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公开(公告)号：US10309437B2
公开(公告)日：2019-06-04
申请号：US15463654
申请日：2017-03-20
发明人： Chao-Wei Lin
IPC分类号： F16B25/00
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.
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公开(公告)号：US20180135681A1
公开(公告)日：2018-05-17
申请号：US15466370
申请日：2017-03-22
发明人： Chao-Wei LIN
CPC分类号： F16B25/0036 , B21H3/022 , B21H3/06 , F16B25/00 , F16B25/0015 , F16B25/0078
摘要： A crack-proof screw includes a thread formed around a shank. A helical notch continuously and helically extends along the shank and is indented into the shank and the thread. The helical notch is proximal to but spaced apart from a tip of the shank. The notch is trapezoidal in cross section, and has a notch bottom, an open end opening at an outer peripheral surface of the shank oppositely of the notch bottom, and two opposite notch walls extending divergingly from the notch bottom to the open end. The open end is larger in width than the notch bottom. A method of making the screw is also disclosed.
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公开(公告)号：US12055174B2
公开(公告)日：2024-08-06
申请号：US17411649
申请日：2021-08-25
发明人： Chao-Wei Lin
IPC分类号： F16B25/00
CPC分类号： F16B25/0068 , F16B25/0015 , F16B25/0047
摘要： A wood screw includes a head, a shank axially extending from the head, a main thread extending helically around the shank in a tightening direction and having an outer diameter ranging from 3 to 16 mm, and a plurality of forward ribs extending spirally around the shank in a same direction as the main thread. The number of the forward ribs ranges from three to five. Each forward rib, in a cross section thereof, has a first outer edge facing the tightening direction, and a second outer edge facing opposite the tightening direction and having a length shorter than that of the first outer edge. Each forward rib has a height smaller than that of the main thread, and a lead angle greater than that of the main thread.
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公开(公告)号：US20230135213A1
公开(公告)日：2023-05-04
申请号：US17585051
申请日：2022-01-26
发明人： Chao-Wei LIN
摘要： A fastener includes a screw head and a screw shank. The screw head has a top surface and an inner surrounding surface. The inner surrounding surface has six curved portions and six driven portions disposed in an alternating arrangement. Each of the driven portions has a curved section connected to one of two adjacent curved portions and having a direction of curvature opposite to that of the one of the two adjacent curved portions, a straight section extending along a tangent line of an end of the curved section, and an extension section connected between the straight section and the other one of the two adjacent curved portions.
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公开(公告)号：US20180209465A1
公开(公告)日：2018-07-26
申请号：US15463654
申请日：2017-03-20
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.
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公开(公告)号：US20160265578A1
公开(公告)日：2016-09-15
申请号：US14927637
申请日：2015-10-30
发明人： CHAO-WEI LIN
IPC分类号： F16B35/06
CPC分类号： F16B35/065
摘要： A screw according to the present disclosure includes a head, a shank, a thread, a plurality of first ribs and at least one second rib. The thread is formed on the shank. The head is formed at one end of the shank and is configured to receive a fastening tool. The head is of tapered shape and has tapered side-surfaces, which include a first side surface and a second side surface. T he second side surface is located between the first side surface and the shank. The first ribs are positioned on the first side surface. The second rib is positioned on the second side surface.
摘要翻译： 根据本公开的螺钉包括头部，柄部，螺纹，多个第一肋和至少一个第二肋。 螺纹形成在柄上。 头部形成在柄的一端并构造成接收紧固工具。 头部呈锥形，具有锥形侧面，其包括第一侧面和第二侧面。 第二侧表面位于第一侧表面和柄之间。 第一肋条位于第一侧表面上。 第二肋条位于第二侧面上。
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公开(公告)号：US20220325740A1
公开(公告)日：2022-10-13
申请号：US17411649
申请日：2021-08-25
发明人： Chao-Wei LIN
IPC分类号： F16B25/00
摘要： A wood screw includes a head, a shank axially extending from the head, a main thread extending helically around the shank in a tightening direction and having an outer diameter ranging from 3 to 16 mm, and a plurality of forward ribs extending spirally around the shank in a same direction as the main thread. The number of the forward ribs ranges from three to five. Each forward rib, in a cross section thereof, has a first outer edge facing the tightening direction, and a second outer edge facing opposite the tightening direction and having a length shorter than that of the first outer edge. Each forward rib has a height smaller than that of the main thread, and a lead angle greater than that of the main thread.
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公开(公告)号：US10337548B2
公开(公告)日：2019-07-02
申请号：US15466370
申请日：2017-03-22
发明人： Chao-Wei Lin
摘要： A crack-proof screw includes a thread formed around a shank. A helical notch continuously and helically extends along the shank and is indented into the shank and the thread. The helical notch is proximal to but spaced apart from a tip of the shank. The notch is trapezoidal in cross section, and has a notch bottom, an open end opening at an outer peripheral surface of the shank oppositely of the notch bottom, and two opposite notch walls extending divergingly from the notch bottom to the open end. The open end is larger in width than the notch bottom. A method of making the screw is also disclosed.
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