Patents by Inventor Masakatsu Nagashima

Masakatsu Nagashima 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).

  • Joint structure and joining method
    Patent number: 8113735
    Abstract: A joining component is joined to a joint component. The joining component includes an insertion hole and two fitting holes. The joint component includes a fusible shaft at a position corresponding to the insertion hole and two protrusions at positions corresponding to the fitting holes. The joining component is placed on the joint component such that the fusible shaft is inserted into the insertion hole, and the protrusions fit into the fitting holes. The fusible shaft is then fused by using ultrasonic vibrations.
    Type: Grant
    Filed: March 6, 2006
    Date of Patent: February 14, 2012
    Assignee: NHK Spring Co., Ltd.
    Inventors: Jun Tominaga, Ryohei Shigematsu, Masakatsu Nagashima
  • Joint Structure and Joining Method
    Publication number: 20090263183
    Abstract: A joining component is joined to a joint component. The joining component includes an insertion hole and two fitting holes. The joint component includes a fusible shaft at a position corresponding to the insertion hole and two protrusions at positions corresponding to the fitting holes. The joining component is placed on the joint component such that the fusible shaft is inserted into the insertion hole, and the protrusions fit into the fitting holes. The fusible shaft is then fused by using ultrasonic vibrations.
    Type: Application
    Filed: March 6, 2006
    Publication date: October 22, 2009
    Applicant: NHK SPRING CO., LTD.
    Inventors: Jun Tominaga, Ryohei Shigematsu, Masakatsu Nagashima