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9 条记录 (耗时 0.019 秒)

    Proportional power demand audio amplifier control
    1.
    发明授权
    Proportional power demand audio amplifier control 失效
    比例功率需求音频放大器控制

    公开(公告)号：US4683591A

    公开(公告)日：1987-07-28

    申请号：US728408

    申请日：1985-04-29

    申请人： Brian D. Dawson ,  James R. Leacock

    发明人： Brian D. Dawson ,  James R. Leacock

    IPC分类号： H03F1/52 ,  H03F3/21 ,  H03F3/68 ,  H03F3/72 ,  H03F21/00

    CPC分类号： H03F3/72 ,  H03F1/52 ,  H03F3/211 ,  H03F3/68

    摘要： A proportional audio power demand system has a plurality of speaker banks and a plurality of amplifiers. Each speaker bank has at least one speaker. The system also has at least one audio channel and each amplifier and speaker bank can be selectively coupled to the audio channel. The system includes a controller which causes at least one amplifier and speaker bank to be coupled to the channel. The system also includes a sensor which senses the power output of the amplifier. The sensor is coupled to the amplifier and controller and the controller responds to the sensed power output of the amplifier to determine when to cause an additional amplifier to be coupled to the channel.

    摘要翻译： 比例音频功率需求系统具有多个扬声器组和多个放大器。 每个扬声器组至少有一个扬声器。 该系统还具有至少一个音频通道，并且每个放大器和扬声器组可以选择性地耦合到音频通道。 该系统包括使至少一个放大器和扬声器组耦合到该通道的控制器。 该系统还包括感测放大器的功率输出的传感器。 传感器耦合到放大器和控制器，并且控制器响应于感测到的放大器的功率输出，以确定何时使附加放大器耦合到通道。

    Composite wastewater sampler
    4.
    发明授权
    Composite wastewater sampler 失效
    复合废水取样器

    公开(公告)号：US5341690A

    公开(公告)日：1994-08-30

    申请号：US421559

    申请日：1989-10-13

    申请人： Brian D. Dawson ,  Richard D. Hartz

    发明人： Brian D. Dawson ,  Richard D. Hartz

    IPC分类号： G01N1/10 ,  G01N1/18 ,  G01N1/20 ,  G01N33/18 ,  G01N1/14

    CPC分类号： G01N1/2035 ,  G01N1/18 ,  G01N2001/1043 ,  G01N2001/1093 ,  G01N2001/185 ,  G01N33/18

    摘要： A composite wastewater sampler includes a flow-through-chamber having an inlet port and an outlet port with a path between them that gradually increases in depth and width and then decreases in width. It is shaped to cause fluid to (1) flow from the inlet port; (2) drop to a lower level of flow within the flow-through-chamber; (3) gradually adjust in cross-sectional shape to the outlet port; and (4) flow back into a wastewater pipe. A sampling nozzle extends into the flow-through-chamber adjacent to the inlet port and within the path of the downwardly flowing wastewater so that wastewater exiting the port contacts the nozzle and flows downwardly across it.

    摘要翻译： 复合废水采样器包括具有入口端口和出口端口的流通室，其中它们之间的路径在深度和宽度上逐渐增加，然后在宽度上减小。 其形状是使流体（1）从入口流出; （2）在流通室内下降到较低水平的流动; （3）将横截面形状逐渐调整到出口; （4）流回废水管道。 采样喷嘴延伸到邻近入口端口并且在向下流动的废水的路径内的流通室中，使得离开端口的废水接触喷嘴并向下流过它。

    Detection system with randomized transmissions
    5.
    发明授权
    Detection system with randomized transmissions 失效
    随机发射检测系统

    公开(公告)号：US4734680A

    公开(公告)日：1988-03-29

    申请号：US826726

    申请日：1986-02-06

    申请人： Stacy E. Gehman ,  Kevin T. Ruddell ,  Brian D. Dawson

    发明人： Stacy E. Gehman ,  Kevin T. Ruddell ,  Brian D. Dawson

    IPC分类号： G08B25/10 ,  G08B29/14 ,  G08B1/08

    CPC分类号： G08B29/14 ,  G08B25/10

    摘要： A detection system having sending units for sending data signals representative of a condition, such as fire, smoke, intrusion, battery condition, or an emergency, to a central receiving unit. The sending units include a microcomputer which generates a pseudo-random number, waits for a number of cycle periods equal to the pseudo-random number, then activates a transmitter to send a data signal to the receiving unit. The randomized transmission prevents the synchronized clashing of transmitters.

    摘要翻译： 一种具有发送单元的检测系统，用于向中央接收单元发送表示诸如火灾，烟雾，入侵，电池状况或紧急情况的状况的数据信号。 发送单元包括产生伪随机数的微型计算机，等待与伪随机数相等的周期周期数，然后激活发送器以向接收单元发送数据信号。 随机化的传输防止发射机的同步冲突。

    Composite wastewater sampler
    6.
    发明授权
    Composite wastewater sampler 失效
    复合废水取样器

    公开(公告)号：US06178831B2

    公开(公告)日：2001-01-30

    申请号：US08882089

    申请日：1997-06-25

    申请人： Brian D. Dawson ,  Richard D. Hartz

    发明人： Brian D. Dawson ,  Richard D. Hartz

    IPC分类号： G01N120

    CPC分类号： G01N1/2035 ,  G01N1/18 ,  G01N33/18 ,  G01N2001/1043 ,  G01N2001/1093 ,  G01N2001/185

    摘要： A composite wastewater sampler includes a flow-through-chamber having an inlet port and an outlet port with a path between them that gradually increases in depth and width and then decreases in width. It is shaped to cause fluid to: (1) flow from the inlet port; (2) drop to a lower level of flow within the flow-through-chamber; (3) gradually adjust in cross-sectional shape to the outlet port; and (4) flow back into a wastewater pipe. A sampling nozzle extends into the flow-through-chamber adjacent to the inlet port and within the path of the downwardly flowing wastewater so that wastewater exiting the port contacts the nozzle and flows downwardly across it.

    摘要翻译： 复合废水采样器包括具有入口端口和出口端口的流通室，其中它们之间的路径在深度和宽度上逐渐增加，然后在宽度上减小。 其形状是使流体：（1）从入口流出; （2）在流通室内下降到较低水平的流动; （3）将横截面形状逐渐调整到出口; （4）流回废水管道。 采样喷嘴延伸到邻近入口端口并且在向下流动的废水的路径内的流通室中，使得离开端口的废水接触喷嘴并向下流过它。

    Life safety audio system having a voice synthesizer and a constant volume telephone network
    8.
    发明授权
    Life safety audio system having a voice synthesizer and a constant volume telephone network 失效
    具有语音合成器和恒定电话网络的生命安全音频系统

    公开(公告)号：US4682348A

    公开(公告)日：1987-07-21

    申请号：US734554

    申请日：1985-05-16

    申请人： Brian D. Dawson ,  James R. Leacock

    发明人： Brian D. Dawson ,  James R. Leacock

    IPC分类号： G08B25/08 ,  H04M11/04

    CPC分类号： G08B25/08 ,  H04M11/045

    摘要： A life safety system for monitoring a building has a plurality of detectors for detecting alarm conditions located throughout the building, a plurality of speakers located throughout the building, a source of pre-stored voice messages which can be broadcast over the speakers, and a telephone network. The improvement is a voice synthesizer for providing the source of pre-stored voice messages and a constant volume telephone system. The constant volume telephone system has a telephone line and a plurality of telephones which can be connected to the telephone line, and a power supply having an adjustable output voltage which provides the voltage for the telephone line. A sensing and adjusting circuit senses the number of telephones off-hook and causes the power supply to be adjusted in response to the number of telephones off-hook.

    摘要翻译： 用于监测建筑物的生命安全系统具有多个用于检测整个建筑物周围的报警状况的检测器，位于整个建筑物内的多个扬声器，可以在扬声器上广播的预先存储的话音消息源，以及电话 网络。 该改进是用于提供预存储的语音消息的源和一个恒定音量的电话系统的语音合成器。 恒定电话系统具有可以连接到电话线的电话线和多个电话，以及具有可调节输出电压的电源，该电源为电话线提供电压。 感测和调节电路检测电话摘机的数量，并根据电话摘机次数调节电源。

    Composite wastewater sampler
    9.
    发明授权
    Composite wastewater sampler 失效
    复合废水取样器

    公开(公告)号：US5652397A

    公开(公告)日：1997-07-29

    申请号：US424226

    申请日：1995-04-19

    申请人： Brian D. Dawson ,  Richard D. Hartz

    发明人： Brian D. Dawson ,  Richard D. Hartz

    IPC分类号： G01N1/10 ,  G01N1/18 ,  G01N1/20 ,  G01N33/18

    CPC分类号： G01N1/2035 ,  G01N1/18 ,  G01N2001/1043 ,  G01N2001/1093 ,  G01N2001/185 ,  G01N33/18

    摘要： A composite wastewater sampler includes a flow-through-chamber having an inlet port and an outlet port with a path between them that gradually increases in depth and width and then decreases in width. It is shaped to cause fluid to: (1) flow from the inlet port; (2) drop to a lower level of flow within the flow-through-chamber; (3) gradually adjust in cross-sectional shape to the outlet port; and (4) flow back into a wastewater pipe. A sampling nozzle extends into the flow-through-chamber adjacent to the inlet port and within the path of the downwardly flowing wastewater so that wastewater exiting the port contacts the nozzle and flows downwardly across it.

    摘要翻译： 复合废水采样器包括具有入口端口和出口端口的流通室，其中它们之间的路径在深度和宽度上逐渐增加，然后在宽度上减小。 其形状是使流体：（1）从入口流出; （2）在流通室内下降到较低水平的流动; （3）将横截面形状逐渐调整到出口; （4）流回废水管道。 采样喷嘴延伸到邻近入口端口并且在向下流动的废水的路径内的流通室中，使得离开端口的废水接触喷嘴并向下流过它。