Patents Examined by Bernard P. Pianalto
  • Patent number: 4842890
    Abstract: A method and apparatus for coating a fastener, particularly a fastener with a head portion and shank portion, with a coating material is provided. The invention includes the steps of and apparatus for supporting the fasteners such that the fasteners are positioned for coating. The fasteners are conveyed such that the fasteners are moved through a plurality of operation stations and pass through a heating station where the shank portions of the fasteners are heated. Subsequently, at a material applying station, a coating material is applied to the heated shank portions. A preferred embodiment of the method and apparatus of the present invention includes supporting the fasteners on their head portions with the shank portions projecting upward, conveying the fasteners with their shank portions projecting upward for processing, heating the shank portion to a temperature above the melting point of the applied material and applying the material to the heated shank portion to form a coating thereon.
    Type: Grant
    Filed: July 7, 1987
    Date of Patent: June 27, 1989
    Assignee: Nylok Fastener Corporation
    Inventors: Eugene D. Sessa, Richard Duffy