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    • 21. 发明授权
    • Submersible electric motor and method of manufacturing the same
    • 潜水电动机及其制造方法
    • US4496866A
    • 1985-01-29
    • US339208
    • 1982-01-13
    • Sakuei YamamotoMitsuhiro NishidaNoboru TashiroNobuo Sonoda
    • Sakuei YamamotoMitsuhiro NishidaNoboru TashiroNobuo Sonoda
    • H02K5/128H02K5/12
    • H02K5/1285
    • The stator core having stator coils thereon of a submersible electric motor is provided with a cylindrical can disposed in engagement with the inner surface of the stator coil and molded resin member is formed completely about the external surface of the core, the end surfaces of the core and the end portions of the coils in engagement with the end portions of the can to completely encapsulate the core and coils. The end portions of the can may be bent outwardly and embedded directly in the molded resin member during the molding thereof with the can located within the core. Alternatively, a mold tool may be located within the core for molding the molded resin member about the stator core and coils and upon removal of the tool a hollow cylindrical can may be located within the core. The end portions of the can are then sealed to the end portions of the molded member. A terminal plate and fastener fittings may also be molded integrally into the molded member. End brackets may then be secured to opposite ends of the molded resin member. The brackets are provided with bosses which extend into the can and a seal is provided between the can and the boss. The can, in conjunction with the end brackets, define a central portion for receiving a lubricant for the bearings supporting a rotor within the can.
    • 具有潜水电动机的定子线圈的定子铁芯设置有与定子线圈的内表面配合的圆筒形罐,并且模制树脂构件完全围绕芯的外表面形成,芯的端表面 并且线圈的端部与罐的端部接合以完全地包封芯和线圈。 罐的端部可以向外弯曲并且在用位于芯内的罐的模制中直接嵌入在模制树脂构件中。 或者,模具可以位于芯内,用于将模制树脂构件围绕定子芯和线圈模制,并且在移除工具时,中空圆柱形罐可以位于芯内。 然后将罐的端部密封到模制构件的端部。 端子板和紧固件配件也可以一体地模制到模制构件中。 然后,端托架可以固定到模制树脂构件的相对端。 支架设置有延伸到罐中的凸台,并且在罐和凸台之间设置有密封件。 罐与结束支架一起限定一个中心部分,用于接收支撑罐内的转子的轴承的润滑剂。
    • 28. 发明授权
    • Scroll-type vacuum apparatus with rotating scrolls and discharge valve
    • 涡旋式真空装置,带有旋转涡旋和排气阀
    • US4846640A
    • 1989-07-11
    • US98961
    • 1987-09-21
    • Mitsuhiro NishidaIsamu EtouEtsuo Morishita
    • Mitsuhiro NishidaIsamu EtouEtsuo Morishita
    • F04C18/02F04C29/02
    • F04C29/023F04C18/023
    • A scroll type positive displacement apparatus which can be used as a vacuum pump is disclosed. A pair of interfitting scrolls are housed in a first container which communicates with a vacuum chamber to be evacuated by the pump. The scrolls are rotated in synchrony about parallel, nonaligned axes by a drive motor. The scrolls define a plurality of spiral compression chambers which change in size when the scrolls are rotated, compressing a gas contained in the compression chambers. The shaft of one of the scrolls has a discharge port formed therein which communicates between the centermost compression chamber and the inside of a second container which adjoins the first container. The second container is partially filled with lubricating oil and communicates with the atmosphere. The discharge port is equipped with a check valve which permits compressed gas to enter the second container from the scrolls but prevents gas from flowing in the opposite direction. The pump may be further equipped with one or more oil supply passageways formed in the shaft of the scroll in which the discharge port is formed. Lubricating oil is introduced via the oil supply passageway from the second container into one or more of the compression chambers of the pump.
    • 公开了可用作真空泵的涡旋式正位移装置。 一对相互配合的涡卷容纳在与真空室相通的第一容器中,该真空室被泵抽真空。 滚动体通过驱动马达同步旋转并联,不对齐的轴。 涡卷限定了多个螺旋压缩室,当涡旋件旋转时其尺寸变化,压缩包含在压缩室中的气体。 一个涡旋件的轴具有形成在其中的排出口,其连通中心压缩室与邻接第一容器的第二容器的内部。 第二容器部分地装有润滑油并与大气连通。 排放口配备有止回阀,其允许压缩气体从涡管进入第二容器,但是防止气体沿相反方向流动。 泵还可以配备有形成在其中形成有排出口的涡管的轴中的一个或多个供油通道。 润滑油通过供油通道从第二容器引入泵的一个或多个压缩室。