Combination vibration damper and fastener for union of two panels

Claim 1

A combination vibration damper and fastener for use in the union of two panels, comprising in combination a pair of plastic fastener portions opposed back to back to each other across a space in the axial direction, said fastener portions each being composed of a head portion, a shank extended downwardly from said head portion, and an engaging piece provided on the outer surface of said shank and extended radially outwardly therefrom and toward the head portion to provide a surface for engagement with a panel being fastened, a plurality of arcuately spaced substantially U-shaped resilient connecting pieces manifesting resiliency in the axial direction and serving to connect the opposed head portions to each other, a pair of vibration damper pieces extended in the radial direction from each head portion and manifesting resiliency in the axial direction, there being a plurality of arcuately spaced vibration damper pieces on each head portion substantially coplanar with and alternating with said connecting pieces, the leading ends of said damper pieces from the two head portions being opposed to each other, said damper pieces normally being axially spaced apart and movable into engagement upon loading of said damper, said damper pieces extended aslant from the fastener head portions so as to be opposed to each other and extending radially a substantial distance beyond said shank.