Patents by Inventor Masanori Hansaka

Masanori Hansaka 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).

  • Vibration damping material
    Patent number: 5300355
    Abstract: In order to provide a damping material exhibiting an excellent vibration damping property in a wide temperature range, according to the present invention, in a magnetic composite type damping material constructed by bonding an adhesive elastic sheet containing magnetic powder to a constraining plate such as a metal plate by using an adhesive, the adhesive elastic sheet is made of a composite material consisting of rubber elastomer, adhesive resin, plasticizer, magnetic powder, etc.Since not only is the damping material having a construction described above attracted by magnetic force against a vibration source, it also is provided with a superficial adhesiveness, and the excellent vibration damping property is exhibited in a wide temperature range by a synergistic effect of the magnetic force and the adhering force.
    Type: Grant
    Filed: May 20, 1992
    Date of Patent: April 5, 1994
    Assignees: Nichias Corporation, Railway Technical Research Institute
    Inventors: Naoto Mifune, Yasutaka Nagai, Masaaki Ashizawa, Kazuo Nishimoto, Takahiro Niwa, Shuji Ito, Masanori Hansaka