| 摘要 |
<p>TITLE: FASTENER GUIDANCE AND RETENTION TIP MEMBER INVENTOR: Frederick J. Harris DOCKET NO.: R-1173 A guidance and retention member, for use with a naillike fastener of the type adpated to be driven by a powder-actuated tool, comprising an axially elongate, hollow, cylindrical body adapted for telescopic retention on the nose of the fastener and of an even number of flexible, radially extending fins, wherein alternating ones of the fins are of substantially greater radial extent than the fins adjacent thereto. The shorter fins, although nominally of the same thickness as the longer ones, are more rigid by virtue of their lower length-to-thickness ratio and act to limit pre-firing eccentricity of the fastener relative to the tool.</p> |
