Patents by Inventor Hironobu Hosoda

Hironobu Hosoda 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).

  • Oil seal of hydraulic shock absorber
    Patent number: 6659470
    Abstract: In an oil seal of a hydraulic shock absorber, the oil seal is made of a nitrile rubber of a low nitrile, and an inner diameter of a second lip is set to be smaller within a range between 0.3 and 1.0 mm &phgr; than an outer diameter of a piston rod.
    Type: Grant
    Filed: November 7, 2001
    Date of Patent: December 9, 2003
    Assignee: Showa Corporation
    Inventors: Hironobu Hosoda, Noriaki Maneyama
  • Dust lip structure of oil seal for oscillation
    Patent number: 6612582
    Abstract: In a dust lip structure of an oil seal 20 for oscillation, a thickness of the front end portion of the dust lip 40 is substantially two thirds of an interference A of the first dust lip portion 41 with respect to the rod 13, and an outer diameter of the dust lip 40 is set to be in parallel to each of a front end side taper-like inner diameter portion 43B from the first dust lip portion 41 to a root portion of the second dust lip portion 42 and a base end side taper-like inner diameter portion 44B from the second dust lip portion 42 to the base end portion.
    Type: Grant
    Filed: December 20, 2001
    Date of Patent: September 2, 2003
    Assignee: Showa Corporation
    Inventor: Hironobu Hosoda
  • Oil seal of hydraulic shock absorber
    Publication number: 20020092722
    Abstract: In an oil seal of a hydraulic shock absorber, the oil seal is made of a nitrile rubber of a low nitrile, and an inner diameter of a second lip is set to be smaller within a range between 0.3 and 1.0 mm &phgr; than an outer diameter of a piston rod.
    Type: Application
    Filed: November 7, 2001
    Publication date: July 18, 2002
    Inventors: Hironobu Hosoda, Noriaki Maneyama
  • Dust lip structure of oil seal for oscillation
    Publication number: 20020079650
    Abstract: In a dust lip structure of an oil seal 20 for oscillation, a thickness of the front end portion of the dust lip 40 is substantially two thirds of an interference A of the first dust lip portion 41 with respect to the rod 13, and an outer diameter of the dust lip 40 is set to be in parallel to each of a front end side taper-like inner diameter portion 43B from the first dust lip portion 41 to a root portion of the second dust lip portion 42 and a base end side taper-like inner diameter portion 44B from the second dust lip portion 42 to the base end portion.
    Type: Application
    Filed: December 20, 2001
    Publication date: June 27, 2002
    Inventor: Hironobu Hosoda
  • Inverted strut damper
    Patent number: 6105945
    Abstract: An inverted strut damper includes an external cylinder which has an expanded midsection and a vertically moveable damper tube arranged concentrically within the outer cylinder. The outer cylinder and tube arrangement form a lubricating oil supply reservoir. Disposed at a top and a bottom of the outer cylinder is a respective oil seal and bearing arrangement. The upper bearing is adjacent to the lubricating oil reservoir and upon upper movement of the damper tube, oil is supplied to the upper bearings and seal.
    Type: Grant
    Filed: November 7, 1997
    Date of Patent: August 22, 2000
    Assignee: Showa Corporation
    Inventors: Takashi Takeuchi, Hironobu Hosoda