Patents by Inventor Hiroyasu Fukushima

Hiroyasu Fukushima 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).

  • Apparatus and method for manufacturing thick-walled bent pipe
    Patent number: 6715334
    Abstract: An apparatus and a method for manufacturing a thick-walled bent pipe with a simple structure at low production cost, which has durability and can manufacture an elbow material for piping with higher size accuracy, are provided. For this purpose, the manufacturing apparatus is a manufacturing apparatus comprising a presser die (12) and a lower die (20), in which the lower die (20) includes a pair of bottom dies (21, 22) having meshing means (30), and a pair of the bottom dies (21, 22) are allowed to rotate opposite to each other by the meshing means (30), in connection with a descent of the presser die.
    Type: Grant
    Filed: November 16, 2001
    Date of Patent: April 6, 2004
    Assignee: Tokiwa Seiki Co., Ltd.
    Inventors: Yoichi Kimura, Hiroyasu Fukushima
  • Apparatus and method for manufacturing thick-walled bent pipe
    Publication number: 20020129636
    Abstract: An apparatus and a method for manufacturing a thick-walled bent pipe with a simple structure at low production cost, which has durability and can manufacture an elbow material for piping with higher size accuracy, are provided. For this purpose, the manufacturing apparatus is a manufacturing apparatus comprising a presser die (12) and a lower die (20), in which the lower die (20) includes a pair of bottom dies (21, 22) having meshing means (30), and a pair of the bottom dies (21, 22) are allowed to rotate opposite to each other by the meshing means (30), in connection with a descent of the presser die.
    Type: Application
    Filed: November 16, 2001
    Publication date: September 19, 2002
    Applicant: TOKIWA SEIKI CO., LTD.
    Inventors: Yoichi Kimura, Hiroyasu Fukushima