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

US07731319B2 Imaging head elevator 有权
标题翻译：成像头电梯
公开(公告)号：US07731319B2
公开(公告)日：2010-06-08
申请号：US11105687
申请日：2005-04-14
申请人： Antoni S. Murcia , David L. Berardelli , Kelvin J. Hasseler , Adam J. Livingston , Srinivas Bhakthavatsalam , Kenneth C. Westfield , Charles L. Hayman , Mark A. Hay
发明人： Antoni S. Murcia , David L. Berardelli , Kelvin J. Hasseler , Adam J. Livingston , Srinivas Bhakthavatsalam , Kenneth C. Westfield , Charles L. Hayman , Mark A. Hay
IPC分类号： B41J25/308
CPC分类号： B41J25/308
摘要： Various embodiments of an apparatus and method for lifting an imaging head are disclosed.
摘要翻译：公开了用于提升成像头的装置和方法的各种实施例。

2. 发明授权

US4459527A Stepper motor control circuit 失效
标题翻译：步进电机控制电路
公开(公告)号：US4459527A
公开(公告)日：1984-07-10
申请号：US477745
申请日：1983-03-23
申请人： Charles L. Hayman
发明人： Charles L. Hayman
IPC分类号： H02P8/12 , H02K29/02
CPC分类号： H02P8/12
摘要： A digital input signal is fed through an interface to a logic phase control which decodes the signal to provide a plurality of phase signals in a predetermined relationship for driving a sychronous DC stepper motor. The phase signals are fed to corresponding phase drivers which amplify the pulses of the phase signals before they are applied to the corresponding phase windings of the stepper motor. Each phase driver includes an operational amplifier and a power transistor connected in a closed loop to provide a current pulse having a constant predetermined peak amplitude to the corresponding phase winding during acceleration of the motor. The inductive time constant of the motor phase windings is thus overcome so that an applied mechanical load can be rapidly accelerated without stalling and the absence of dropping resistors minimizes power dissipation and heat generation. A pulse detector turns off the phase drivers after a predetermined time interval following the last pulse of the digital input signal to provide a time brake holding torque and near zero standby power comsumption. Components in the circuit are provided for protecting the power transistors from breakdown due to back emf signals generated in the phase windings.
摘要翻译：数字输入信号通过接口馈送到逻辑相位控制，该逻辑相位控制解码信号以提供预定关系的多个相位信号，用于驱动同步DC步进电机。将相位信号馈送到相位相位驱动器，该相位驱动器在施加到步进电机的相应相绕组之前将相位信号的脉冲放大。每个相位驱动器包括运算放大器和连接在闭环中的功率晶体管，以在马达的加速期间向相应的相绕组提供具有恒定的预定峰值振幅的电流脉冲。因此，克服了电动机相绕组的感应时间常数，使得施加的机械负载可以快速加速而不会失速，并且不存在下降电阻器使功率耗散和发热最小化。脉冲检测器在数字输入信号的最后一个脉冲之后的预定时间间隔后关断相位驱动器，以提供时间制动保持转矩和接近零待机功率消耗。提供电路中的元件用于保护功率晶体管不受由相绕组中产生的反电动势信号的破坏。

3. 发明授权

US4377828A Ticket transport 失效
标题翻译：票务运输
公开(公告)号：US4377828A
公开(公告)日：1983-03-22
申请号：US211023
申请日：1980-12-01
申请人： Charles L. Hayman , John B. Roes , Royal C. Moore, Jr.
发明人： Charles L. Hayman , John B. Roes , Royal C. Moore, Jr.
IPC分类号： G07B11/00 , G11B19/02 , G06K7/00 , G11B25/04
CPC分类号： G07B11/00
摘要： A ticket transport which is capable of rapidly reciprocating a ticket to permit a single transducer to read, write and/or verify information on the ticket. Upper and lower ticket guide plates define a ticket channel through which a ticket is propelled past an adjacent transducer by a plurality of rollers driven by a stepper motor. The upper ticket guide plate is hingedly mounted to permit access to the ticket channel. The stepper motor is controlled by special circuitry adapted to overcome the inductive time constant of the stepper motor to permit rapid acceleration, for example 0 to 50 inches per second in 30 milliseconds, of the ticket with minimum power dissipation. Sensors in the transport provide ticket position information. A combined magnetic head and pressure shoe assembly is provided for adjusting the thickness of the ticket channel.
摘要翻译：能够快速往返票据以允许单个换能器读取，写入和/或验证票据上的信息的票据传输。上部和下部导向板限定了通过由步进电动机驱动的多个辊被推进通过相邻换能器的票证通道。上部导板被铰接安装，以允许进入票通道。步进电机由专门的电路控制，适用于克服步进电机的感应时间常数，以允许在最小功耗下快速加速，例如30毫秒内每秒0至50英寸。运输中的传感器提供票据位置信息。提供组合的磁头和压力靴组件以调节票通道的厚度。

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