Patents by Inventor Akio Totsuka

Akio Totsuka has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5401563
    Abstract: An improved tier sheet and method for producing the same. The tier sheet is suitable for use in conveying receptacles such as cans and bottles with palletizing and depalletizing operations and it can allow the smooth sliding of receptacles in loading and unloading and can avoid the slipping off of receptacles during conveying operation. The tier sheet comprises a first zone having a first frictional resistance and a second zone having a second frictional resistance, wherein the second frictional resistance is lower than the first frictional resistance. The method of the invention comprises a feeding means to feed a tier sheet material, a forming means to form the first zone and the second zone, and a cutting means to cut the formed tier sheet.
    Type: Grant
    Filed: July 24, 1991
    Date of Patent: March 28, 1995
    Assignee: Nippon Petrochemicals Company, Limited
    Inventors: Akihide Kurata, Akio Totsuka
  • Patent number: 5267848
    Abstract: For the purpose of mass-producing sheet pallets made of a synthetic resin with a high productivity and without difficulty, an apparatus for manufacturing sheets is provided, which apparatus includes a process (1001) to feed sheet materials in a predetermined shape and having corner portions, a process (1002) to form sheets of a desired shape by cutting at least the corner portions of said sheet materials and a process (280) to stack said sheets
    Type: Grant
    Filed: February 3, 1992
    Date of Patent: December 7, 1993
    Assignee: Nippon Petrochemicals Company, Limited
    Inventor: Akio Totsuka
  • Patent number: 5250246
    Abstract: A method of manufacturing pallets from sheets of substantially the same dimensions as the dimensions of the pallets to be manufactured by the steps of sequentially feeding sheets of a predetermined polygonal shape, cutting substantially at one time a plurality of corner portions of the thus fed sheets to obtain pallets and then discharging the thus obtained pallets. Belt conveyors sequentially feed sheets of a predetermined polygonal shape and cutting dies cut substantially at one time the rear corner portions of the preceding sheet and the front corner portions of the following sheet to obtain pallets and belt conveyors sequentially discharge the thus obtained pallets. When a ruled line, that is, an elongate recess or the like for bending is needed in the resulting pallets, cutting of the corner portions and formation of the ruled line are effected substantially at one time.
    Type: Grant
    Filed: November 16, 1990
    Date of Patent: October 5, 1993
    Assignee: Nippon Petrochemicals Co., Ltd.
    Inventor: Akio Totsuka