Self-retaining fastener

Claim 2

A one-piece fastener comprising a base portion, a partly forked, tapering system extending along an axis substantially at right angles to the base portion and terminating in a pointed portion, the forked portions of the stem projecting from opposite sides of an aperture in said base portion and merging to provide said pointed portion with a solid work-puncturing tip, at least two opposed, sharp longitudinal ridges tapering symmetrically on said pointed portion with respect to said axis to converge at said tip, and opposite side wings spaced from and extending toward the base portion from the pointed portion, the wings being resiliently deflectible towards each other and respectively having a locking shoulder portion inclined inwardly as it approaches the base portion.

Claim 3

The fastener of claim 1 molded in symmetrical form relative to a longitudinal axis, the wings being adapted to at least partly extend in and be deflectible in space defined by the forked stem.

Claim 4

The fastener of claim 1 wherein each of the side wings is generally triangular, a leading edge surface of each wing being disposed in continuation of one of said ridges and at a greater angle to said axis than the locking shoulder portion.

Claim 5

The fastener of claim 1 wherein the base portion includes oppositely projectIng, resilient mounting tabs, the tabs when unstressed extending away from the side wings and in their general plane.

Claim 6

The combination with a molding strip, a flexible lining, and a mounting member of a one-piece clip for holding them in assembled relation, said clip comprising a base portion slidably receivable within the molding strip and adapted to bridge spaced shelf portions thereof, semi-cylindrical, generally tapering stem portions projecting from the base portion in substantially parallel relation and merging at a terminal pointed conical portion, said conical portion being defined by radially tapering sharp ridges adapted to slit said lining on penetration of said pointed portion, opposed side wing portions resiliently extending outwardly from the stem portions, respectively, and partly disposed therebetween, said wing portions having leading edge surfaces merging with the pointed conical portion and trailing locking shoulders, the locking shoulders being spaced from the base portion to hold the molding strip, lining, and mounting member in clamped relation when said wings are thrust through an aperture in the member having a wall adapted to cam the wings together.

Claim 7

The combination with a molding strip, a flexible lining, and a mounting member of a one-piece clip for holding them in assembled relation, said clip comprising a base portion slidably receivable within the molding strip and adapted to bridge spaced shelf portions thereof, semi-cylindrical, generally tapering stem portions projecting from the base portion in substantially parallel relation and merging at a terminal pointed conical portion, said conical portion being defined by radially tapering sharp ridges adapted to slit said lining on penetration of said pointed portion, opposed side wing portions resiliently extending outwardly from the stem portions, respectively, and partly disposed therebetween, said wing portions having leading edge surfaces merging with the pointed conical portion and trailing locking shoulders, the locking shoulders being spaced from the base portion to hold the molding strip, lining, and mounting member in clamped relation when said wings are thrust through an aperture in the member having a wall adapted to cam the wings together.

Claim 8

The combination of claim 5 wherein the base portion of the clip is formed with opposed resilient tabs engageable with the molding strip and, when unstressed, extend in the general plane of said wings and away therefrom.

Claim 9

The combination of claim 5 wherein the said terminal portion is comprised of four equi-angularly spaced merging ridges for facilitating hole forming, two of said ridges lying in the plane of said opposed side wing portions.