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    • 1. 发明授权
    • Apparatus for dispensing comestibles having a reversible piston rod
assembly
    • 用于分配具有可逆活塞杆组件的食物的装置
    • US5052593A
    • 1991-10-01
    • US457319
    • 1989-12-28
    • Donald C. GromePaul P. KoladaRainer B. Teufel
    • Donald C. GromePaul P. KoladaRainer B. Teufel
    • A21C11/18
    • A21C11/18
    • A battery-operated apparatus for dispensing comestibles has a housing to which a comestibles-receiving barrel is removably connected. A removable piston is nonrotatably slidable within the barrel and pushed through the barrel by a piston rod nonrotatably connected to the piston and slidably received within the housing. The piston rod has external screw threads over a substantial portion of its length which are engaged by internal threads of an encircling drive nut. A drive member rotatably mounted in the housing and having a through-bore for slidably receiving the piston rod is provided for rotating the drive nut. The piston rod and the drive nut constitute a reversible assembly so that, following use, the barrel and the piston may be removed from the housing for cleaning and the piston rod with the drive nut thereon may be removed from the housing, turned upside-down, and reinserted into the housing ready for another use. Portions of the piston rod are unthreaded to prevent overtravel, and resilient stop members on the piston rod push the drive nut onto the threaded portion of the piston rod at each end of its travel to assure a threaded connection when the piston rod is reversed.
    • 用于分配食物的电池供电设备具有壳体,可食物接收筒可移除地连接到该壳体。 可拆卸活塞不可旋转地在筒体内滑动并且通过不可旋转地连接到活塞并可滑动地容纳在壳体内的活塞杆推过筒体。 活塞杆在其长度的大部分上具有外螺纹,该螺纹螺纹由环绕的驱动螺母的内螺纹接合。 提供可旋转地安装在壳体中并具有用于可滑动地容纳活塞杆的通孔的驱动构件,用于旋转驱动螺母。 活塞杆和驱动螺母构成可逆组件,使得在使用之后,筒体和活塞可以从壳体移除以进行清洁,并且其上具有驱动螺母的活塞杆可以从壳体上拆下 ,并重新插入房屋,准备再次使用。 活塞杆的部分无螺纹以防止超程,并且活塞杆上的弹性止动构件在其行程的每一端将驱动螺母推动到活塞杆的螺纹部分上,以在活塞杆反向时确保螺纹连接。