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Industrial pallets and methods of manufacture of panel structures

  • US 5,298,098 A
  • Filed: 06/17/1991
  • Issued: 03/29/1994
  • Est. Priority Date: 03/22/1991
  • Status: Expired due to Fees
First Claim
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1. A process of manufacturing an industrial pallet having a platform, a planar reinforcement and a plurality of hollow cylindrical spacers disposed therebetween, said spacers having thermoplastic end portions and said platform and reinforcements having thermoplastic portions to contact the ends of the spacers, said process comprising:

  • placing opposed ends of at least one of said cylindrical spacers in thermoplastic contact with the thermoplastic portion of the platform and the thermoplastic portion of the reinforcement;

    and holding the platform and the reinforcement stationary whilst the cylindrical spacer is rotated relatively thereto under pressure, about its longitudinal axis, to effect simultaneous friction welding of the cylindrical spacer to the platform and the reinforcement.

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