公开(公告)号：US20050047891A1

公开(公告)日：2005-03-03

申请号：US10856165

申请日：2004-05-28

申请人： Toshimasa Toyooka ,  Shinichi Hamano

发明人： Toshimasa Toyooka ,  Shinichi Hamano

IPC分类号： B25B15/00 ,  F16B23/00

CPC分类号： F16B23/0023

摘要： The present invention provides a screw, comprising a screw head having a drive recess and a screw shank having threads and being integrally formed with the screw head, wherein the drive recess includes a plurality of engaging grooves equiangularly radiating from an axis of the screw in plan view, a bottom face of each engaging groove having a steep slope, which is near to the screw shank, and a gentle slope, which is far from the screw shank, for enlarging the engaging area of the engaging grooves.

摘要翻译： 本发明提供了一种螺钉，其包括具有驱动凹部的螺钉头和具有螺纹并与螺钉头一体形成的螺杆，其中，驱动凹部包括从螺杆的轴线等角度地平行于计划中的辐条 可以看到，接近螺钉柄的陡坡的每个接合槽的底面以及远离螺杆的平缓斜面用于扩大接合槽的接合面积。

公开(公告)号：US07077038B2

公开(公告)日：2006-07-18

申请号：US10856165

申请日：2004-05-28

申请人： Toshimasa Toyooka ,  Shinichi Hamano

发明人： Toshimasa Toyooka ,  Shinichi Hamano

IPC分类号： B25B23/00

CPC分类号： F16B23/0023

摘要： The present invention provides a screw, comprising a screw head having a drive recess and a screw shank having threads and being integrally formed with the screw head, wherein the drive recess includes a plurality of engaging grooves equiangularly radiating from an axis of the screw in plan view, a bottom face of each engaging groove having a steep slope, which is near to the screw shank, and a gentle slope, which is far from the screw shank, for enlarging the engaging area of the engaging grooves.

摘要翻译： 本发明提供了一种螺钉，其包括具有驱动凹部的螺钉头和具有螺纹并与螺钉头一体形成的螺杆，其中，驱动凹部包括从螺杆的轴线等角度地平行于计划中的辐条 可以看到，接近螺钉柄的陡坡的每个接合槽的底面以及远离螺杆的平缓斜面用于扩大接合槽的接合面积。

公开(公告)号：US06572316B2

公开(公告)日：2003-06-03

申请号：US09795945

申请日：2001-02-26

申请人： Toshimasa Toyooka

发明人： Toshimasa Toyooka

IPC分类号： F16B2300

CPC分类号： F16B35/06 ,  Y10S411/919

摘要： A screw with a thin head comprising a screw head (2) and a shank (4), and with its top (5) forming a circular arc of a large radius has an unthreaded part (20) tapered down between the bearing surface (6) and the thread (3) and has a radius (21) connected to the thread portion (3), and therefore it will be readily produced to be used for compact products and correspond with thin products. And the radius (21) is connected to the unthreaded part (20) of the shank on one hand and to the screw ridge (3) on the other, preventing stress concentration at this part from occurring at time of fastening and a long time after the fastening of the screw, so ensuring a fastening strength, without causing a fatigue fracture. And further, when heating and plating treatments have been given to the screw, as the top of the screw head is not flat, there is no possibility of the heads of the screws being stacked to each other in the course of mass production, ensuring stable heat and plating treatments.