injecting test voltages at different frequencies, which are selected by processor (32) based on stored instructions. Processor (32) uses the sampled signals to determine a representative current for the load side of the distribution circuit (15) and then compares the representative current with a predetermined current threshold value stored in non-volatile memory (40). If the current is above this threshold, processor (32) provides a lockout signal to the fault lockout device (48) and fault lockout flag (50). Upon receiving this lockout signal, fault lockout device (48) prevents the closure of the breaker contacts (17), and fault lockout flag (50) provides for remote indication of breaker lockout. If the current is below the threshold value, fault lockout device (48) is not activated, and the circuit breaker contacts (17) are allowed to close.

摘要翻译： 变压器（14）将已知频率的测试电压信号注入到配电电路（15）的负载侧的每个相。 处理器（32）等待延迟时间以允许注入信号的瞬态效应稳定，然后接受由电流互感器（12）通过调理电路（16）提供的采样的测试电流信号。 通过以不同的频率注入测试电压来重复该过程，由基于存储的指令由处理器（32）选择。 处理器（32）使用采样信号来确定分配电路（15）的负载侧的代表性电流，然后将代表电流与存储在非易失性存储器（40）中的预定电流阈值进行比较。 如果电流高于该阈值，则处理器（32）向故障锁定装置（48）和故障锁定标志（50）提供锁定信号。 当接收到该锁定信号时，故障锁定装置（48）防止断路器触点（17）闭合，并且故障锁定标志（50）提供断路器锁定的远程指示。 如果电流低于阈值，则故障锁定装置（48）未被激活，断路器触点（17）被允许关闭。

公开(公告)号：US5667711A

公开(公告)日：1997-09-16

申请号：US650199

申请日：1996-05-20

申请人： Hemant K. Mody ,  William E. Grass

发明人： Hemant K. Mody ,  William E. Grass

IPC分类号： H02H3/08 ,  H02H3/02 ,  H02H9/02 ,  H05B1/02

CPC分类号： H02H3/025 ,  H02H9/026

摘要： A solenoid trip unit is electrically connected in parallel with a current limiting polymer element in series with circuit breaker contacts to function as a shunt resistance for the polymer element, becoming energized by transition of the polymer element to its high resistive state, for tripping the breaker contacts open upon such transition. The solenoid may be particularly wound with a resistive wire.

摘要翻译： 螺线管跳闸单元与与断路器触点串联的限流聚合物元件并联电连接，用作聚合物元件的分流电阻，通过聚合物元件的过渡到其高电阻状态而被激励，用于使断路器跳闸 接触在这种过渡时开放。 螺线管可以用电阻丝特别地缠绕。

公开(公告)号：US5420468A

公开(公告)日：1995-05-30

申请号：US191059

申请日：1994-02-01

申请人： Hemant K. Mody

发明人： Hemant K. Mody

IPC分类号： G11B21/08 ,  H02K41/035 ,  H02K41/02

CPC分类号： H02K41/0356 ,  G11B21/083

摘要： A linear motor of the type used to control the radial position of a write/read transducer relative to a rotating data storage disk comprises an elongated tubular-shaped permanent magnet which concentrically surrounds and is spaced, by an air gap, from an elongated pole piece of highly permeable material (e.g. steel). A selectively energizable coil, concentrically arranged between the magnet and pole piece, is adapted to move axially in response to an applied current. According to the invention, the pole piece supports a plurality of "shorting rings" made of high conductivity, low permeability material. The shorting rings are embedded in the pole piece so as to be coextensive with the surface thereof. The spaced shorting rings function as a "shorted turn" which operates to reduce the rise time of current applied to the coil without significantly reducing the magnetic flux in the air gap through which the coil is linearly driven.

摘要翻译： 用于控制写/读换能器相对于旋转数据存储盘的径向位置的类型的线性电动机包括细长的管状永磁体，其同心地围绕并由气隙与细长极片间隔开 的高渗透性材料（如钢）。 同心地布置在磁体和极片之间的选择性激励线圈适于响应于所施加的电流轴向移动。 根据本发明，极片支撑由高导电性，低磁导率材料制成的多个“短路环”。 短路环嵌入极片中以与其表面共同延伸。 间隔的短路环用作“短路匝”，其操作以减少施加到线圈的电流的上升时间，而不显着地减小线圈被线性驱动的气隙中的磁通量。

公开(公告)号：US6043978A

公开(公告)日：2000-03-28

申请号：US990249

申请日：1997-12-15

申请人： Hemant K. Mody ,  Xin Zhou ,  Peter J. Theisen

发明人： Hemant K. Mody ,  Xin Zhou ,  Peter J. Theisen

IPC分类号： H01H9/52 ,  H05K7/20

CPC分类号： H01H9/52 ,  H01H2033/6613

摘要： An alternating current circuit breaker having an extended fin cantilevered from its housing. A portion of the fin along its extended length is magnetized so that the fin flutters in the magnetic field generated by the alternating current conducted through the breaker. The resulting magnetic resonance vibration establishes forced, convective heat transfer which assists cooling of the breaker.

摘要翻译： 一种交流电路断路器，具有从其壳体悬臂延伸的延伸翅片。 翅片沿着其延长长度的一部分被磁化，使得翅片在由通过断路器传导的交流电产生的磁场中飘动。 所产生的磁共振振动产生强制的对流热传递，有助于断路器的冷却。

公开(公告)号：US5317340A

公开(公告)日：1994-05-31

申请号：US571939

申请日：1990-08-23

申请人： Hemant K. Mody

发明人： Hemant K. Mody

IPC分类号： B43L1/00 ,  B43L19/00 ,  G01D15/00 ,  G01D15/12 ,  G11B9/00

CPC分类号： G01D15/12 ,  B43L1/008 ,  B43L19/0031 ,  G01D15/005

摘要： Method and devices for erasing and writing on magnetic particle oriented media are described. Erasure is caused by moving a magnetic field which enters and exits the media at a finite angle but stays parallel to the media in some region. A magnetic stencil comprising regions of dissimilar permeabilities is described. The magnetic stencil can be used in conjunction with the erasure means to simultaneously create alternating fields parallel and normal to the media thereby permitting information to be written over any previously recorded information without requiring a seperate erasure step.

摘要翻译： 描述了用于在磁性颗粒取向介质上擦除和写入的方法和装置。 擦除是通过以有限角度移动进入和离开介质的磁场而引起的，但是在某些区域中保持平行于介质。 描述了包含不同渗透性区域的磁性模版。 磁性模板可以与擦除装置结合使用，以同时产生平行于和平行于介质的交替场，从而允许将信息写入任何先前记录的信息，而不需要单独擦除步骤。

公开(公告)号：US5290066A

公开(公告)日：1994-03-01

申请号：US885000

申请日：1992-05-18

申请人： Hemant K. Mody

发明人： Hemant K. Mody

IPC分类号： B42D15/00 ,  G06K7/08 ,  G06K19/06 ,  G08B13/24 ,  B42D1/00

CPC分类号： G08B13/2411 ,  B42D15/0086 ,  G06K19/06187 ,  G06K7/082

摘要： In situations such as the checkout of library books and video cassettes issued by video rental stores, it is desirable to indicate the date by which these materials are due. This patent describes a method and means for displaying the due date by using an erasable and rewritable media affixed to the issuable material. Device for writing/erasing this media is described. Furthermore, method and device for simultaneous reading of bar codes, writing the due date and altering the detectability state of a programmable magnetic strip are disclosed.

摘要翻译： 在视频租赁店发行的图书馆书籍和录像带的结帐等情况下，最好指明这些材料到期的日期。 该专利描述了通过使用附加到可发行材料上的可擦除和可重写介质来显示到期日的方法和装置。 描述用于写/擦除该介质的设备。 此外，公开了用于同时读取条形码，写入到期日期和改变可编程磁条的可检测性状态的方法和装置。