F - Mech Eng,Light,Heat,Weapons – 16 – B
Patent
F - Mech Eng,Light,Heat,Weapons
16
B
85/22
F16B 13/04 (2006.01) F16B 13/00 (2006.01) F16B 13/08 (2006.01) F16B 13/12 (2006.01)
Patent
CA 1041412
ABSTRACT OF THE DISCLOSURE The present invention is directed to an improved fastener for a hollow wall comprising a body portion having an opening therethrough having an axis, an upper surface and a lower surface. The lower surface of the body portion having a pair of opposed outer corners. A gripping leg extending from each of the opposed outer corners, each gripping leg comprising an outer corner and an upper surface extending substantially perpendicular relative to the axis adapted to underlie and abut the lower surface of said body portion. The upper surface of each leg having side corners substantially normal to the outer corner the outer corner of the gripping leg being integral with an pivotally mounted to the lower surface of said body portion whereby insertion of a threaded spreading member through the opening in the body portion will cause said legs to spread apart to permit the legs to grip a wall. Means in the opening to permit spreading members of different sizes to be inserted therein, the said means comprising a plurality of resilient ribs in the said opening substantially parallel to each other. A resilient striking flange extending upwardly from and centrally located on the upper surface of each leg, each striking flange being a thin flange equidistantly spaced inwardly from each side corner. Each flange having flat sides at right angles to the upper surface and having a first straight edge at right angle to the upper surface and a second edge adjacent said first edge extending upwardly and inwardly connecting the first edge with the upper surface whereby upon insertion said spreading member initially striking the said second edge of the flanges to move the legs outwardly and thereafter striking the straight edge of the flanges with the flanges wrapped around the spreading member and the straight edge of the flanges hooked onto the threads of the spreading member to keep the legs in their spread apart position, whereby the fastener is adapted to accommodate threaded member of different sizes and whereby insertion of threaded members of different thicknesses will spread the legs substantially the same distances apart.
246581
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