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1. 发明授权

US4110563A Traffic sensitive modulation system 失效
标题翻译：交通敏感调制系统
公开(公告)号：US4110563A
公开(公告)日：1978-08-29
申请号：US779500
申请日：1977-03-21
申请人： Peter J. May , Theodore M. Stump
发明人： Peter J. May , Theodore M. Stump
IPC分类号： H04J3/02 , H04J3/17 , H04J3/04
CPC分类号： H04J3/02 , H04J3/17
摘要： A modulation system for use in analog signal transmission processes input information in multiple analog communication channels, for multiplexing onto a data channel. The system includes:A delta modulator and logic circuitry connected therewith to suppress data transmission when the modulator produces alternating 1's and 0's and to signal activation of pulse transmission when a successive sequence of at least two 1's and two 0's is transmitted by the modulator.
摘要翻译：用于模拟信号传输的调制系统在多个模拟通信信道中输入信息，用于复用到数据信道上。该系统包括：

2. 发明授权

US4192871A Chemical compounds 失效
标题翻译：化合物
公开(公告)号：US4192871A
公开(公告)日：1980-03-11
申请号：US907915
申请日：1978-05-22
申请人： Gordon H. Phillipps , Peter J. May , Barry E. Ayres
发明人： Gordon H. Phillipps , Peter J. May , Barry E. Ayres
IPC分类号： C07J3/00 , C07J5/00 , C07J7/00 , C07J13/00 , C07J17/00 , C07J31/00 , C07J41/00 , C07J43/00 , C07J63/00 , C07J71/00
CPC分类号： C07J13/005 , C07J17/00 , C07J3/005 , C07J31/006 , C07J41/0088 , C07J41/0094 , C07J43/003 , C07J5/0015 , C07J63/00 , C07J7/003 , C07J71/001
摘要： Pregnanes and androstanes are described which essentially possess a 3.alpha.-hydroxy group, a 5.alpha.-hydrogen atom or a 4.5- or 5,6-double bond, a 17.alpha.-hydrogen atom and an 11.beta.-aminoester group. Other optional substituents or double bonds may be present. The compounds have anaesthetic activity.
摘要翻译：描述了基本上具有3α-羟基，5α-氢原子或4.5-或5,6-双键，17α-氢原子和11β-氨基酯基团的孕烷和雄甾烷基。可以存在其它任选的取代基或双键。该化合物具有麻醉活性。

3. 发明授权

US3987375A Transmission bridge exhibiting reduced distortion 失效
标题翻译：传输桥具有减小的失真
公开(公告)号：US3987375A
公开(公告)日：1976-10-19
申请号：US561756
申请日：1975-03-25
申请人： Peter J. May , Matyas Hugyecz
发明人： Peter J. May , Matyas Hugyecz
IPC分类号： H03H7/01 , H03H7/38 , H04Q3/00 , H03H7/04 , H03H5/12 , H03H7/14
CPC分类号： H03H7/38 , H03H7/01 , H03H7/1758 , H04Q3/00
摘要： A telephone transmission bridge including a transformer having primary and secondary windings, connected between first and second input leads and first and second output leads, respectively, has a varistor connected in series with a relatively small number of tertiary windings wound around the transformer core. The tertiary windings and varistor present a high AC impedance to signals transmitted via the input and output leads, thereby permitting AC signals to be transmitted freely via the primary and secondary windings. When transient DC signals are impressed on the input and output leads the tertiary windings and varistor exhibit a low DC impedance, the varistor conducts effectively short circuiting the primary or secondary windings to which the transient signals are transmitted and the transient signals are prevented from being transmitted through the transmission bridge.
摘要翻译：包括分别连接在第一和第二输入引线与第一和第二输出引线之间的具有初级和次级绕组的变压器的电话传输桥具有与缠绕在变压器芯上的相对较少数量的三级绕组串联连接的变阻器。三级绕组和变阻器对通过输入和输出引线传输的信号具有高AC阻抗，从而允许AC信号通过初级和次级绕组自由传输。当输入和输出引起瞬态直流信号时，三次绕组和变阻器呈现低的直流阻抗，因此，压敏电阻有效地导通瞬态信号传输的初级或次级绕组短路，防止瞬态信号传输通过传输桥。

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