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    • 7. 发明授权
    • Homogeneous screening nozzle
    • 均匀筛网喷嘴
    • US6045615A
    • 2000-04-04
    • US14807
    • 1998-01-28
    • Alvin W. BuecheleJohn T. ButlerPhilo B. HodgeDavid C. Polgrean
    • Alvin W. BuecheleJohn T. ButlerPhilo B. HodgeDavid C. Polgrean
    • H05K1/09H05K3/12B05C5/00
    • H05K3/1233H05K1/092H05K2203/0126
    • A paste dispensing system for dispensing paste to a substrate such as a ceramic greensheet or other electronic component substrate comprises a reservoir for holding the paste and a nozzle housing in fluid communication with the reservoir and having an opening therein through which the paste is dispensed. The nozzle housing has disposed therein a rotatable slotted shutter which is in fluid communication with the reservoir and which has an auger disposed in the shutter. The auger when actuated, draws paste from the reservoir into the shutter, advances the liquid material through the shutter and circulates the paste back to the reservoir. When it is desired to dispense the paste, the shutter is rotated so that the slot in the shutter communicates with a slot in a nozzle plate connected to the nozzle housing through which slot the paste is dispensed. The paste is continually circulated through the paste dispensing system by the auger whether or not paste is being dispensed. A paste cartridge is also provided for use with the paste dispensing system and is easily attached or removed from the system reservoir avoiding downtime in the paste dispensing operation. A method is also provided for applying a layer of paste to a substrate using the paste dispensing system of the invention.
    • 用于将糊剂分配到诸如陶瓷毛坯或其它电子部件基底的基底的糊剂分配系统包括用于保持浆料的储存器和与储存器流体连通并具有其中分配糊料的开口的喷嘴壳体。 喷嘴壳体中设置有可旋转的开槽的闸板,其与储存器流体连通并且具有布置在闸门中的螺旋推运器。 螺旋钻启动时,将油膏从油箱中拉出,进入快门,使液体材料通过快门并将浆料循环回储存器。 当需要分配浆料时,快门旋转,使得快门中的狭槽与连接到喷嘴壳体的喷嘴板中的槽连通,通过该分配槽将分配浆料。 无论浆料是否被分配,浆料都通过螺旋钻不断地通过浆料分配系统循环。 还提供了用于膏剂分配系统的糊料盒,并且容易地从系统储存器附接或移除,从而避免了糊剂分配操作中的停机时间。 还提供了一种使用本发明的糊剂分配系统将一层浆料施加到基材的方法。
    • 8. 发明授权
    • Railroad switch stand
    • 铁路开关架
    • US4824054A
    • 1989-04-25
    • US214894
    • 1988-06-28
    • Edward KohakeJohn T. Butler
    • Edward KohakeJohn T. Butler
    • B61L5/02
    • B61L5/02
    • A railroad switch stand is provided by which a switchman can easily and conveniently throw a railroad switch while standing, which automatically locks in respective open and thrown positions, and which automatically disconnects from the switch throw rod in the event excessive longitudinal force is applied to the throw rod, the preferred switch stand includes a hand-operable, rotatable throw wheel; means mounting the wheel at about normal chest height; structure for translating rotation of the wheel into longitudinal movement of the rod; and means for releasably locking the wheel in respective, alternate open and thrown positions. In use, a switchman releases the locking means and rotates the throw wheel through one revolution in order to throw the switch to its alternate position at which point the locking means automatically engages the throw wheel to prevent further rotation thereof.
    • 提供一种铁路开关支架,通过该铁路开关支架,开关人员可以方便地方便地在静置时投掷铁路开关,这自动锁定在相应的打开和抛出位置,并且在过大的纵向力施加到开关杆上时自动断开 推杆,优选的开关支架包括手动可转动的抛光轮; 意味着将车轮安装在大约正常的胸部高度; 用于将轮的旋转平移到杆的纵向运动的结构; 以及用于将轮可释放地锁定在相应的,交替的打开和抛出位置的装置。 在使用中,切换器释放锁定装置并使投掷轮旋转一圈,以便将开关投入到其交替位置,在该位置处,锁定装置自动接合投掷轮以防止其进一步旋转。