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1. 发明授权

US5544195A High-bandwidth continuous-flow arc furnace 失效
标题翻译：高带宽连续电弧炉
公开(公告)号：US5544195A
公开(公告)日：1996-08-06
申请号：US359158
申请日：1994-12-19
申请人： David E. Hardt , Steven G. Lee
发明人： David E. Hardt , Steven G. Lee
IPC分类号： B23K28/00 , F27D3/00
CPC分类号： B23K28/003
摘要： A high-bandwidth continuous-flow arc furnace for stream welding applications includes a metal mass contained in a crucible having an orifice. A power source charges an electrode for generating an arc between the electrode and the mass. The arc heats the metal mass to a molten state. A pressurized gas source propels the molten metal mass through the crucible orifice in a continuous stream. As the metal is ejected, a metal feeder replenishes the molten metal bath. A control system regulates the electrode current, shielding gas pressure, and metal source to provide a continuous flow of molten metal at the crucible orifice. Independent control over the electrode current and shield gas pressure decouples the metal flow temperature and the molten metal flow rate, improving control over resultant weld characteristics.
摘要翻译：用于流焊接应用的高带宽连续流弧炉包括包含在具有孔口的坩埚中的金属质量。电源为在电极和质量之间产生电弧的电极充电。电弧将金属块加热到熔融状态。加压气体源以连续的流推动熔融金属物质通过坩埚孔。当金属被排出时，金属进料器补充熔融金属浴。控制系统调节电极电流，保护气体压力和金属源，以在坩埚孔处提供连续的熔融金属流。对电极电流和屏蔽气体压力的独立控制使金属流动温度和熔融金属流速分离，从而改善对合金焊接特性的控制。

2. 发明授权

US5276913A Phase-locked-loop circuit for radio transceiver 失效
标题翻译：无线电收发器的锁相环电路
公开(公告)号：US5276913A
公开(公告)日：1994-01-04
申请号：US796975
申请日：1991-11-25
申请人： Steven G. Lee , Louis J. Vannatta
发明人： Steven G. Lee , Louis J. Vannatta
IPC分类号： H04B1/44 , H04B1/40 , H03L7/00 , H04B7/00
CPC分类号： H04B1/44
摘要： A phase-locked-loop circuit for a radio transceiver operative to transmit and to receive modulated signals during nonconcurrent time periods. During time periods in which the radio transceiver is to generate and to transmit a modulated signal, the phase-locked-loop circuit is connected to the transmitter portion of the transceiver. During time periods in which the radio transceiver is to receive a modulated signal, the phase-locked-loop circuit is connected to the receiver portion of the transceiver. A switch, preferably comprised of a multiplexer, alternately connects the phase-locked-loop with the transmitter portion and the receiver portion of the transceiver.
摘要翻译：一种用于无线电收发机的锁相环电路，用于在非并发时间段期间发射和接收调制信号。在无线电收发器要生成的时间段和发送调制信号的时间段内，锁相环电路连接到收发器的发射机部分。在无线电收发器要接收调制信号的时间段期间，锁相环电路连接到收发器的接收器部分。优选地由多路复用器组成的开关交替地将锁相环与收发器的发射器部分和接收器部分连接。

3. 发明授权

US5701589A Method for adjusting reference frequencies in a communication system 失效
标题翻译：调整通信系统中参考频率的方法
公开(公告)号：US5701589A
公开(公告)日：1997-12-23
申请号：US246650
申请日：1994-05-20
申请人： Steven G. Lee , Brian D. Iehl , Omer Manya , Michael J. Schellinger , Robert F. D'Avello
发明人： Steven G. Lee , Brian D. Iehl , Omer Manya , Michael J. Schellinger , Robert F. D'Avello
IPC分类号： H04Q7/38 , H03J7/02 , H04B7/26 , H04Q7/20
CPC分类号： H04B7/26 , H03J7/02
摘要： A method generally improves the frequency accuracy in a communications system without requiring the use of accurate frequency references in all of the stations or types of stations. An accurate frequency reference is utilized in one of the stations or station types. The reference frequencies of the remaining stations or station types can be adjusted based upon the accurate reference frequency in one of the stations.
摘要翻译：一种方法通常提高了通信系统的频率精度，而不需要在所有站点或类型的站中使用精确的频率参考。在一个站或站类型中使用精确的频率参考。可以基于其中一个站中的精确参考频率来调整剩余站或站类型的参考频率。

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