| 摘要 |
An anchoring device (10) having a head (12) and a shank (20) and arranged to be forcibly driven into a hole (50) in concrete or masonry (54). The shank (20) has proximal (14), transitional (24), and distal (22) portions defining respective axes that do not coincide when the shank (20) is unstressed and defining proximal (60) and distal (62) elbows. Notches (70) enhancing frictional engagement between the shank (20) and the hole (50) wall are formed at convex surfaces of the elbows ( 60, 62 ), as well as along substantially cylindrical surfaces of the proximal (14), transitional (24), and distal (22) portions of the shank (20). |
