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1. 发明授权

US5646373A Apparatus for improving the power dissipation of a semiconductor device 失效
标题翻译：用于改善半导体器件的功耗的装置
公开(公告)号：US5646373A
公开(公告)日：1997-07-08
申请号：US539569
申请日：1995-10-05
申请人： Larry C. Collins , James G. Cook , John P. Hoffman
发明人： Larry C. Collins , James G. Cook , John P. Hoffman
IPC分类号： H01L23/12 , H01L23/36 , H01L23/367 , H05K1/00 , H05K1/02 , H05K3/42 , H05K7/20
CPC分类号： H05K1/0206 , H01L23/3677 , H01L2924/0002 , H05K1/0298 , H05K2201/066 , H05K2201/09618 , H05K2201/09781 , H05K2201/10166 , H05K3/429
摘要： An apparatus for improving the power dissipation of a semiconductor device surface mounted on a printed circuit board having at least a top printed circuit board layer and a bottom printed circuit board layer is provided. The apparatus includes a first pad of metallic material connected to a top surface of the top printed circuit board layer. The semiconductor device is connected to the first pad. A second pad of metallic material is connected a to the top surface of at least one of the top and bottom printed circuit board layers, wherein the second pad is electrically isolated from the semiconductor device. The apparatus also includes at least one thermal via for heat transfer through the printed circuit board layers thermally coupled to the thermal pad. A heat sink is thermally coupled to the at least one thermal via.
摘要翻译：提供了一种用于改善安装在至少具有顶部印刷电路板层和底部印刷电路板层的印刷电路板上的半导体器件表面的功率消耗的装置。该装置包括连接到顶部印刷电路板层的顶表面的第一金属材料垫。半导体器件连接到第一焊盘。金属材料的第二焊盘连接到顶部和底部印刷电路板层中的至少一个的顶表面，其中第二焊盘与半导体器件电隔离。该装置还包括至少一个用于通过热耦合到散热垫的印刷电路板层的热传递的热通孔。散热器与所述至少一个热通孔热耦合。

2. 发明授权

US5546264A Reverse voltage protection circuit 失效
标题翻译：反向电压保护电路
公开(公告)号：US5546264A
公开(公告)日：1996-08-13
申请号：US362335
申请日：1994-12-22
申请人： Gregory L. Williamson , John P. Hoffman
发明人： Gregory L. Williamson , John P. Hoffman
IPC分类号： H02H11/00 , H02H3/18
CPC分类号： H02H11/003
摘要： An apparatus for providing reverse protection to an electronic circuit is provided. The electronic circuit has a positive input terminal and a negative input terminal. The positive input terminal is coupled to a positive battery terminal via the apparatus. The negative input terminal is connected to a negative battery terminal. The apparatus includes a MOSFET transistor having a gate terminal, a drain terminal and a source terminal. One of the drain terminal and the source terminal is connected to the positive battery terminal and an other of the drain terminal and the source terminal is connected to the positive input terminal. One end of a resistor is connected to the gate terminal. One end of a pair of Zener diodes is connected to the gate terminal. The other end is connected to the source terminal.
摘要翻译：提供了一种用于向电子电路提供反向保护的装置。电子电路具有正输入端和负输入端。正输入端子经由该装置耦合到正电池端子。负输入端子连接到负极端子。该装置包括具有栅极端子，漏极端子和源极端子的MOSFET晶体管。漏极端子和源极端子之一连接到正极端子，另一个漏极端子和源极端子连接到正极端子。电阻器的一端连接到栅极端子。一对齐纳二极管的一端连接到栅极端子。另一端连接到源终端。

3. 发明授权

US5327344A Method and apparatus for reconfiguring a computerized monitoring system 失效
标题翻译：重新配置计算机化监控系统的方法和装置
公开(公告)号：US5327344A
公开(公告)日：1994-07-05
申请号：US945463
申请日：1992-09-16
申请人： John P. Hoffman , Ricky D. Vance , Dennis A. Barney , Joseph G. Kozlevcar
发明人： John P. Hoffman , Ricky D. Vance , Dennis A. Barney , Joseph G. Kozlevcar
IPC分类号： G01M17/007 , G06F17/40 , B60Q1/00 , G06F15/20
CPC分类号： G07C5/0825
摘要： Instruments are often designed to operate in connection with a variety of machine types. Advantageously, the instrument is capable of modifying the appearance and function of its displays in response to the machine to which the instrument is connected. The subject invention includes a device for producing an identification code and a plurality of gauges for indicating levels of the sensed parameters. Each of the gauges has an outline segment for illustrating a range of levels of the sensed parameter indicated by the gauge and a symbol for identifying the sensed parameter indicated by the gauge. A controller receives the identification code and selectively enables one or more of the plurality of gauges and illuminates the outline segment and symbol associated with each of the enabled gauges in response to the identification code.
摘要翻译：仪器通常设计用于与各种机器类型相关的操作。有利地，仪器能够响应于仪器所连接的机器而改变其显示器的外观和功能。本发明包括用于产生识别码的装置和用于指示感测参数的电平的多个量规。每个量规具有轮廓线段，用于说明由量规表示的感测参数的水平范围，以及用于识别由量规指示的感测参数的符号。控制器接收识别码，并响应于识别码选择性地启动多个量规中的一个或多个并且照亮与每个启用的量规相关联的轮廓段和符号。

4. 发明授权

US4682151A Position to duty cycle conversion apparatus and method 失效
标题翻译：位置到占空比转换装置和方法
公开(公告)号：US4682151A
公开(公告)日：1987-07-21
申请号：US804555
申请日：1985-12-04
申请人： John P. Hoffman
发明人： John P. Hoffman
IPC分类号： G08C19/46 , H03M1/00
CPC分类号： G08C19/46
摘要： Resolvers are in common use as angular position sensing devices. Such resolvers normally require difficult to generate sine-wave excitation signals, and extensive decoding circuitry for producing an output signal related to angular position. The subject apparatus utilizes a generator to produce a rectangular-wave timing signal. A logic circuit receives the timing signal and responsively produces first and second rectangular-wave excitation signals, which are delivered to respective stator coils of a resolver. A decoding circuit receives one of the excitation signals and the phase encoded signal magnetically induced in the rotor coil of the resolver, and produces an angular position signal having a duty cycle responsive to the phase difference between the received signals.
摘要翻译：旋转变压器通常用作角位置感测装置。这种解析器通常需要难以产生正弦波激励信号，以及广泛的解码电路，用于产生与角位置相关的输出信号。本发明装置利用发生器产生矩形波定时信号。逻辑电路接收定时信号并且响应地产生第一和第二矩形波激励信号，其被传送到旋转变压器的相应定子线圈。解码电路接收在解算器的转子线圈中磁感应的激励信号和相位编码信号中的一个，并且产生具有响应于接收信号之间的相位差的占空比的角位置信号。

5. 外观设计

USD384341S Vehicle computer monitoring system screen and display 失效
公开(公告)号：USD384341S
公开(公告)日：1997-09-30
申请号：US945459
申请日：1992-09-16
申请人： John P. Hoffman , Dennis A. Barney , Joseph G. Kozlevcar
设计人： John P. Hoffman , Dennis A. Barney , Joseph G. Kozlevcar

6. 发明授权

US5541806A Dual current sensing driver circuit with switching energization andflyback current paths 失效
标题翻译：具有开关通电和反激电流路径的双电流感测驱动电路
公开(公告)号：US5541806A
公开(公告)日：1996-07-30
申请号：US283758
申请日：1994-08-01
申请人： John P. Hoffman
发明人： John P. Hoffman
IPC分类号： H01H47/32 , H03K17/00 , H03K17/0814
CPC分类号： H01H47/325 , H03K17/08142 , H03K2217/0036
摘要： A driver circuit for controllably connecting an inductive load to a source of electrical power in response to an input control signal is provided. The inductive load includes an inductive winding of a solenoid. The driver circuit controllably connects and disconnects the inductive load to and from the source in response to a first control signal and controllably provides a discharge path for a flyback current of the inductive load in response to a second control signal. The driver circuit senses both the energizing current and the flyback current and responsively provides an energization path and a flyback discharge path in a non-overlapping manner.
摘要翻译：提供了用于响应于输入控制信号可控地将电感负载连接到电源的驱动电路。电感负载包括电磁线圈的感应绕组。驱动器电路响应于第一控制信号可控地将感性负载连接到电源负载和从源极断开，并且响应于第二控制信号可控地为感性负载的反激电流提供放电路径。驱动电路感应励磁电流和回扫电流，并且以不重叠的方式响应地提供通电路径和反激放电路径。

7. 发明授权

US5401004A Method and apparatus for installing a nozzle insert in a steelmaking ladle 失效
标题翻译：一种用于在钢炼钢包中安装喷嘴插件的方法和装置
公开(公告)号：US5401004A
公开(公告)日：1995-03-28
申请号：US237082
申请日：1994-05-03
申请人： Alvin M. Nestler , John P. Hoffman , John L. Hogan , Edward T. Witek
发明人： Alvin M. Nestler , John P. Hoffman , John L. Hogan , Edward T. Witek
IPC分类号： B22D41/50 , B22D41/56
CPC分类号： B22D41/50
摘要： A method and apparatus for inserting a nozzle into the discharge bore of a steelmaking vessel including a carriage and a clamp means for demountably attaching the nozzle to the carriage. The apparatus further includes means to move the carriage toward or away from the steelmaking vessel while at the same time rotating the nozzle about its longitudinal axis as it is pressed into the discharge bore.
摘要翻译：一种用于将喷嘴插入炼钢容器的排出孔中的方法和装置，其包括滑架和用于将喷嘴可拆卸地附接到滑架的夹紧装置。该装置还包括使滑架朝向或远离炼钢容器移动的装置，同时在被压入排放孔时同时使喷嘴绕其纵向轴线旋转。

8. 发明授权

US4982315A Voltage multiplier circuit 失效
标题翻译：电压倍增电路
公开(公告)号：US4982315A
公开(公告)日：1991-01-01
申请号：US495503
申请日：1990-03-19
申请人： John P. Hoffman
发明人： John P. Hoffman
IPC分类号： H02M3/07 , H03K17/687
CPC分类号： H03K17/6872 , H02M3/07
摘要： A signal generator is provided for delivering non-overlapping charge and discharge signals to a voltage multiplier circuit. The multiplier circuit has a discharge switch for receiving the discharge signal and connecting a booster capacitor in series with an input voltage source and in parallel with a storage capacitor, thereby transferring charge from the booster capacitor to a storage capacitor. The multiplier circuit further includes charge switch which receives the charge signal and delivers the input voltage potential to the booster capacitor for charging. The signal generator advantageously provides an interval of time between the charge and discharge signals, thereby preventing sporadic discharges from the booster capacitor and undesirable power losses.
摘要翻译：提供信号发生器用于将不重叠的充电和放电信号传送到电压倍增器电路。乘法器电路具有放电开关，用于接收放电信号，并将升压电容器与输入电压源串联并且与存储电容器并联，从而将电荷从升压电容器转移到存储电容器。乘法器电路还包括充电开关，其接收充电信号并将输入电压电势传送到用于充电的升压电容器。信号发生器有利地在充电和放电信号之间提供时间间隔，从而防止来自升压电容器的零星放电和不期望的功率损耗。

9. 发明授权

US5369392A Method and apparatus for indicating faults in switch-type inputs 失效
标题翻译：用于指示开关型输入故障的方法和装置
公开(公告)号：US5369392A
公开(公告)日：1994-11-29
申请号：US945452
申请日：1992-09-16
申请人： John P. Hoffman , Ricky D. Vance
发明人： John P. Hoffman , Ricky D. Vance
IPC分类号： G01D21/00 , B60K37/02 , G01D7/04 , G01D7/12 , G01M99/00 , G01R31/00 , G07C5/08 , B60Q1/00
CPC分类号： G01D7/12 , B60K37/02 , G01D7/04 , G01R31/006 , G07C5/0808 , G07C5/0825
摘要： Systems for diagnosing fault conditions in a plurality of inputs are useful in many applications. Advantageously, such systems allow a technician to quickly and clearly identify the fault condition. The subject invention includes a plurality of sensors to produce a plurality of sensor signals. Each of the sensor signals is in one of a normal state or a fault condition and has an associated pin number. A plurality of indicator lights are also each associated with one of the sensor signals. A display individually indicates each pin number associated with a sensor signal in the fault condition. Each of the indicator lights associated with one of the sensor signals in the fault condition is flashed. The indicator light associated with the sensor signal for which the associated pin number is indicated by the display is steadily illuminated.
摘要翻译：用于诊断多个输入中的故障状况的系统在许多应用中是有用的。有利地，这样的系统允许技术人员快速且清楚地识别故障状况。本发明包括多个传感器以产生多个传感器信号。每个传感器信号处于正常状态或故障状态之一，并且具有相关的引脚号。多个指示灯也各自与传感器信号中的一个相关联。显示器分别指示与故障状态下的传感器信号相关联的每个引脚号。与故障状态下的传感器信号之一相关联的每个指示灯闪烁。与传感器信号相关联的与显示相关联的引脚编号指示的指示灯稳定地亮起。

10. 发明授权

US5337470A Method and apparatus for removing a nozzle insert from a steelmaking ladle 失效
标题翻译：从炼钢钢包中去除喷嘴刀片的方法和装置
公开(公告)号：US5337470A
公开(公告)日：1994-08-16
申请号：US53924
申请日：1993-04-26
申请人： John P. Hoffman , Alvin M. Nestler , Edward T. Witek , Donald J. Idstein
发明人： John P. Hoffman , Alvin M. Nestler , Edward T. Witek , Donald J. Idstein
IPC分类号： B22D41/50 , B23P19/00
CPC分类号： B22D41/50 , Y10T29/49822 , Y10T29/5383 , Y10T29/5387
摘要： A nozzle extraction tool for removing a worn nozzle insert from a steelmaking vessel. The nozzle extraction tool including a support frame, a gripper assembly, and a drive piston for applying a force to the gripper assembly. The gripper assembly includes pivotal gripper arms and a rod assembly for pivoting and rotating the gripper assembly 360.degree. about the longitudinal axis of the worn nozzle insert. The rod assembly enables the gripper arms to be securely seated against the uneven surfaces of the worn discharge bore extending through the nozzle insert.
摘要翻译：一种用于从炼钢容器中去除磨损的喷嘴刀片的喷嘴提取工具。喷嘴提取工具包括支撑框架，夹持器组件和用于向夹具组件施加力的驱动活塞。夹持器组件包括枢转夹持臂和杆组件，用于围绕磨损的喷嘴插入件的纵向轴线枢转和旋转夹持器组件360°。杆组件使得夹持臂可靠地抵靠延伸穿过喷嘴插入件的磨损排放孔的不平坦表面。

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