Patents by Inventor Norifumi Kasai

Norifumi Kasai 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).

  • Striking device and natural frequency measuring device
    Patent number: 10969312
    Abstract: Provided are a striking device and a natural frequency measuring device capable of simply and accurately measuring a natural frequency of a system including force detector. The striking device includes an arm capable of swinging around a spindle, and a steel ball arranged in an end part of the arm on a side opposite to the spindle. The spindle is supported by a supporting part capable of lifting up and down relative to a post erected on a magnet stand. A supporting part for supporting a supporting plate is arranged at a position in the post and above the supporting part. A permanent magnet is placed above the supporting plate. The steel ball falls down in an arc shape from a standby height position when the permanent magnet is removed.
    Type: Grant
    Filed: January 16, 2019
    Date of Patent: April 6, 2021
    Assignees: SHIMADZU CORPORATION, Osaka Research Institute of Industrial Science and Technology, City of Nagoya, AKITA PREFECTURE
    Inventors: Tadaoki Takii, Masaki Nishimura, Satoshi Taniguchi, Mitsuhiko Kimura, Norifumi Kasai
  • Nozzle for discharging molten metal used in a casting device
    Patent number: 5046647
    Abstract: A nozzle for discharging molten metal used in a casting device, wherein at least an inner surface portion defining a nozzle bore of the nozzle is made of a refractory, whereby a blockage of the nozzle bore is effectively prevented.
    Type: Grant
    Filed: August 22, 1990
    Date of Patent: September 10, 1991
    Assignees: Toshiba Ceramics Co., Ltd., Sumitomo Metal Industries, Ltd.
    Inventors: Kazuhide Kawai, Hiroyuki Mori, Satoshi Oya, Seiya Sugita, Morio Kawasaki, Norifumi Kasai