| 摘要 |
A one-piece, pre-shaped anchor adapted to be forcibly driven axially into a tightly-fitting hole so that the anchor makes a strong interference fit therein. The anchor is constituted by a drivable element and an elongated shank integral therewith. The shank is pre-shaped to have an end portion furthest from the element which extends in the direction of the longitudinal axis passing through the element and shank, and to have at least one undulation between the element and the end portion that creates a bend having a peak on one side of the shank between spaced apart base portions on the other side of the shank. The anchor is formed of resilient material, whereby when the shank is driven into the tightly-fitting hole, the undulation will then be forcibly altered by reaction with the wall of the hole, and in seeking to recover its originl shape, will secure the anchor in place.
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