公开(公告)号：WO2011153619A3

公开(公告)日：2012-02-02

申请号：PCT/CA2011000666

申请日：2011-06-07

Applicant: GRK CANADA LTD ,  WALTHER MIRCO

Inventor： WALTHER MIRCO

IPC: F16B25/04 ,  F16B25/00 ,  F16B33/02

CPC classification number: F16B35/005 ,  F16B25/0015 ,  F16B25/0047

Abstract: A screw fastener (1) having a head (H), threaded shank (S) with compound, divided threads (T) and tip end (P) has an upper thread surface extending at a substantially flat angle from a normal to a longitudinal axis (3) of the screw which diverts upwardly to a first peripheral edge defining a cupped or concave upper thread surface and a lower thread surface extending upwardly to a second peripheral edge, with a radially inward recess between first and second edges. The screw exhibits significantly increased pull-out resistance.

Abstract translation: 具有头部（H），带有化合物的螺纹柄（S），分割螺纹（T）和末端（P）的螺纹紧固件（1）具有从法线到纵向轴线基本平坦的角度延伸的面线表面 （3），其向上转移到限定杯形或凹形面线表面的第一外围边缘和向上延伸到第二周边边缘的下螺纹表面，在第一和第二边缘之间具有径向向内的凹陷。 螺钉显示出显着增加的拉出阻力。

公开(公告)号：WO2011032259A8

公开(公告)日：2012-04-12

申请号：PCT/CA2010000838

申请日：2010-06-04

Applicant: WALTHER MIRCO ,  WALTHER ULRICH ,  WALTHER GERDA

Inventor： WALTHER MIRCO

IPC: F16B25/10 ,  F16B25/02 ,  F16B25/08 ,  F16B39/282

CPC classification number: F16B35/065 ,  Y10T29/49947

Abstract: A screw has a generally flat washer-like head. On an underside of the head are a plurality of cutters or cutting wedges arranged circumferentially around the shank of the screw. The cutters cut or carve off material when the screw is inserted into a fibrous material like wood to thereby facilitate countersinking of the screw head. The cutters may be triangular or quadrilateral wedges. One or more pockets are disposed radially inwardly of the cutters for receiving fibrous material to help lock the screw in place, i.e. to prevent the screw from loosening over time. These pockets may circularly shaped pockets disposed circumferentially around the shank. Alternatively, a single annular pocket may be provided around the shank.

Abstract translation: 螺丝具有大致平坦的垫圈状头部。 在头部的下侧是围绕螺钉的柄周向布置的多个切割器或切割楔。 当螺钉插入诸如木材的纤维材料中时，切割器切割或切掉材料，从而有助于螺钉头的锪孔。 刀具可以是三角形或四边形楔形。 一个或多个凹口设置在切割器的径向内侧，用于接收纤维材料以帮助将螺丝锁定就位，即防止螺钉随着时间的推移而松动。 这些口袋可以围绕柄部圆周地设置成圆形形状的袋。 或者，可以围绕柄部设置单个环形袋。