System and methods for wall and ceiling fastening

摘要

A system (100, 600, 700) for fastening objects to a wall or ceiling (120) comprises a rear, wall-anchor section (105, 607, 705) with a bore, and a front, pivotable section (110, 602, 604, 720), rigidly abutted together with no gap, aligned by a projection (135), and connected by a “living” hinge, strap, flap, lanyard or other type of connector (115). The pivotable section has a sharpened tip (112, 630, 635, 725) for penetrating the wall while the fastener is forced into the wall by a hammer or other driving tool or device, or manually by hand. The two sections of the fastener have a tapered, elliptical cross-section (111) which both prevents rotation of the fastener and locally reduces load-responsive pressure in the wallboard. To install, the axes of the wall-anchor and pivotable sections of the fastener are first aligned. The fastener is forced into the wall one of the above means. Then a pin (140) is manually inserted into the bore of the wall-anchor section. When the pin meets the projection the pivotable section is forced to rotate about the hinge. A locking tooth (139) secures the pin by interfering with either threads or notches in the pin. Alternatively, the pin forces past the projection and wedges between the projection and the bore of the wall-anchor section.

主权项

1. A wall anchor, comprising:
an elongated member comprising a distal pivotable section and a proximal wall anchor section, an outer perimeter of said distal pivotable section being aligned substantially symmetrically and coaxially along a short axis and along a long axis with an outer perimeter of said proximal wall anchor section in an initial configuration, said proximal wall anchor section having an outer cross-section with the short axis and the long axis, a bore therethrough, and a mating surface facing said distal pivotable section in said initial configuration, said distal pivotable and proximal wall anchor sections being pivotably joined so that said distal pivotable section can pivot with respect to said proximal wall anchor section, said distal pivotable section having a sharp forward end, said sharp forward end and said bore being collinear with one another, said distal pivotable section having a cam follower portion with a cammable or cam follower surface opposite said forward end and facing said proximal wall anchor section, said cammable surface positioned so that when said elongated member is in said initial configuration and an elongated activating member is inserted through said bore of said proximal wall anchor section, said activating member will contact said cammable surface and force said distal pivotable section to pivot away from said proximal wall anchor section to an expanded or anchoring configuration, said distal pivotable section having a mating surface facing and contiguous to said mating surface of said proximal wall anchor section when said elongated member is in said initial configuration so that when said wall anchor is driven into a wall, said distal pivotable and proximal wall anchor sections will retain said initial configuration and will not pivot apart or separate until activated to said expanded or anchoring configuration.