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    • 6. 发明授权
    • Fail as-is hydraulic actuator
    • 液压执行器故障
    • US06206338B1
    • 2001-03-27
    • US09470409
    • 1999-12-22
    • Len Albert TrailTimothy J. OttemanRichard Blair
    • Len Albert TrailTimothy J. OttemanRichard Blair
    • F16K3500
    • E21B34/02F16K31/122
    • A hydraulic actuator for a valve that fails as-is in the event of control line failure. The actuator has a housing carrying an actuator piston for actuating the valve open or closed. An elongate gripper shaft extends upward from the actuator piston. A collet member is carried within the housing and adapted to engage the gripper shaft when moved upward relative to the housing. The collet member is biased upward by a spring. A release piston abutting the dog members prevents their upward movement when actuated to a lower position. The release piston is supplied with the same hydraulic fluid pressure as the actuator piston. If pressure is removed, the spring moves the collet member into locking engagement with the shaft.
    • 用于阀门的液压执行器,在控制线故障的情况下故障。 致动器具有承载用于致动阀打开或关闭的致动器活塞的壳体。 细长的夹持器轴从致动器活塞向上延伸。 夹套构件被承载在壳体内并且适于当相对于壳体向上移动时接合夹持器轴。 夹头构件被弹簧向上偏置。 抵靠狗构件的释放活塞在致动到较低位置时防止其向上运动。 释放活塞被提供与致动器活塞相同的液压流体压力。 如果压力消除,弹簧将夹头构件与轴锁定接合。
    • 7. 发明授权
    • Arrangement for public safety answering points
    • 公安安全答复点安排
    • US6101240A
    • 2000-08-08
    • US174363
    • 1998-10-15
    • Mark Richard BlairEugene GerberMark Thomas MillerTed MoulosChristopher F. RobbinsDonald Robert Ziemann
    • Mark Richard BlairEugene GerberMark Thomas MillerTed MoulosChristopher F. RobbinsDonald Robert Ziemann
    • H04M11/04H04Q11/04
    • H04Q11/0457H04M11/04
    • Emergency service calls, such as 911 calls, are routed to specially trained operators at public service answering points (PSAPs). A PSAP switch, a special focus private branch exchange (PBX), is provided for interconnecting incoming PSAP calls to a PSAP position staffed by a PSAP operator. The PSAP position comprises a telephone facility for talking to the caller, and a PC for accessing and displaying data about the caller, i.e., the caller's address, and any special characteristics such as a caller's disability, etc. An ISDN, (Integrated Services Digital Network), line connects a tandem access switch used for routing PSAP calls with the PSAP switch. The ISDN facility is used for conveying information about the caller for display at the PC of the answering PSAP position. Advantageously, this arrangement provides an integrated system for communicating both the voice of the caller, and the data describing the caller to a PSAP operator.
    • 紧急服务电话(如911电话)被路由到公共服务应答点(PSAP)的经过专门培训的运营商。 提供PSAP交换机,专用专用交换机(PBX),用于将进入的PSAP呼叫互连到由PSAP运营商配置的PSAP位置。 PSAP位置包括用于与呼叫者通话的电话设备,以及用于访问和显示关于呼叫者的数据的PC,即呼叫者的地址,以及诸如呼叫者的残障等的任何特殊特征。ISDN(综合业务数字 网络),线路连接用于将PSAP呼叫路由到PSAP交换机的串联接入交换机。 ISDN设施用于传送关于呼叫者的信息,以在PC的应答PSAP位置显示。 有利地,这种布置提供了一种用于将呼叫者的语音和将呼叫者描述为PSAP运营商的数据进行通信的集成系统。