US4296580 Jul 23, 1980 Oct 27, 1981 Weinar; Roger N. Wall constructed from panels held in position with the aid of concealed fasteners and concealable fasteners for use in assembling such wallUS4296580 1980年7月23日 1981年10月27日 Weinar Roger N Wall constructed from panels held in ...
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When the fasteners have been secured to their respective panels, the panels are pushed together forming a concealed, self-locking joint which results from interengagement of the fasteners as the panels are pushed together. Fasteners of this general type have been known and used for many years. ...
Mechanically held fasteners or clips invisibly secure common end- abutting wallboard panels to common wood or metal framing members. The fasteners are spaced apart, extending from the backs of wallboard panels and beyond their vertical ends so as to be conveniently screw fastened to a framing ...
a plurality of fasteners located along the first edge on the interior surface of the first layer; a plurality of corresponding fasteners located along the first edge on the exterior surface of the second layer and positioned underneath the unattached segments of the bottom edge of the waistband; ...