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    VENTILATED THREE DIMENSIONAL STRUCTURE FROM ADDITIVE MANUFACTURE FOR EASY POWDER REMOVAL DURING POST PROCESS
    1.
    发明申请
    VENTILATED THREE DIMENSIONAL STRUCTURE FROM ADDITIVE MANUFACTURE FOR EASY POWDER REMOVAL DURING POST PROCESS 有权

    公开(公告)号：US20220010927A1

    公开(公告)日：2022-01-13

    申请号：US16925330

    申请日：2020-07-09

    Applicant: National Taiwan University of Science and Technology

    Inventor： Saurav Verma ,  Jeng-Ywan Jeng ,  Ajeet Kumar

    IPC: F16S5/00 ,  B33Y80/00

    Abstract: The proposed lattice structure is designed to simplify the time of long and difficult post-printing process of removing the unused powder or resin by blowing air in the additive manufacturing parts. The designed lattice structure is a ventilated three dimensional structure that includes a plurality of lattice bodies arranged in a first direction, a second direction and a third direction. The first direction, the second direction and the third direction are orthogonal. Each of the lattice body has a hollow structure formed by a shell wall including a first venting hole opening in the first direction and facing the first venting hole of another adjacent lattice body, a second venting hole opening in the second direction and facing the second venting hole of another adjacent lattice body; and a third venting hole opening in the third direction and facing the third venting hole of another adjacent lattice body.

    BIO-MIMICKED THREE-DIMENSIONAL LAMINATED STRUCTURE
    2.
    发明申请
    BIO-MIMICKED THREE-DIMENSIONAL LAMINATED STRUCTURE 有权

    公开(公告)号：US20210186152A1

    公开(公告)日：2021-06-24

    申请号：US17083279

    申请日：2020-10-28

    Applicant: National Taiwan University of Science and Technology

    Inventor： Ajeet Kumar ,  Jeng-Ywan Jeng ,  Yun-Peng Yeh

    IPC: A43B13/18 ,  A43B13/02 ,  A43B13/04 ,  B33Y80/00 ,  A43B13/20

    Abstract: A invention disclosed a bio-mimicked three-dimensional laminated structure at least comprising a flexible lattice structure, which is characterized in that the flexible lattice structure comprises a plurality of particle units are uniformly disposed and evenly distributed in the X-axis, the Y-axis, and the Z-axis direction and evenly distributed as a lattice matrix of an array grid in an identical plane; wherein each of the particle units is an opened hollow shell or a close shell. The design eliminates the need for support structures and the subsequent post-processing required to remove them. A shell-shaped close cell bio-mimicked three-dimensional laminated structure bio-mimicking a sea urchin shape was introduced for the load-bearing structure application.

    COMPOSITE ADDITIVE STRUCTURE AND COMPOSITE ADDITIVE MANUFACTURING EQUIPMENT
    3.
    发明申请
    COMPOSITE ADDITIVE STRUCTURE AND COMPOSITE ADDITIVE MANUFACTURING EQUIPMENT 有权

    公开(公告)号：US20230117377A1

    公开(公告)日：2023-04-20

    申请号：US17505608

    申请日：2021-10-19

    Applicant: National Taiwan University of Science and Technology

    Inventor： Jeng-Ywan Jeng ,  Mayur Jiyalal Prajapati ,  Ajeet Kumar

    IPC: B29C64/245 ,  B29C64/209 ,  B29C64/336 ,  B29C64/295 ,  B33Y30/00 ,  B33Y70/10

    Abstract: A composite additive structure comprising a three-dimensional base structure and a filled structure is provided. The three-dimensional base structure comprises a shell and a cavity enclosed by the shell. The filled structure is filled in the cavity and connected to the shell to form a solid composite structure. A composite additive manufacturing equipment includes a forming stage, a first material supply module and a second material supply module. The forming stage includes a forming member. The first material supply module provides a first material stacked on the forming member layer by layer to form the three-dimensional base structure. The second material supply module provides a second material filled in the cavity of the three-dimensional base structure to obtain the composite additive structure. The second material can be filled in the three-dimensional base structure using three filling strategies: local filling, layer filling and global filling.

    Ventilated three dimensional structure from additive manufacture for easy powder removal during post process
    4.
    发明授权
    Ventilated three dimensional structure from additive manufacture for easy powder removal during post process 有权

    公开(公告)号：US11339922B2

    公开(公告)日：2022-05-24

    申请号：US16925330

    申请日：2020-07-09

    Applicant: National Taiwan University of Science and Technology

    Inventor： Saurav Verma ,  Jeng-Ywan Jeng ,  Ajeet Kumar

    IPC: F16S5/00 ,  B33Y80/00 ,  B22F5/00

    Abstract: The proposed lattice structure is designed to simplify the time of long and difficult post-printing process of removing the unused powder or resin by blowing air in the additive manufacturing parts. The designed lattice structure is a ventilated three dimensional structure that includes a plurality of lattice bodies arranged in a first direction, a second direction and a third direction. The first direction, the second direction and the third direction are orthogonal. Each of the lattice body has a hollow structure formed by a shell wall including a first venting hole opening in the first direction and facing the first venting hole of another adjacent lattice body, a second venting hole opening in the second direction and facing the second venting hole of another adjacent lattice body; and a third venting hole opening in the third direction and facing the third venting hole of another adjacent lattice body.

    CRYSTAL STRUCTURES INSPIRED TESSELLATIONS TO GENERATE MULTI-MATERIAL PROPERTIES IN LATTICE STRUCTURES WITH 3D PRINTING
    7.
    发明公开
    CRYSTAL STRUCTURES INSPIRED TESSELLATIONS TO GENERATE MULTI-MATERIAL PROPERTIES IN LATTICE STRUCTURES WITH 3D PRINTING 审中-公开

    公开(公告)号：US20230264450A1

    公开(公告)日：2023-08-24

    申请号：US17676023

    申请日：2022-02-18

    Applicant: National Taiwan University of Science and Technology

    Inventor： Chinmai Bhat ,  Ajeet Kumar ,  Jeng-Ywan Jeng

    IPC: A42B3/12 ,  A43B13/18 ,  B62J1/26

    CPC classification number: A42B3/125 ,  A43B13/181 ,  B62J1/26 ,  B33Y80/00

    Abstract: The metallic crystal structures inspired edge-to-edge tessellations and a tessellation based lattice structures are disclosed. In accordance with an exemplary embodiment of the invention, basic unit lattice cells are stacked and connected to constitute a three-dimensional tessellations, wherein each of the basic unit lattice cells comprises a multiple flat connecting portions formed on a surface of the basic unit lattice cell and intersecting with a multiple of axes intersecting in a center of the basic unit lattice cell, and the flat connecting portions of one of the basic unit lattice cell is connected to the flat connecting portions of the adjacent basic unit lattice cell to constitute a connection structure of edge-to-edge tessellation. The formed tessellations are periodically tessellated in a design domain to form different tessellated lattice structures. The Functionally Tessellated (FT) lattice structures composed of different tessellations by interlocking into each other are also disclosed.

    SMART TOOTH CLEANING DEVICE
    8.
    发明公开
    SMART TOOTH CLEANING DEVICE 审中-公开

    公开(公告)号：US20230181300A1

    公开(公告)日：2023-06-15

    申请号：US17742391

    申请日：2022-05-11

    Applicant: National Taiwan University of Science and Technology

    Inventor： Jeng-Ywan Jeng ,  Zheng-Ye She ,  Cheng-Yi Tsai ,  Azam Hamza ,  Ajeet Kumar

    IPC: A61C17/22 ,  A46B15/00

    CPC classification number: A61C17/221 ,  A46B15/0036 ,  A46B15/0038 ,  A46B2200/1066

    Abstract: The present invention provides a smart tooth cleaning device comprises a hand piece having a bearing surface, a tooth cleaning piece, a driving module connected to the tooth cleaning piece for driving the tooth cleaning piece to move, a first camera module comprising a first optical lens and a first image capturing element, and a first light source module comprising a plurality of light-emitting elements. The tooth cleaning piece has a tooth cleaning body, a brush head, and a plurality of bristles. The first camera module is disposed on the bearing surface and is electrically connected to the control module. The first image capturing element receives light along an optical axis of the first optical lens. A first angle θ1 between the optical axis and a first direction, is in a range of 5°to 30°. The first light source module is disposed on the bearing surface.

    Bio-mimicked three-dimensional laminated structure
    9.
    发明授权
    Bio-mimicked three-dimensional laminated structure 有权

    公开(公告)号：US11457694B2

    公开(公告)日：2022-10-04

    申请号：US17083279

    申请日：2020-10-28

    Applicant: National Taiwan University of Science and Technology

    Inventor： Ajeet Kumar ,  Jeng-Ywan Jeng ,  Yun-Peng Yeh

    IPC: B32B3/12 ,  A43B13/18 ,  A43B13/02 ,  A43B13/04 ,  A43B13/20 ,  B33Y80/00 ,  F16F7/12 ,  B33Y10/00

    Abstract: A invention disclosed a bio-mimicked three-dimensional laminated structure at least comprising a flexible lattice structure, which is characterized in that the flexible lattice structure comprises a plurality of particle units are uniformly disposed and evenly distributed in the X-axis, the Y-axis, and the Z-axis direction and evenly distributed as a lattice matrix of an array grid in an identical plane; wherein each of the particle units is an opened hollow shell or a close shell. The design eliminates the need for support structures and the subsequent post-processing required to remove them. A shell-shaped close cell bio-mimicked three-dimensional laminated structure bio-mimicking a sea urchin shape was introduced for the load-bearing structure application.

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