公开(公告)号：US5107742A

公开(公告)日：1992-04-28

申请号：US578559

申请日：1990-09-04

申请人： John Cummings ,  Fred Mills ,  Richard Gerlach ,  Glenn Strawn

发明人： John Cummings ,  Fred Mills ,  Richard Gerlach ,  Glenn Strawn

IPC分类号： G10D13/02

CPC分类号： G10D13/025

摘要： A shiftable snare strainer for a snare drum including a body secured to the drum shell and a slide longitudinally shiftable relative to the body. The slide is connected at its lower end to the snares. A lock is pivotally carried by the body for engaging the slide to hold the slide in a down position wherein the snares are spaced from the head. The lock is released by striking a release pad to allow the slide to shift upwardly to engage the snares with the drumhead.

摘要翻译： 用于小鼓的可移动的圈套过滤器，包括固定到鼓壳的主体和相对于身体纵向移位的滑块。 滑块在其下端连接到网络。 锁体被身体枢转地承载，用于与滑动件接合以将滑动件保持在向下位置，其中圈套与头部间隔开。 通过敲击释放垫来释放锁，以允许滑块向上移动以将耳环与鼓头接合。

公开(公告)号：USD818380S1

公开(公告)日：2018-05-22

申请号：US29560373

申请日：2016-04-06

申请人： John Cummings

设计人： John Cummings

公开(公告)号：US08269491B2

公开(公告)日：2012-09-18

申请号：US12038119

申请日：2008-02-27

申请人： John Cummings ,  William P. Taylor ,  David J. Haas

发明人： John Cummings ,  William P. Taylor ,  David J. Haas

IPC分类号： G01R33/09 ,  G01N27/72

CPC分类号： G01R33/09 ,  G01R15/202 ,  G01R15/205 ,  G01R15/207 ,  G01R33/0023 ,  G01R33/0029 ,  G01R33/0035

摘要： Presented is a sensor that includes a magnetoresistive (MR) sensing device to sense a magnetic field and to produce an AC signal voltage proportional to the sensed magnetic field. The sensor also includes circuitry, coupled to the MR sensing device, to remove DC offset from the AC signal voltage. The DC offset may be related to the hysteresis characteristics of the MR sensing device. To remove DC offset, the circuitry may obtain an averaged DC offset and subtract the averaged DC offset from the AC signal voltage to produce a sensor output signal.

摘要翻译： 提出了一种传感器，其包括用于感测磁场并产生与所感测的磁场成比例的AC信号电压的磁阻（MR）感测装置。 传感器还包括耦合到MR感测装置的电路，以从AC信号电压去除DC偏移。 DC偏移可能与MR感测装置的滞后特性有关。 为了消除DC偏移，电路可以获得平均DC偏移，并从AC信号电压中减去平均的DC偏移量，以产生传感器输出信号。

公开(公告)号：US07134735B2

公开(公告)日：2006-11-14

申请号：US10613288

申请日：2003-07-03

申请人： John Cummings

发明人： John Cummings

IPC分类号： A47F3/00

CPC分类号： A47F3/005 ,  A47F3/002

摘要： A display case comprises a first section having a top wall, a bottom wall and a back wall connected between the top and bottom walls, and, a second section having opposed side walls with a front wall connected between them. The second section slides into engagement with the first section to form a closed interior. The bottom wall of the first section is integrally formed with a bracket which includes first and second arms connected in an inverse, L-shape, with one of the arms oriented parallel to and spaced from the bottom wall to form a space within which a shelf is received. A thumb screw or other mounting device extends through the bracket arm to engage the shelf and secure the display case thereto.

摘要翻译： 显示器壳体包括具有顶壁，底壁和连接在顶壁和底壁之间的后壁的第一部分，以及具有相对侧壁的第二部分，前壁连接在它们之间。 第二部分滑动与第一部分接合以形成封闭的内部。 第一部分的底壁与支架一体形成，支架包括以相反的L形连接的第一和第二臂，其中一个臂平行于底壁并与底壁间隔开，形成一个搁板 被收到。 拇指螺钉或其他安装装置延伸穿过支架臂以接合货架并将展示柜固定到其上。

公开(公告)号：US20050073866A1

公开(公告)日：2005-04-07

申请号：US10681089

申请日：2003-10-07

申请人： John Cummings

发明人： John Cummings

IPC分类号： H01M14/00 ,  H02M20060101

CPC分类号： H02M3/1588 ,  H01M10/0525 ,  Y02B70/1466

摘要： Boost converters, power supply apparatuses, electrical energy boost methods and electrical energy supply methods are described. According to one aspect, a boost converter includes an input configured to receive direct current electrical energy at a first voltage, an output configured to output direct current electrical energy at a second voltage higher than the first voltage, a plurality of switching devices coupled in series intermediate a positive terminal of the output and a ground, wherein one of the switching devices comprises a high side switching device coupled with the positive terminal and the other of the switching devices comprises a low side switching device coupled with the ground, drive circuitry configured to output a common control signal to control switching of the plurality of switching devices, a capacitor configured to capacitively couple the common control signal from the drive circuitry to the high side switching device, and wherein the control signal is configured to control the switching of the switching devices to boost the voltage of the received electrical energy of the first voltage to the second voltage.

摘要翻译： 描述了升压转换器，电源装置，电能提升方法和电能供应方法。 根据一个方面，升压转换器包括被配置为在第一电压处接收直流电能的输入，被配置为在高于第一电压的第二电压处输出直流电能的输出;串联耦合的多个开关装置 在输出端的正端和地之间，其中开关装置之一包括与正极耦合的高侧开关装置，另一个开关装置包括与地耦合的低侧开关装置，驱动电路被配置为 输出公共控制信号以控制所述多个开关装置的开关;电容器，被配置为将来自所述驱动电路的所述公共控制信号电容耦合到所述高侧开关装置，并且其中所述控制信号被配置为控制所述开关的切换 用于提高第一电压的接收电能的电压的装置 到第二电压。

公开(公告)号：US6137267A

公开(公告)日：2000-10-24

申请号：US236136

申请日：1999-01-22

申请人： Barry K. Kates ,  John Cummings

发明人： Barry K. Kates ,  John Cummings

IPC分类号： H02J7/00 ,  H02M1/00 ,  H02M3/158

CPC分类号： H02J7/0052 ,  H02M3/1588 ,  H02J2007/0059 ,  H02M1/32 ,  Y02B40/90 ,  Y02B70/1466

摘要： A limiting circuit for controlling overshoot in a charge current in a battery recharging system includes a current amplifier receiving input indicative of charge current in a rechargeable battery circuit and generating a current error signal, a voltage amplifier receiving input indicative of charge voltage in the rechargeable battery circuit and generating a voltage error signal, and a power amplifier receiving a first signal indicative of power in a switching voltage regulator and a second power signal indicative of power in the rechargeable battery circuit, and generating a power error signal. The limiting circuit compares the voltage error signal, the current error signal, and the power error signal to determine the error signal having the greatest value, and generates an input signal to a pulse width modulation comparator. The limiting circuit also includes an internal current source, a first transistor coupled to the current amplifier, a second transistor coupled to the voltage amplifier; and a third transistor coupled to the power amplifier. The first transistor, the second transistor, and the third transistor are coupled to the internal current source to determine the error signal having the greatest value. To prevent reverse current flow in the switching voltage regulator, a low current comparator receives a signal indicative of the current flowing in the switching voltage regulator, and generates an output signal. A transistor receives the output signal from the low current comparator, and generates a signal to maintain the current flowing in the switching regulator circuit above a threshold value.

摘要翻译： 用于控制电池充电系统中的充电电流中的过冲的限制电路包括电流放大器，其接收表示充电电池电路中的充电电流的输入并产生电流误差信号，电压放大器接收指示充电电池中的充电电压的输入 并产生电压误差信号，以及功率放大器，接收指示开关电压调节器中的功率的第一信号和指示可再充电电池电路中的功率的第二功率信号，以及产生功率误差信号。 限幅电路比较电压误差信号，电流误差信号和功率误差信号，以确定具有最大值的误差信号，并产生到脉宽调制比较器的输入信号。 限制电路还包括内部电流源，耦合到电流放大器的第一晶体管，耦合到电压放大器的第二晶体管; 以及耦合到功率放大器的第三晶体管。 第一晶体管，第二晶体管和第三晶体管耦合到内部电流源，以确定具有最大值的误差信号。 为了防止开关电压调节器中的反向电流流动，低电流比较器接收指示在开关稳压器中流动的电流的信号，并产生输出信号。 晶体管接收来自低电流比较器的输出信号，并产生一个信号，以保持在开关调节器电路中流动的电流高于阈值。

公开(公告)号：USD809578S1

公开(公告)日：2018-02-06

申请号：US29565798

申请日：2016-05-24

申请人： John Cummings

设计人： John Cummings

公开(公告)号：USD809032S1

公开(公告)日：2018-01-30

申请号：US29562498

申请日：2016-04-26

申请人： John Cummings

设计人： John Cummings

公开(公告)号：US09046562B2

公开(公告)日：2015-06-02

申请号：US13590585

申请日：2012-08-21

申请人： John Cummings ,  William P. Taylor ,  David J. Haas

发明人： John Cummings ,  William P. Taylor ,  David J. Haas

IPC分类号： G01R33/09 ,  G01R33/00 ,  G01R15/20

CPC分类号： G01R33/09 ,  G01R15/202 ,  G01R15/205 ,  G01R15/207 ,  G01R33/0023 ,  G01R33/0029 ,  G01R33/0035

摘要： Presented is a sensor that includes a magnetoresistive (MR) sensing device to sense a magnetic field and to produce an AC signal voltage proportional to the sensed magnetic field. The sensor also includes circuitry, coupled to the MR sensing device, to remove DC offset from the AC signal voltage. The DC offset may be related to the hysteresis characteristics of the MR sensing device. To remove DC offset, the circuitry may obtain an averaged DC offset and subtract the averaged DC offset from the AC signal voltage to produce a sensor output signal.

摘要翻译： 提出了一种传感器，其包括用于感测磁场并产生与所感测的磁场成比例的AC信号电压的磁阻（MR）感测装置。 传感器还包括耦合到MR感测装置的电路，以从AC信号电压去除DC偏移。 DC偏移可能与MR感测装置的滞后特性有关。 为了消除DC偏移，电路可以获得平均DC偏移，并从AC信号电压中减去平均的DC偏移量，以产生传感器输出信号。

公开(公告)号：US20050212485A1

公开(公告)日：2005-09-29

申请号：US11160149

申请日：2005-06-10

申请人： John Cummings

发明人： John Cummings

IPC分类号： H02J7/00

CPC分类号： H02J7/0021 ,  H02J7/0016

摘要： Circuits, apparatuses, electrochemical device charging methods, and lithium-mixed metal electrode cell charging methods are provided. According to one aspect, a circuit includes charging circuitry adapted to apply electrical energy to an electrochemical device to charge the electrochemical device, and the electrochemical device being configured to assume an open-circuit condition in a substantially charged state; shunting circuitry electrically coupled with the charging circuitry and configured to shunt the electrical energy around the electrochemical device responsive to the electrochemical device reaching the substantially charged state; and indication circuitry configured to output a signal responsive to the shunting of the electrical energy to indicate a charge status of the electrochemical device.

摘要翻译： 提供电路，装置，电化学装置充电方法和锂复合金属电极电池充电方法。 根据一个方面，电路包括适于将电能施加到电化学装置以对电化学装置充电的充电电路，并且电化学装置被配置为呈现处于基本充电状态的开路状态; 分流电路与充电电路电耦合并且被配置为响应于电化学装置达到基本充电状态而分流电化学装置周围的电能; 以及指示电路，被配置为输出响应于所述电能的分流的信号，以指示所述电化学装置的充电状态。