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    Self-tapping fastener
    3.
    发明授权
    Self-tapping fastener 有权

    公开(公告)号：US11879487B1

    公开(公告)日：2024-01-23

    申请号：US17114736

    申请日：2020-12-08

    申请人： Ryan Mansour

    发明人： Ryan Mansour

    IPC分类号： F16B25/10 ,  F16B25/00

    CPC分类号： F16B25/103 ,  F16B25/0084

    摘要： A self-tapping fastener or screw is provided including a head, a cutting tip, and a body portion. The cutting tip includes a first cutting surface. The body portion extends from the head along a central axis to the cutting tip. The body portion includes a proximal threaded portion having a proximal thread size; a distal threaded portion having a distal thread size, the distal thread size being smaller than the proximal thread size; and an intermediate portion, the intermediate portion of the body portion disposed between the proximal threaded portion and the distal threaded portion.

    Screw With Cutting Teeth
    6.
    发明申请
    Screw With Cutting Teeth 审中-公开

    公开(公告)号：US20180266467A1

    公开(公告)日：2018-09-20

    申请号：US15693760

    申请日：2017-09-01

    申请人： Fushang Co., Ltd.

    发明人： Jung-Nan Lin

    IPC分类号： F16B25/10 ,  F16B25/00

    CPC分类号： F16B25/103 ,  F16B25/0015 ,  F16B25/0026 ,  F16B25/0084

    摘要： A screw includes a shank and at least one thread. The shank includes a front section, a rear section spaced from the front section along a longitudinal axis of the shank, and an intermediate section between the front and rear sections. A head is formed at an upper end of the rear section. The intermediate section has circular cross sections, and the front section has roughly triangular cross sections. A plurality of separate raised teeth is provided on a circumference of the front section, and each of the plurality of raised teeth extends along the longitudinal axis of the shank. The thread is spirally formed on the shank and includes a plurality of thread convolutions. The screw can be quickly driven into workpieces to be combined without less combination between the screw and the workpieces.

    SCREW
    7.
    发明申请
    SCREW 审中-公开

    公开(公告)号：US20180209465A1

    公开(公告)日：2018-07-26

    申请号：US15463654

    申请日：2017-03-20

    申请人： KWANTEX RESEARCH INC.

    发明人： Chao-Wei LIN

    IPC分类号： F16B25/00

    CPC分类号： F16B25/0026 ,  F16B25/0052 ,  F16B25/0068 ,  F16B25/0084

    摘要： A screw includes a head and a shank extending from the head to terminate at a frusto-conical tip portion. A first thread section has asymmetric upper and lower thread surfaces, a plurality of V-shaped notches formed at a juncture of the surfaces, and a fillet surface formed at a juncture between the shank and the upper thread surface. Two second thread sections are disposed adjacent to each other and spaced apart from the first thread section. A third thread section extends from the first thread section toward the tip portion and has an outer surface of an arc-shaped cross-section. The screw-in movement of the screw is guided by the third thread section to prevent the screw from being slanted relative to a concrete object.