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公开(公告)号：US11926021B2
公开(公告)日：2024-03-12
申请号：US16800862
申请日：2020-02-25
申请人： Ttapdrive AS
CPC分类号： B25B23/105 , B25B15/004 , F16B23/003 , B25B23/0035
摘要： A drive system including a bit with a bit end configured to provide targeted frictional engagement with a fastener. The bit end has an outer leading wall tapered with respect to the bit end longitudinal axis at a leading wall angle selected from leading wall angle values ranging within a leading wall angle tolerance band and the fastener has an inner recess wall tapered with respect to the fastener longitudinal axis at a recess wall angle selected from recess wall angle values ranging within a recess wall angle tolerance band, wherein the leading wall angle values within the leading wall angle tolerance band and the recess wall angles values within the recess wall angle tolerance band do not overlap when the outer leading wall contacts the inner pilot recess wall at a targeted focal area to achieve a desired level of frictional engagement between the pilot end and the fastener.
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公开(公告)号：US20200269398A1
公开(公告)日：2020-08-27
申请号：US16800862
申请日：2020-02-25
申请人： Ttapdrive AS
摘要： A drive system including a bit with a bit end configured to provide targeted frictional engagement with a fastener. The bit end has an outer leading wall tapered with respect to the bit end longitudinal axis at a leading wall angle selected from leading wall angle values ranging within a leading wall angle tolerance band and the fastener has an inner recess wall tapered with respect to the fastener longitudinal axis at a recess wall angle selected from recess wall angle values ranging within a recess wall angle tolerance band, wherein the leading wall angle values within the leading wall angle tolerance band and the recess wall angles values within the recess wall angle tolerance band do not overlap when the outer leading wall contacts the inner pilot recess wall at a targeted focal area to achieve a desired level of frictional engagement between the pilot end and the fastener.
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公开(公告)号：US10731692B2
公开(公告)日：2020-08-04
申请号：US13745877
申请日：2013-01-21
申请人： Ttapdrive AS
发明人： David C. Goss
摘要： The invention provides a screw in which the screw head (1) has a slot (2) in the upper surface of the screw head, an upper peripheral wall (9) of regular planform extending down from the rim of the slot into the screwhead, the upper peripheral wall (9) being generally aligned with the axis of the screw to form a recess (3), a sloping transition surface (15), extending downwardly and inwardly with respect to the lower edge of the upper peripheral wall (9), and a further recess (11) extending downwardly from the lower edge of the sloping transition surface (15), in which the dimensions of the screw head are such that when the screwhead is engaged by a tool (6) having upper (16) and lower (17) engagement sections, and in which the upper engagement section (16) extends downwardly with respect to the axis of the screw to which the tool is to engage and the lower engagement section (17) extends further downwardly, and in which there is at least one protrusion (or rib) (21) on the inside wall (12) of the further recess (11), so that there is a ‘stick fit’ between the protrusion (21) on the inside wall (12) of the further recess (11) and the lower engagement section (17) of the tool (6).
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公开(公告)号：US20140060268A1
公开(公告)日：2014-03-06
申请号：US13745877
申请日：2013-01-21
申请人： TTAPDRIVE AS
发明人： David C. Goss
摘要： The invention provides a screw in which the screw head (1) has a slot (2) in the upper surface of the screw head, an upper peripheral wall (9) of regular planform extending down from the rim of the slot into the screwhead, the upper peripheral wall (9) being generally aligned with the axis of the screw to form a recess (3), a sloping transition surface (15), extending downwardly and inwardly with respect to the lower edge of the upper peripheral wall (9), and a further recess (11) extending downwardly from the lower edge of the sloping transition surface (15), in which the dimensions of the screw head are such that when the screwhead is engaged by a tool (6) having upper (16) and lower (17) engagement sections, and in which the upper engagement section (16) extends downwardly with respect to the axis of the screw to which the tool is to engage and the lower engagement section (17) extends further downwardly, and in which there is at least one protrusion (or rib) (21) on the inside wall (12) of the further recess (11), so that there is a ‘stick fit’ between the protrusion (21) on the inside wall (12) of the further recess (11) and the lower engagement section (17) of the tool (6).
摘要翻译： 本发明提供了一种螺钉，其中螺钉头（1）在螺钉头的上表面中具有槽（2），从槽的边缘向下延伸到螺钉头中的规则平面的上周壁（9） 所述上周壁（9）与所述螺钉的轴线大致对准以形成相对于所述上周壁（9）的下边缘向下和向内延伸的倾斜过渡表面（15） ，以及从所述倾斜过渡表面（15）的下边缘向下延伸的另一个凹部（11），其中所述螺钉头的尺寸使得当所述螺钉头与具有上部（16）的工具（6）接合时， 和下部（17）接合部分，并且其中上部接合部分（16）相对于工具将要接合的螺钉的轴线向下延伸，并且下部接合部分（17）进一步向下延伸，并且其中 在内壁上有至少一个突起（或肋）（21） （11）的内侧壁（12）上的突出部（21）与下侧接合部（17）之间存在“贴合” 工具（6）。
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