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1. 发明授权

US4776006A Multiplexed data channel controlled telephone system 失效
标题翻译：多路复用数据通道控制电话系统
公开(公告)号：US4776006A
公开(公告)日：1988-10-04
申请号：US41567
申请日：1987-04-23
申请人： Timothy N. Comerford , Jan R. Holliday , Michael J. McLane
发明人： Timothy N. Comerford , Jan R. Holliday , Michael J. McLane
IPC分类号： H04Q3/58 , H04M1/723 , H04M9/02 , H04M1/72 , H04M9/10
CPC分类号： H04M9/027 , H04M1/723
摘要： A multiplexed data channel telephone system comprising a master station (221) and one or more remote stations (222) is disclosed. Each station (221, 222) is bridged, in a parallel electrical connection, onto a wire-pair (201) that extends from the stations to a telephone switching system. Each station (221, 222) includes a voiceband line interface (110, 310) for connecting to the wire-pair (201) at voiceband frequencies, and a radio frequency line interface (700, 800) for connecting to the wire-pair (201) at radio frequencies. Each station further includes multiplexer and demultiplexer equipment (500, 600) for frequency shifting a data channel between baseband and rf. Amplitude modulation and half-duplex transmission are used in the data channel. Telephone status and control information, including ringing and answer control, are exchanged between controllers (160, 360) via the data channel. Remote stations (222) minimize the amount of equipment required by using the data channel to control common equipment at the master station (221) that interacts with incoming telephone lines (201, 202).
摘要翻译：公开了一种包括主站（221）和一个或多个远程站（222）的复用数据信道电话系统。每个站（221,222）以并联电连接桥接到从站延伸到电话交换系统的有线对（201）上。每个站（221,222）包括用于以语音频带频率连接到线对（201）的语音频带线路接口（110,310）和用于连接到线对的射频线路接口（700,800） 201）。每个站还包括用于在基带和rf之间频移数据信道的多路复用器和解复用器设备（500,600）。在数据通道中使用幅度调制和半双工传输。电话状态和控制信息，包括振铃和应答控制，经由数据信道在控制器（160,360）之间交换。远程站（222）使通过数据通道控制主站（221）与进入的电话线（201,202）相互作用的公用设备所需的设备的数量最小化。

2. 发明授权

US5466205A Traction device with a self clamping retainer 失效
标题翻译：牵引装置带有自锁保持架
公开(公告)号：US5466205A
公开(公告)日：1995-11-14
申请号：US291363
申请日：1994-08-16
申请人： Michael J. McLane , Maxine L. Duckworth
发明人： Michael J. McLane , Maxine L. Duckworth
IPC分类号： A61H1/02 , A63B26/00
CPC分类号： A61H1/0218 , A61H2203/0493
摘要： A traction device including, in combination, an elongated flat surface of a length and width to accommodate a human patient in a supine position, the surface defined by a foot-end and a head-end arranged in a spaced-apart relationship, device for elevating the foot-end above the head-end in a tilted fashion, and a foot retainer pivotally attached about the foot-end for retaining the patient's feet therein when the patient is in traction, wherein the elongated flat surface exhibits an extremely low coefficient of friction for allowing the patient's body to stretch and slide freely downward therealong under its own weight when pitched in a head-down position.
摘要翻译：一种牵引装置，其组合包括长度和宽度的细长平坦表面，以容纳处于仰卧位置的人类患者，所述表面由以足够间隔的关系布置的脚端和头端限定，所述装置用于将脚端以倾斜的方式升高在头端上方，并且脚保持器围绕脚端枢转地附接，以在患者处于牵引状态时将患者的脚保持在其中，其中细长平坦表面呈现极低的系数用于允许患者身体在俯仰位置时以其自身的重量自由地向下伸展和滑动的摩擦。

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