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    • 9. 发明授权
    • Injection molding filter assembly
    • 注塑过滤器总成
    • US4280908A
    • 1981-07-28
    • US162809
    • 1980-06-24
    • John LordJobst U. Gellert
    • John LordJobst U. Gellert
    • B29C45/00B01D29/44B29B7/00B29C37/00B29C45/20B29C45/24B29C45/26B29C45/62B29C47/00B29C47/68B01D35/02
    • B29C45/24B01D29/44
    • This invention relates to an improved injection molding filter assembly to be located between the molding machine and the mold. The assembly has an elongated inner torpedo member with a generally cylindrical outer surface which is centrally located in a passage through a hollow outer member. The passage is defined by a generally cylindrical inner wall which is interrupted by an even number of inwardly opening longitudinally extending channels. Inlet channels extending from the inlet of the assembly and dead ending adjacent the outlet alternate with outlet channels extending from the outlet of the assembly and dead ending adjacent the inlet. Filtering apertures are formed between the outer surface of the torpedo member and the lands between the inlet and outlet channels through which the melt flows from the inlet channels to the outlet channels. A single elongated aperture may be formed at each land or a plurality of smaller apertures may be formed by providing alternating laterally extending ridges and grooves on the inner surfaces of the lands and/or on the outer surface of the torpedo member. Contaminants which are too large to pass through the filtering apertures accumulate adjacent the dead ends of the inlet channels. The outer member has a collar portion which may be detached to take out the torpedo member for periodic removal of accumulated contaminants. The location of the channels in the outer member provides improved heat flow characteristics and allows the width of the filtering slits to be quickly and easily changed by substituting a relatively inexpensive torpedo member having a different diameter.
    • 本发明涉及一种位于成型机和模具之间的改进的注塑过滤器组件。 组件具有细长的内部鱼雷构件,其具有大致圆柱形的外表面,其中心位于穿过中空外部构件的通道中。 该通道由通常为圆柱形的内壁限定,其被偶数数量的向内开口的纵向延伸的通道中断。 从组件的入口延伸出来的入口通道和与出口相邻的死点与从组件的出口延伸出来的出口通道相邻,并且与入口相邻的死点。 在鱼雷构件的外表面和入口通道和出口通道之间形成过滤孔,熔体通过入口通道流到出口通道。 单个细长孔可以形成在每个陆地处,或者可以通过在鱼雷的内表面上和/或在鱼雷构件的外表面上提供交替的横向延伸的脊和凹槽来形成多个较小的孔。 太大而不能通过过滤孔的污染物在入口通道的死端附近聚集。 外部构件具有套环部分,其可以被拆卸以取出鱼雷构件以周期性地去除积聚的污染物。 通道在外部构件中的位置提供了改进的热流特性,并且通过替代具有不同直径的相对便宜的鱼雷构件,可以快速容易地改变过滤狭缝的宽度。
    • 10. 发明授权
    • Electrical hum eliminator
    • US10607587B1
    • 2020-03-31
    • US16014405
    • 2018-06-21
    • John Lord
    • John Lord
    • G10H3/18G10H1/32G10D1/08
    • A noise eliminator to eliminate electrical hum from an amplified musical instrument is provided. An aspect provides a method of playing an electrically amplified musical instrument having a sound pickup system that is electrically grounded, including, but not limited to, the steps of: disposing a first connector to the skin of a player of the amplified musical instrument, wherein the connector has least two oppositely disposed sides, and wherein the first disposed side removably adheres to the skin of the player and the second disposed side permits an electrical connection to be made with the player's skin; disposing a second connector that is electrically connected to the electrical ground of the sound pickup system; and establishing an electrical connection between the first connector and the second connector. Other aspects are described and claimed.