Patents Represented by Attorney, Agent or Law Firm Fish & Richardson P.S.
  • Rail anchoring spike
    Patent number: 6471140
    Abstract: An improved fastener for attaching metal to wood is provided. The fastener is particularly suited for use as a railroad spike for attaching a metal rail to a wooden tie. The improved spike is adapted for installation by either driving or screwing the spike into the tie. A plurality of flutes are adapted to engage with the tie, thereby preventing loosening of the spike. The spike may be used with or without a metal boss or fishplate to secure a metal rail to a wooden tie.
    Type: Grant
    Filed: August 10, 2001
    Date of Patent: October 29, 2002
    Assignee: Lewis Bolt & Nut Company
    Inventors: David M. Barry, Timothy John Austin