Patents by Inventor Junya Narukawa

Junya Narukawa 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).

  • Method and apparatus for adjusting spring characteristics of a spring
    Patent number: 9453548
    Abstract: The present application provides a method for adjusting spring characteristics of a spring to desired spring characteristics. In the adjusting method of the present application, first, the spring is compressed until a “load-displacement” measurement line obtained by measuring the load applied to the spring and the displacement of the spring meets a “load-displacement” target line determined based on “load-displacement” characteristics of the spring and the desired spring characteristics (S10-S14). Next, the spring is expanded such that the load applied to the spring decreases along the “load-displacement” target line (S18).
    Type: Grant
    Filed: March 22, 2016
    Date of Patent: September 27, 2016
    Assignee: CHUO HATSUJO KABUSHIKI KAISHA
    Inventors: Shinsuke Okura, Shuji Kamiya, Yukimasa Kabeya, Junya Narukawa, Takashi Goto
  • METHOD AND APPARATUS FOR ADJUSTING SPRING CHARACTERISTICS OF A SPRING
    Publication number: 20160201749
    Abstract: The present application provides a method for adjusting spring characteristics of a spring to desired spring characteristics. In the adjusting method of the present application, first, the spring is compressed until a “load-displacement” measurement line obtained by measuring the load applied to the spring and the displacement of the spring meets a “load-displacement” target line determined based on “load-displacement” characteristics of the spring and the desired spring characteristics (S10-S14). Next, the spring is expanded such that the load applied to the spring decreases along the “load-displacement” target line (S18).
    Type: Application
    Filed: March 22, 2016
    Publication date: July 14, 2016
    Applicant: Chuo Hatsujo Kabushiki Kaisha
    Inventors: Shinsuke Okura, Shuji Kamiya, Yukimasa Kabeya, Junya Narukawa, Takashi Goto
  • Method and apparatus for adjusting spring characteristics of a spring
    Patent number: 9322447
    Abstract: The present application provides a method for adjusting spring characteristics of a spring to desired spring characteristics. In the adjusting method of the present application, first, the spring is compressed until a “load-displacement” measurement line obtained by measuring the load applied to the spring and the displacement of the spring meets a “load-displacement” target line determined based on “load-displacement” characteristics of the spring and the desired spring characteristics (S10-S14). Next, the spring is expanded such that the load applied to the spring decreases along the “load-displacement” target line (S18).
    Type: Grant
    Filed: January 14, 2011
    Date of Patent: April 26, 2016
    Assignee: CHUO HATSUJO KABUSHIKI KAISHA
    Inventors: Shinsuke Okura, Shuji Kamiya, Yukimasa Kabeya, Junya Narukawa, Takashi Goto
  • Method And Apparatus For Adjusting Spring Characteristics Of A Spring
    Publication number: 20120285212
    Abstract: The present application provides a method for adjusting spring characteristics of a spring to desired spring characteristics. In the adjusting method of the present application, first, the spring is compressed until a “load-displacement” measurement line obtained by measuring the load applied to the spring and the displacement of the spring meets a “load-displacement” target line determined based on “load-displacement” characteristics of the spring and the desired spring characteristics (S10-S14). Next, the spring is expanded such that the load applied to the spring decreases along the “load-displacement” target line (S18).
    Type: Application
    Filed: January 14, 2011
    Publication date: November 15, 2012
    Applicant: CHUO HATSUJO KABUSHIKI KAISHA
    Inventors: Shinsuke Okura, Shuji Kamiya, Yukimasa Kabeya, Junya Narukawa, Takashi Goto