Patents by Inventor Tadashi Hiraga

Tadashi Hiraga 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).

  • Reinforcing structure of cylinder barrel
    Patent number: 7412956
    Abstract: A cylinder barrel (1) for housing a piston comprises a sheet metal liner (2) and a reinforcing structure (10) located outside the sheet metal liner (2). The reinforcing structure (10) comprises a glass-fiber-reinforcing layer (12) and a carbon-fiber-reinforcing layer (13). The glass-fiber-reinforcing layer (12) comprises a plain cloth (20) made of glass fiber covering the sheet metal liner (2). The carbon-fiber-reinforcing layer (13) comprises a carbon fiber string (31) wound around the outer circumference of the glass-fiber-reinforcing layer (12) along a spiral path. According to the this construction, the reinforcing structure (10) has a high flexibility which is required for preventing cracks in the reinforcing structure (10) while maintaining a high rigidity of the entire cylinder barrel (1).
    Type: Grant
    Filed: April 26, 2006
    Date of Patent: August 19, 2008
    Assignee: Kayaba Industry Co., Ltd.
    Inventors: Mitsunori Gotou, Tadashi Hiraga
  • Reinforcing structure of cylinder barrel
    Publication number: 20060255047
    Abstract: A cylinder barrel (1) for housing a piston comprises a sheet metal liner (2) and a reinforcing structure (10) located outside the sheet metal liner (2). The reinforcing structure (10) comprises a glass-fiber-reinforcing layer (12) and a carbon-fiber-reinforcing layer (13). The glass-fiber-reinforcing layer (12) comprises a plain cloth (20) made of glass fiber covering the sheet metal liner (2). The carbon-fiber-reinforcing layer (13) comprises a carbon fiber string (31) wound around the outer circumference of the glass-fiber-reinforcing layer (12) along a spiral path. According to the this construction, the reinforcing structure (10) has a high flexibility which is required for preventing cracks in the reinforcing structure (10) while maintaining a high rigidity of the entire cylinder barrel (1).
    Type: Application
    Filed: April 26, 2006
    Publication date: November 16, 2006
    Inventors: Mitsunori Gotou, Tadashi Hiraga