ARTIFICIAL HEART VALVES INCORPORATING NEGATIVE POISSON'S RATIO MATERIALS

    公开(公告)号:US20240238092A1

    公开(公告)日:2024-07-18

    申请号:US18585221

    申请日:2024-02-23

    申请人: Joon Bu Park

    发明人: Joon Bu Park

    IPC分类号: A61F2/24

    CPC分类号: A61F2/2454 A61F2/2415

    摘要: An artificial heart valve includes a frame, one or more struts attached to the frame, and a leaflet configured to open and close a fluid flow path through the frame by moving in response to heartbeats. Movement of the leaflet is restricted by the one or more struts. The leaflet includes an inner leaflet body having a negative Poisson's ratio, and an outer leaflet body at least partially surrounding the inner leaflet body, the outer leaflet body having a positive Poisson's ratio.

    ARTIFICIAL HEART VALVES INCORPORATING NEGATIVE POISSON`S RATIO MATERIALS

    公开(公告)号:US20230126111A1

    公开(公告)日:2023-04-27

    申请号:US17512340

    申请日:2021-10-27

    申请人: Joon Bu Park

    发明人: Joon Bu Park

    IPC分类号: A61F2/24

    摘要: An artificial heart valve includes a frame, one or more struts attached to the frame, and a leaflet configured to open and close a fluid flow path through the frame by moving in response to heartbeats. Movement of the leaflet is restricted by the one or more struts. The leaflet includes an inner leaflet body having a negative Poisson's ratio, and an outer leaflet body at least partially surrounding the inner leaflet body, the outer leaflet body having a positive Poisson's ratio.

    NEGATIVE POISSON`S RATIO MATERIALS FOR EAR PLUGS AND MOUTH GUARDS

    公开(公告)号:US20220378619A1

    公开(公告)日:2022-12-01

    申请号:US17331135

    申请日:2021-05-26

    申请人: Joon Bu Park

    发明人: Joon Bu Park

    摘要: An ear plug includes an elongated body sized and shaped to be partially inserted into an ear canal of a wearer, in which the body includes a negative Poisson's ratio (NPR) polymer foam material having a Poisson's ratio of between 0 and −1. A mouth guard includes an arc-shaped element sized to be received into a mouth of a wearer. The arc-shaped element has an outer wall, an inner wall, and a biting wall connecting the outer wall and the inner wall. The outer wall, the inner wall, and the biting wall define a channel that is sized to receive upper teeth of the wearer or lower teeth of the wearer. The outer wall, the biting wall, or both includes a negative Poisson's ratio (NPR) material having a Poisson's ratio between 0 and −1.

    NEGATIVE POISSON`S RATIO MATERIALS FOR DOORS AND WINDOWS

    公开(公告)号:US20240133231A1

    公开(公告)日:2024-04-25

    申请号:US17971053

    申请日:2022-10-20

    申请人: Joon Bu Park

    发明人: Joon Bu Park

    摘要: A door includes a rectangular panel having a first face, a second face, and two pairs of opposing edges, in which the edges of each pair of edges are parallel and in which a first pair of edges is longer than a second pair of edges. The rectangular panel includes a layered composite material, in which a first layer of the composite material has a positive Poisson's ratio (PPR) and a second layer of the composite material is disposed in contact with the first layer and that includes a material having a negative Poisson's ratio (NPR). The door includes a hinge including plates joined together by a joint, in which a first one of the plates is attached to a first one of the edges of the first pair of edges and in which a second one of the plates extends beyond the first one of the edges. The door also includes a handle opening defined through a thickness of the rectangular panel.