Footstool and a method for making

    公开(公告)号:US10034549B1

    公开(公告)日:2018-07-31

    申请号:US15676242

    申请日:2017-08-14

    CPC classification number: A47C16/02 A47C5/125 B29C69/00

    Abstract: A footstool comprising a solid expanded polystyrene foam inner core with a plurality of foam side panels secured to the inner core. The footstool also comprises a foam top member secured to a top surface of the inner core and a cover material arranged over the plurality of side panels and the top member. The footstool further comprises a first base member in contact with the bottom surface of the inner core and a second base member in contact with the first base member and in contact with the cover material. The footstool is lightweight, easy to manufacture and low in cost.

    MANUFACTURING METHOD OF FLUID CONTROL DEVICE
    10.
    发明申请

    公开(公告)号:US20180065368A1

    公开(公告)日:2018-03-08

    申请号:US15641022

    申请日:2017-07-03

    Inventor: Yung-Lung Han

    Abstract: A manufacturing method of a fluid control device is provided. Firstly, a housing, a piezoelectric actuator and a deformable substrate are provided. The piezoelectric actuator includes a piezoelectric element and a vibration plate. The deformable substrate includes a flexible plate and a communication plate. A bulge is formed on the vibration plate. The flexible plate includes a movable part. Next, the flexible plate and the communication plate are stacked and coupled, and a preformed synchronous deformation process is implemented by applying at least one external force to outer portion of the deformable substrate to form a preformed synchronously-deformed structure. Then, the housing, the piezoelectric actuator and the deformable substrate are sequentially stacked and coupled. The preformed synchronously-deformed structure is aligned with the bulge of the vibration plate. Consequently, a specified depth is defined between the movable part of the flexible plate and the bulge of the vibration plate.

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