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    • 6. 发明授权
    • Screen printing apparatus
    • 丝网印刷设备
    • US4216717A
    • 1980-08-12
    • US892372
    • 1978-03-31
    • Charles E. HallRoyston Moore
    • Charles E. HallRoyston Moore
    • B41F15/08B41F15/40H05K3/12B41F15/42F16H25/10F16H25/20
    • B41F15/0813B41F15/40H05K3/1216Y10T74/18312Y10T74/18992
    • Screen printing apparatus incorporating drive means for a squeegee comprising a drive motor, a lead screw rotatable by the motor and a rider for the lead screw, said rider being coupled to a mounting for the squeegee preferably through stroke adjustment means and the lead screw having two oppositely handed threads thereon such that rotation of the motor causes reciprocating motion of the rider longitudinally of the lead screw at substantially uniform speed.Adjusting means to adjust the distance between two members such as a printing head of screen printing apparatus and a table on which articles to be printed can be laid, comprising a pair of coaxial shafts, eccentric members secured on the shafts, bushes secured to respective ones of said members and means to rotate the shaft such that the eccentrics when rotated in the bushes cause the members to move relatively to one another by the sum of the eccentricity of the two eccentrics having regard to the angle through which they are rotated.
    • 丝网印刷装置包括用于刮板的驱动装置,该驱动装置包括驱动马达,由马达旋转的导螺杆和用于导螺杆的骑手,所述骑手优选地通过行程调节装置联接到用于刮板的安装件,并且具有两个 使得电动机的旋转使得电动机的螺杆的纵向往复运动以大致均匀的速度导致。 用于调整丝网印刷装置的打印头和打印物品的两个部件之间的距离的调节装置,包括一对同轴轴,固定在轴上的偏心部件,固定在各个轴上的衬套 的所述构件和用于使所述轴旋转的装置,使得当在所述衬套中旋转时所述偏心件考虑到它们被旋转的角度,所述构件相对于所述两个偏心件的偏心之和相对移动。
    • 8. 发明授权
    • Method for making corrosion and abrasion resistant knife gate and other
valve types
    • 腐蚀和耐磨刀门及其他类型阀门的制造方法
    • US5223202A
    • 1993-06-29
    • US660843
    • 1991-02-26
    • Charles E. Hall
    • Charles E. Hall
    • B29C33/00B29C33/48B29C45/14B29C45/26B29C70/74
    • B29C45/14B29C33/0033B29C33/48B29C45/26B29C70/74B29L2031/7506
    • A method and apparatus for manufacturing a bidirectional, corrosion and abrasion resistant gate valve body. In one embodiment, the gate valve body, including flange seals and a liner, are produced in a single molding operation. A mold with appropriate coring either forms or aligns any desired mounting inserts. Coring is also provided to properly form a packing area, gate passage, fluid passages, and flange mounting seals. Once the mounting inserts have been positioned in the mold cavity, the mold sections are secured together, and a filler material, preferably a thermoplastic resin, is injected into the cavity. Upon hardening of the filler material, the inserts are secured into position. Further, the entire body and liner are a single solid unit comprising the packing cavity, the gate slot for sealing flow areas, the flow passages, and the flange rings for sealing connection of the valve to other mating surfaces. In another embodiment, a valve liner is placed within the mold cavity before filler material is added. The valve liner, instead of the mold, defines the packing area, gate passage, fluid passages, and flange mounting seals.
    • 一种用于制造双向,耐腐蚀和耐磨的闸阀阀体的方法和装置。 在一个实施例中,包括凸缘密封件和衬套的闸阀阀体在单个模制操作中被制造。 具有适当取心的模具可形成或对准任何所需的安装嵌件。 还提供取芯以适当地形成包装区域,门通道,流体通道和法兰安装密封件。 一旦安装嵌件已经定位在模具腔中,则模具部分被固定在一起,并且将填充材料(优选热塑性树脂)注入空腔中。 在填充材料硬化时,插入件被固定就位。 此外,整个主体和衬套是单个固体单元,其包括填充腔,用于密封流动区域的浇口槽,流动通道和用于将阀密封到其它配合表面的凸缘环。 在另一个实施例中,在添加填充材料之前,将阀衬套放置在模腔内。 代替模具的阀衬套限定了包装区域,闸门通道,流体通道和法兰安装密封件。
    • 9. 发明授权
    • Method for sealing tubes
    • 密封管的方法
    • US5189789A
    • 1993-03-02
    • US788624
    • 1991-11-06
    • Charles E. Hall
    • Charles E. Hall
    • B23P11/02F28F11/02
    • F28F11/02B23P11/025C08L2201/12F28F2255/04Y10T29/49352Y10T29/49732
    • A method for sealing the internal peripheral surface of a tube, such as a heat exchanger tube. A plug is provided which includes a plug body and at least one annular wing formed on an outer periphery of the plug body. The plug is chilled to a temperature below a transition temperature of the plug, then the annular wing or wings are bent backward such that the outer diameter is decreased to a diameter which is less than an inner diameter of the tube to be sealed. The chilled plug is then inserted into an open end of the tube, until a back portion of the plug is flush with the open end of the tube. As the ambient temperature heats the plugs, the plug returns to an undeformed state such that the annular wings return to a state of increased diameter, thereby sealing the tube. In order to ensure that the plug returns to this undeformed state, the plug is formed of a material having at least two allotropic states.
    • 一种用于密封管的内周表面的方法,例如热交换器管。 提供一种塞子,其包括塞体和形成在塞体外周上的至少一个环形翼片。 塞子被冷却到低于插头的转变温度的温度,然后环形翼或翼向后弯曲,使得外径减小到小于待密封管的内径的直径。 然后将冷冻塞插入管的开口端,直到塞的后部与管的开口端齐平。 当环境温度加热插头时,插头返回到未变形状态,使得环形翼回到直径增大的状态,从而密封管。 为了确保插头返回到该未变形状态,插头由具有至少两个同素异形态的材料形成。