The present invention generally relates to fasteners, and particularly to a wall fastener which can be driven into penetrable material such as wood, plastic, plasterboard or the like, and which includes a bifurcated end of which the two legs spread as the fastener is driven, providing a convenient means for securing the fastener to the material in which it is driven.
Generally, prior art anchors which are to be driven into wall materials, such as plasterboard, have either been complex in construction and therefore costly to manufacture, inconvenient to use, or have failed to be fully effective insofar as the retentive power of the anchor is concerned once the latter penetrates the wall or surface.
An example of a prior art diverse type is fully described in U.S. Pat. No. 3,895,773, issued July 22, 1975. This fastener has one obvious drawback; if it is not positioned properly when driven into the wall or object, it will not properly align when twisted, that is the object supporting hook will not be in a plumb position. In the case where the fastener will not be turned enough for proper locking when the hook is plumb will result in a loose or insecure fastener and, likewise, will be loose when the fastener must be turned to align the hook plumb.
There has not been an entirely successful drive fastener until the emergence of the instant invention.