公开(公告)号：US5883503A

公开(公告)日：1999-03-16

申请号：US869838

申请日：1997-06-05

申请人： Melvin A. Lace

发明人： Melvin A. Lace

IPC分类号： G05F1/24

CPC分类号： G05F1/24

摘要： A voltage compensation system for an A.C. power line supplying one or more air conditioners, a telephone system or other telecommunication system, a battery charger, or some other utilization system that should have an input voltage within a given normal range. The voltage compensation system includes a transformer unit containing a transformer having at least two windings coupled electromagnetically by a transformer core; one of those windings preferably is in two segments that are connectable in series or in parallel. One winding is connected to an input terminal and to an output terminal. The other winding adds to the A.C. line voltage when the line voltage drops below a low voltage threshold and/or subtracts from the line voltage when the A.C. line voltage exceeds a high voltage threshold. If the A.C. line voltage is in the range required by the utilization system, the other transformer winding is effectively shorted out or otherwise disconnected. In automated versions, a line voltage sensor actuates a switching circuit to effect the desired compensation action. The voltage compensation system may handle under-voltage conditions, over-voltage conditions, or both. For chronic under-voltage or over-voltage conditions, direct winding connections may be employed instead of relays.

摘要翻译： 供应一个或多个空调，电话系统或其他电信系统，电池充电器或应当具有在给定正常范围内的输入电压的一些其他利用系统的交流电力线路的电压补偿系统。 所述电压补偿系统包括：变压器单元，其包含变压器，所述变压器具有由变压器铁芯电磁耦合的至少两个绕组; 这些绕组中的一个优选地处于可串联或并联连接的两个段中。 一个绕组连接到输入端子和输出端子。 当线路电压低于低电压阈值时，另一个线圈增加了交流线路电压，和/或当交流线路电压超过高电压阈值时从线路电压减去。 如果交流线路电压在使用系统所需的范围内，则其他变压器绕组有效地短路或以其他方式断开。 在自动版本中，线路电压传感器启动开关电路以实现所需的补偿动作。 电压补偿系统可以处理欠电压条件，过压条件或两者兼有。 对于慢性欠电压或过电压条件，可以采用直接绕组连接而不是继电器。

公开(公告)号：US5408043A

公开(公告)日：1995-04-18

申请号：US998734

申请日：1992-12-30

申请人： Melvin A. Lace

发明人： Melvin A. Lace

IPC分类号： G10H3/18

CPC分类号： G10H3/181 ,  G10H2220/515

摘要： An electromagnetic pickup for a musical instrument (e.g. a guitar) having a plurality of ferromagnetic strings coplanar and parallel with each other, the pickup being adapted to be mounted adjacent to but spaced from the strings includes an elongated electrical pickup coil having a longitudinal central opening, the opening having a length at least as great as the span S of the strings. The pickup also includes an elongated main permanent magnet having a length L such that L>S and an elongated ferromagnetic shell having a length at least as great as S. The main permanent magnet, the pickup coil, and the shell are assembled together in an electromagnetic pickup assembly in which at least one side of the pickup coil is enclosed by the shell, and the main permanent magnet is parallel to the central opening of the coil; the assembly generates a magnetic field which encompasses at least one portion of the pickup coil. A housing mounts the pickup assembly on the musical instrument with the top of the coil facing the instrument strings, which intercept a portion of the magnetic field.

摘要翻译： 一种用于乐器（例如吉他）的电磁拾音器，具有彼此共面并平行的多个铁磁弦，所述拾取器适于安装在与所述琴弦相邻但间隔开的位置，所述拾音器包括具有纵向中心开口 开口的长度至少与弦的跨度S一样大。 拾取器还包括长度为L的细长主永磁体，使得L> S和长度至少与S相同的长度的铁磁壳。主永磁体，拾取线圈和壳体组装在一起 电磁拾取组件，其中拾取线圈的至少一侧由壳体包围，并且主永磁体平行于线圈的中心开口; 组件产生包围拾波线圈的至少一部分的磁场。 壳体将拾音器组件安装在乐器上，线圈的顶部面向仪器琴弦，其截取磁场的一部分。

公开(公告)号：US4878145A

公开(公告)日：1989-10-31

申请号：US273595

申请日：1988-11-21

申请人： Melvin A. Lace

发明人： Melvin A. Lace

IPC分类号： H02H9/06

CPC分类号： H02H9/06

摘要： A surge/transient protector for an N-line data cable (e.g., N=16) or other group of N data lines having two data conductors and a return conductor for each line includes individual conductor segments for each data line conductor; conventional multi-pin connectors are used to connect the protector in series in the lines. The protector has a positive bus, a negative bus, and a ground bus; each data conductor segment is coupled by a pair of oppositely polarized diodes to the positive and negative buses, and each return conductor is coupled to the reference bus by two oppositely connected diodes. Two large capacity energy storage devices (e.g. 10,000 microfarad capacitors) are connected between the reference bus and the positive and negative buses, each paralleled by a Zener diode to establish a discharging threshold just slightly greater than one-half the voltage range for the data lines. There are also N gas tubes, each connected between two data conductor segments and ground, and N supplemental energy storage devices, which may be metal oxide varistors functioning as large, threshold-limited capacitors; all of the protector apparatus, including a power supply, is mounted in one compact housing, with the two large-capacity energy storage devices serving all of the data lines.

摘要翻译： 用于N线数据电缆（例如，N = 16）或具有两条数据导体的N条数据线的其他组的浪涌/瞬态保护器和用于每条线的返回导体包括用于每条数据线导体的单独的导体段; 传统的多针连接器用于将保护器串联连接在线路中。 保护器有一个正公交车，一个负母线和一个地面总线; 每个数据导体段通过一对相对极化的二极管耦合到正和负总线，并且每个返回导体通过两个相对连接的二极管耦合到参考总线。 两个大容量储能装置（例如10,000微法电容器）连接在基准总线和正和负母线之间，每个母线与齐纳二极管并联，以建立略大于数据线电压范围的一半的放电阈值 。 还有N个气体管，每个连接在两个数据导体段和地之间，N个补充能量存储装置可以是金属氧化物变阻器作为大的限流电容器; 所有包括电源的保护装置都安装在一个紧凑的外壳中，两个大容量储能装置用于所有数据线。

公开(公告)号：US4015789A

公开(公告)日：1977-04-05

申请号：US491431

申请日：1974-08-05

申请人： Melvin A. Lace ,  Fernand F. Pelletier

发明人： Melvin A. Lace ,  Fernand F. Pelletier

IPC分类号： G11B23/07 ,  G11B15/18 ,  G11B15/44 ,  G11B15/675 ,  G11B15/20

CPC分类号： G11B15/1891 ,  G11B15/44

摘要： A side access opening is provided in a side wall of a continuous loop tape cartridge which is normally driven in a forward direction by the capstan of a tape player through an access opening in its front wall to remove tape from a central hub at the inner convolution thereof and to return it to the hub at the outer convolution. A cooperating side drive mechanism is provided in the tape player housing adjacent the side access opening in the cartridge. The tape is driven in a reverse direction through the cartridge by the side drive mechanism of the player through the side access opening to remove tape from the hub at the outer convolution thereof and to return it to the hub at the inner convolution by being coupled to a vertical peripheral wall portion of the cartridge hub at a point spaced a predetermined distance from the axis of rotation of the hub. The coupling relation is effected either directly through the outer convolution of tape or directly to the rim of the hub or simultaneously through both means. Further alternative embodiments are provided for coupling the drive means of the player to the hub through one or more idler wheels in the cartridge. Several embodiments of a side drive are disclosed. Actuating means selectively couple the side drive mchanism to the hub. Means are also provided for using the side drive mechanism to drive the tape in a fast forward direction through the cartridge. In reverse winding, the tape is guided onto the peripheral wall portion of the hub by being applied against an adjacent curved flange portion of the hub. A pivotable lever momentarily moves the cartridge outwardly in the player cartridge receiving cavity to disengage the capstan from its coupled relation to the tape through the front access opening whenever the reverse or fast forward modes of operation are selected. In one embodiment means are provided for reversing the direction of rotation of the player drive as appropriate to drive the tape forwardly or in reverse.

公开(公告)号：US5712554A

公开(公告)日：1998-01-27

申请号：US662126

申请日：1996-06-12

申请人： Melvin A. Lace

发明人： Melvin A. Lace

IPC分类号： G05F1/24

CPC分类号： G05F1/24

摘要： A voltage compensation device for a two-conductor A.C. power line supplying one or more air conditioners, a telephone system or other telecommunication system, or some other utilization system that requires an input voltage within a given range. The device includes a transformer having electromagnetically coupled primary and secondary windings with the primary and secondary each connected to at least one output terminal. One winding is connected to add voltage to the A.C. line voltage when the line voltage drops below a given low voltage threshold, and in bucking (subtractive) relation when the A.C. line voltage exceeds a given high voltage threshold. When the A.C. line voltage is in the range required by the utilization system, the one winding is effectively shorted out or otherwise disconnected. A sensor for the line voltage actuates one or more relays connected to the transformer to effect the desired compensation action. The voltage compensation device may handle either under-voltage conditions or over-voltage conditions, or both. In one embodiment the one winding is split to afford two levels of voltage compensation both for under-voltage and over-voltage conditions.

摘要翻译： 用于供应一个或多个空调，电话系统或其它电信系统的二导体交流输电线路的电压补偿装置或需要在给定范围内的输入电压的一些其它利用系统。 该装置包括具有电磁耦合的初级和次级绕组的变压器，其中初级和次级绕组各自连接到至少一个输出端子。 当线路电压降到低于给定的低电压阈值时，并且当交流线路电压超过给定的高电压阈值时，一个绕组被连接以将电压加到交流线路电压。 当交流线路电压在使用系统所需的范围内时，一个绕组有效地短路或以其他方式断开。 用于线路电压的传感器启动连接到变压器的一个或多个继电器以实现期望的补偿动作。 电压补偿装置可以处理欠压条件或过电压条件，或两者兼有。 在一个实施例中，一个绕组被分开以在欠压和过电压条件下提供两个电平补偿电平。

公开(公告)号：US5557058A

公开(公告)日：1996-09-17

申请号：US329315

申请日：1994-10-26

申请人： Melvin A. Lace

发明人： Melvin A. Lace

IPC分类号： G10H3/18 ,  H01C10/34 ,  G10H1/08 ,  G10H3/12 ,  H01C10/36

CPC分类号： G10H3/186 ,  H01C10/34

摘要： A signal blender that combines the pickup signals generated by three pickups for a musical instrument (e.g., a guitar) in plural combinations and multiple amplitudes to develop a blend signal. The device comprises a main blending resistance with plural connection taps, one for each pickup when the main resistance is a complete 360.degree. ring, one more tap if the main resistance is less than 360.degree.. Each pickup is connected to a tap. A rotary contact engages the main resistance to generate the blend signal; the blend signal is applied to an output amplifier.

摘要翻译： 一种信号混合器，其组合由用于乐器（例如吉他）的三个拾音器产生的拾音信号，其以多个组合和多个振幅组合，以产生混合信号。 该装置包括具有多个连接抽头的主混合电阻，当主电阻为360度环时，每个拾取器一个，如果主电阻小于360度，则另一个抽头。 每个拾音器连接到水龙头。 旋转触点接合主电阻以产生混合信号; 混合信号被施加到输出放大器。

公开(公告)号：USRE32520E

公开(公告)日：1987-10-13

申请号：US448042

申请日：1982-12-08

申请人： Melvin A. Lace

发明人： Melvin A. Lace

IPC分类号： G01P3/488 ,  H02K21/38

CPC分类号： G01P3/488

摘要： A magnetic probe for sensing the passage of a moving magnetic element, comprising a radially magnetized cylindrical permanent magnet, formed of a flat sheet of elastomer bonded ferrite material magnetized across its smallest dimension and curled to cylindrical configuration, or formed in cup-shaped configuration. A magnetic collector core is mounted co-axially in one end of the magnet cylinder and has an axial pole piece of reduced diameter projecting to the other end of the magnet cylinder, and an electrical sensor coil encompasses the pole piece; the sub-assembly comprising the magnet, the core, and the coil is mounted in a cylindrical magnetic housing, with only high-reluctance flux paths between the inner surface of the permanent magnet and the housing.

公开(公告)号：US4074157A

公开(公告)日：1978-02-14

申请号：US729272

申请日：1976-10-04

申请人： Melvin A. Lace

发明人： Melvin A. Lace

IPC分类号： G01P3/46 ,  G01P3/487 ,  H02K3/52 ,  H02K5/22 ,  H02K21/22 ,  H02K3/50

CPC分类号： G01P3/465 ,  G01P3/487 ,  H02K21/227 ,  H02K3/525 ,  H02K5/225 ,  H02K2201/12

摘要： A sub-fractional A.C. signal generator incorporating a stator assembly comprising a coil wound upon an annular bobbin of molded insulator material, a pair of annular magnetically premeable stator members having alignment apertures snap-fit onto integral bosses projecting from the bobbin, in concentric relation in a stator sub-assembly, the two stator members affording a multiplicity of individual pole pieces interleaved one-for-one around the outer periphery of the coil. The sub-assembly and an insulator barrier are press fit onto opposite ends of a cylindrical stator support member within which a sleeve bearing is mounted to provide a complete stator assembly. A drive shaft is journalled in the stator bearing and carries an annular permanent magnet which encompasses the stator members but is spaced therefrom by a uniform radial air gap. A housing affixed to the insulator barrier encompasses rotor and stator assemblies.

摘要翻译： 一个小分数AC信号发生器，其包括一个定子组件，该定子组件包括缠绕在模制的绝缘体材料的环形线轴上的线圈，一对具有对准孔的环形磁性可预先定影构件，该对准孔与从线轴突出的整体凸台卡扣配合， 一个定子子组件，两个定子构件提供了多个单独的极片，其围绕线圈的外围一个接一个地交错。 子组件和绝缘体障碍物压配合到圆柱形定子支撑构件的相对端上，在其中安装套筒轴承以提供完整的定子组件。 驱动轴轴颈固定在定子轴承中，并带有环形永磁体，该环形永磁体包围定子构件，但是通过均匀的径向气隙与其隔开。 固定在绝缘体屏障上的外壳包括转子和定子组件。

公开(公告)号：US5522738A

公开(公告)日：1996-06-04

申请号：US324900

申请日：1994-09-18

申请人： Melvin A. Lace

发明人： Melvin A. Lace

IPC分类号： H01R24/58 ,  H01R17/18

CPC分类号： H01R24/58 ,  H01R2103/00

摘要： An electrical connector jack for a conventional two-conductor electrical connector plug; the plug is inserted into the jack in a given direction to connect a signal source to an amplifier with minimal or no noise when the connection is made. The plug has concentric electrically isolated tip and ring electrodes, with the tip projecting beyond the ring in the direction of insertion. The jack includes two signal contacts (one may be grounded) engageable individually with the tip and ring electrodes of the plug when the plug is fully inserted into the jack; these signal contacts are electrically connected to a signal source such as a guitar pickup. A shorting contact engages and interconnects the tip and ring electrodes until the plug is fully inserted. The signal contacts and the shorting contact may have a common insulator support.

摘要翻译： 用于常规双导电连接器插头的电连接器插孔; 当连接时，插头以给定的方向插入插座中，以将信号源与放大器连接起来，甚至没有噪音。 插头具有同心电隔离的尖端和环形电极，其中尖端在插入方向上突出超过环。 插头包括两个信号触点（一个可以接地），当插头完全插入插孔时，它可以与插头的尖端和环形电极单独接合; 这些信号触点电连接到诸如吉他拾音器的信号源。 短路触头接合和互连尖端和环形电极，直到插头完全插入。 信号触点和短路触点可以具有公共的绝缘体支撑。

公开(公告)号：US4941063A

公开(公告)日：1990-07-10

申请号：US341771

申请日：1989-04-20

申请人： Thomas McCartney ,  Melvin A. Lace

发明人： Thomas McCartney ,  Melvin A. Lace

IPC分类号： H02H9/04 ,  H02H9/06 ,  H04M3/18

CPC分类号： H04M3/18 ,  H02H9/042 ,  H02H9/06

摘要： Overvoltage protection arrangements are provided for a pair of telephone lines effective for suppressing noise and transient voltage signals occurring above data and voice signals carried on the telephone lines and that avoids current flow between the telephone lines responsive to common mode voltage signals on the lines so that audible hum is avoided. The overvoltage protection arrangements include first voltage clamping circuitry for clamping voltage signals on the lines at a first predetermined voltage potential and second voltage clamping and filter circuitry for clamping voltage signals on the lines at a second predetermined voltage potential and for filtering noise and transient signals from the voltage signals only when the voltage signals exceed the second predetermined voltage potential. The second voltage clamping circuitry substantially avoids current flow between the lines responsive to common mode voltage signals on the lines.

摘要翻译： 为一对有效抑制在电话线上承载的数据和语音信号之上的噪声和瞬态电压信号产生的电压线路提供过电压保护装置，并且响应于线路上的共模电压信号而避免电流之间的电流流动， 可以避免嗡嗡声。 过电压保护装置包括用于钳位在第一预定电压电位的线路上的电压信号的第一电压钳位电路和用于钳位在第二预定电压电位的线路上的电压信号的第二电压钳位和滤波器电路， 电压信号仅在电压信号超过第二预定电压电位时。 第二电压钳位电路基本上避免了线路之间的电流流动，响应于线路上的共模电压信号。