Strip of collated fasteners for fastener-driving tool

  • US 5,069,340 A
  • Filed: 03/05/1991
  • Issued: 12/03/1991
  • Est. Priority Date: 03/05/1991
  • Status: Expired due to Term
First Claim
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1. A strip of collated fasteners, the strip comprising a plurality of fasteners and a carrier molded from a polymeric material, each fastener having an elongate shank with a pointed end and a head and being designed to be forcibly driven through a workpiece, into a substrate, the shank having a portion flaring outwardly where the shank adjoins the head, the carrier comprising a separate sleeve associated with each fastener, a representative sleeve including an annular portion and a breakable portion integral with the annular portion, the representative sleeve gripping the shank of the associated fastener with the annular portion nearer to the pointed end of the shank of the associated fastener and with the breakable portion nearer to the head of the associated fastener, the breakable portion having an end opposite to the annular portion and having a pair of similar laterally opposed, outwardly opening, continuously curved, concave recesses shaping the breakable portion so that the breakable portion constitutes means for breaking into at least two segments, approximately along a vertical plane bisecting each of the concave recesses, when the outwardly flaring portion of the shank of the associated fastener bears against said end of the breakable portion as the associated fastener is being driven forcibly through a workpiece, into a substrate, after the annular portion has been arrested by the workpiece, the annular portion constituting means for eliminating any gap between the head of the associated fastener and the workpiece after the associated fastener has been driven, the respective segments tending to remain integral with the annular portion after the associated fastener has been driven, the carrier comprising frangible bridges between adjacent ones of the sleeves of the carrier.

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