Patents Assigned to Nippon Plastic Pallet Corporation
  • Patent number: 6237509
    Abstract: A synthetic resin pallet capable of enhancing a strength against a bending force acting in a direction right-angled to a loading surface without an increase in weight of the whole pallet. The synthetic resin pallet is constructed such that pallet constructive members taking configurations of the pallet being divided into upper and lower members are formed by, e.g., injection molding, then set facing to each other and integrally welded. A reinforced tape using a fiber reinforced material which is bendable is attached for reinforcement by the heat welding inside a groove formed on a surface of any one or both of the pallet constructive members in order to resist a bending force acting in a direction orthogonal to the surface thereof.
    Type: Grant
    Filed: October 25, 1999
    Date of Patent: May 29, 2001
    Assignees: Nippon Plastic Pallet Corporation, Mitsubishi Chemical Corporation, Dainippon Ink and Chemicals, Inc.
    Inventors: Satoshi Ishido, Yuzo Hayakawa, Isami Koyama
  • Patent number: 6138582
    Abstract: With a synthetic resin pallet provided with large open portions in an under surface portion for handling with a hand lifter, the aim is to improve the strength of the under surface portion. Therefore there is provided a synthetic resin pallet having an upper surface portion and an under surface portion which is provided with large open portions, the upper surface portion and the under surface portion being connected by columns, with fork insertion apertures formed between the columns, the synthetic resin pallet being integrally formed by connecting a pallet upper part integrally formed with the upper surface portion and column main portions, and a strengthened pallet lower part integrally formed with the under surface portion and column lower end portions, by the respective columns.
    Type: Grant
    Filed: March 22, 1999
    Date of Patent: October 31, 2000
    Assignees: Dainippon Ink and Chemicals, Inc., Nippon Plastic Pallet Corporation
    Inventors: Mitsuru Fujii, Tomoyuki Dobashi, Kiyoshi Kurosawa, Junro Sugihara