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    • 21. 发明授权
    • Ruggedized photomultiplier tube and optical coupling in armored detector
    • 坚固的光电倍增管和铠装检测器中的光耦合器
    • US06465788B1
    • 2002-10-15
    • US09626744
    • 2000-07-26
    • Dwight Medley
    • Dwight Medley
    • G01T120
    • E21C35/22E21C35/24H01J43/04H01J43/28
    • A photomultiplier tube and a method and apparatus for molding an optical coupler thereto are described. An optical coupler molding fixture includes a frame and a frame base. A photomultiplier tube is positioned within the frame between a spring and a shim. The optical coupler is formed with a mold which is positioned against the shim. A cavity is created radially interior to the shim between the photomultiplier tube and the mold. The optical coupler is molded to a faceplate of the photomultiplier tube with the fixture oriented so that its longitudinal axis L is parallel to the ground. A clamping structure presses the mold against the shim and provides the optical coupler material a non-leak space in which to cure. The optical coupler material is injected into the mold through a fill hole, and may be injected at ambient temperature. Curing time may range from one week at ambient temperatures to four hours at 65° C. The mold can be machined to create any form desired for the optical coupler. The shim can be sized and configured to allow for adjustment in the thickness of the optical coupler. The optical coupler may be as thin as less than 0.015 inches in thickness. If, for example, a thicker optical coupler is desired, the shim may be made thicker. The edge of the photomultiplier tube housing which abuts the shim is checked for its perpendicularity to the longitudinal axis L. Without perpendicularity, proper alignment of the photomultiplier tube is less likely.
    • 对光电倍增管及其光耦合器的成型方法和装置进行说明。 光耦合器成型夹具包括框架和框架基座。 光电倍增管位于框架内,位于弹簧和垫片之间。 光耦合器形成有抵靠垫片定位的模具。 在光电倍增管和模具之间的垫片的径向内部形成空腔。 光耦合器被模制到光电倍增管的面板上,其中夹具被定向成使得其纵向轴线L平行于地面。 夹紧结构将模具按压在垫片上,并为光学耦合器材料提供不渗漏空间以固化。 光耦合器材料通过填充孔注入模具中,并且可以在环境温度下注入。 固化时间可以在环境温度下从一周到65℃的四小时。可以对模具进行加工以产生光学耦合器所需的任何形式。 垫片的尺寸和构造可以调节光耦合器的厚度。 光耦合器的厚度可以小到0.015英寸。 如果例如需要较厚的光耦合器,则垫片可以被制成较厚的。 检查邻近垫片的光电倍增管外壳的边缘是否垂直于纵向轴线L.无垂直的情况下,光电倍增管的正确对准不太可能。
    • 25. 发明授权
    • Method and apparatus for controlling water sprays of an underground
extraction machine
    • 控制地下提取机喷水的方法和装置
    • US3980338A
    • 1976-09-14
    • US530036
    • 1974-12-05
    • Karl-Heinz Weber
    • Karl-Heinz Weber
    • E21C35/22
    • E21C35/22
    • Water is discharged from spray nozzles toward cutting tools of a drum-cutting mining machine only during the actual time when material is released from the face of a mine. A pulse generator is driven by the traversing drive of the mining machine. The pulse output is fed to a controller which may include a computer that also receives an enabling signal produced by the secondary winding of a transformer in the power supply lines for the drive motor which is used to rotate the cutting drums of the mining machine. The enabling signal indicates an actual mining operation on the basis of the flow of current to the drive motor about a predetermined idle current load. Additional signals are fed to the controller such as a signal representing properties of the mine materials, and a signal representing characteristics of the drive system for the mining machine such as the dimensions of the capstan's chain drive wheel. The controller produces a signal which is used to operate a servo-type flow control valve in water supply lines coupled to the spray nozzles. Instead of a single flow control valve, there may be a plurality of valves arranged in parallel water lines and controlled by a stepping mechanism to open the valves in succession and increase the quantity of water discharged by the spray nozzles.
    • 只有在材料从矿井的表面释放的实际时间内,水才能从喷嘴向滚筒式切割机的切割工具排出。 脉冲发生器由采矿机的横动驱动驱动。 脉冲输出被馈送到控制器,该控制器可以包括计算机,该计算机还接收由驱动马达的电源线中的变压器的次级绕组产生的使能信号,该驱动电机用于旋转采矿机的切割滚筒。 使能信号基于关于预定的空载电流负载对驱动电动机的电流的流动来指示实际的采矿操作。 额外的信号被馈送到控制器,例如表示矿井材料的特性的信号,以及表示采矿机驱动系统的特征的信号,例如绞盘链传动轮的尺寸。 控制器产生用于在与喷嘴相连的供水管线中操作伺服型流量控制阀的信号。 代替单个流量控制阀,可以有多个排列成平行水线的阀,并由步进机构控制,以连续打开阀门并增加喷嘴排出的水量。