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    Filter device and filtration apparatus
    2.
    发明授权
    Filter device and filtration apparatus 有权

    公开(公告)号：US11465078B2

    公开(公告)日：2022-10-11

    申请号：US16557717

    申请日：2019-08-30

    Applicant: YAMASHIN-FILTER CORP.

    Inventor： Makoto Ishizuka

    IPC: B01D29/88 ,  B01D29/15

    Abstract: A rod having a substantially-cylindrical shape with both ends being covered is provided to a lid body, which covers an upper end surface of a case having a bottomed substantially-cylindrical shape, the rod protruding in the case. A first hole is formed in a portion of a side surface of the rod, which is exposed to the inside of the case. Further, an air vent pit (passage) is formed in the lid body, and a second hole is formed in a portion of the side surface of the rod, which is exposed to the inside of the air vent pit. A moving member moves along the rod from a first position at which the moving member does not cover the first hole and a second position at which the moving member covers the first hole.

    Tank device
    3.
    发明授权
    Tank device 有权

    公开(公告)号：US11511934B2

    公开(公告)日：2022-11-29

    申请号：US16594865

    申请日：2019-10-07

    Applicant: YAMASHIN-FILTER CORP.

    Inventor： Makoto Ishizuka ,  Nobuyuki Kitajima

    IPC: B01D35/02 ,  B65D88/12 ,  B01D35/027 ,  B60K15/077

    Abstract: Inside a tank body storing a liquid, a return filter is provided protruding downward from an upper surface of the tank body, and a substantially plate-like (plate-shaped) float is also provided that is inserted into the tank body and floats in accordance with change in a liquid surface of the liquid stored in the tank body. The float is provided with an opening larger than a diameter of a filter case, and in a plan view, the float is disposed between the tank body and the filter case.

    Filter device
    4.
    发明授权
    Filter device 有权

    公开(公告)号：US10702810B2

    公开(公告)日：2020-07-07

    申请号：US16388390

    申请日：2019-04-18

    Applicant: YAMASHIN-FILTER CORP.

    Inventor： Makoto Ishizuka

    IPC: B01D35/027 ,  B01D29/11 ,  B01D29/00 ,  B01D24/10 ,  B01D29/21 ,  B01D24/00 ,  B01D29/07

    Abstract: When air inside a filter device is purged, filtered liquid can be discharged together with air to the outside of the filter device. A casing is provided inside a tank, a filter element is provided inside the casing, and a lid is provided so as to cover the upper face of the casing and the upper face of the tank. A first through-hole is formed in the substantially center of an upper plate that covers the upper end face of a filtration member of a filter element and is abutted with the lower face of the lid; in a plan view, a second through-hole, in which a first opening being one end is disposed at a position overlapped with the first through-hole, and a second opening being the other end is disposed between the side face of the tank and the side face of the casing, is formed in the lid; and the first through-hole and the second through-hole communicate with the hollow portion of the filtration member and space that is inside the tank and outside the casing.

    Filter device
    5.
    发明授权
    Filter device 有权

    公开(公告)号：US10525386B2

    公开(公告)日：2020-01-07

    申请号：US15953539

    申请日：2018-04-16

    Applicant: YAMASHIN-FILTER CORP.

    Inventor： Tatsuhiro Oshita ,  Meiho Taku ,  Makoto Ishizuka

    IPC: B01D35/147 ,  B01D29/07 ,  B01D29/11 ,  B01D29/58 ,  B01D36/00 ,  F15B1/26 ,  F15B21/041

    Abstract: When a lid covers an opening portion formed at an upper end of a filter case with a bottomed substantially cylindrical shape inside which a filter element is disposed, the internal space between the lid and the filter case is formed. A bypass flow path connecting the internal space and outside space is formed in the lid, and a relief valve disposed moveably between a position closing the bypass flow path and a position opening the bypass flow path includes an air bleeder formed from a porous material.

    Filter apparatus
    6.
    发明授权
    Filter apparatus 有权

    公开(公告)号：US10441899B2

    公开(公告)日：2019-10-15

    申请号：US15598553

    申请日：2017-05-18

    Applicant: YAMASHIN-FILTER CORP.

    Inventor： Mitsunobu Okamoto ,  Makoto Ishizuka

    IPC: B01D19/00 ,  B01D35/027 ,  B01D29/11 ,  B01D29/90 ,  B01D29/92

    Abstract: A liquid is made to flow into a filter case from a tangential direction at any point on a side surface of the filter case and produces a swirling flow. Bubbles collected in a center of the swirling flow are retained by a retainer plate, thereby removing the bubbles from the liquid. A filter element filters the liquid from which the bubbles were removed.

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