Patents by Inventor Motoi NIIZUMA

Motoi NIIZUMA 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).

  • Publication number: 20240035514
    Abstract: An object of the invention is to provide a bearing apparatus which is superior in corrosion resistance against a fluorine gas, and superior in dimensional accuracy and durability. For achieving the object, a bearing apparatus for use in an environment where a fluorine gas exists is provided. The bearing apparatus comprises: a magnetic bearing comprising a magnetic member and an electromagnetic coil; and a touchdown bearing for protecting the magnetic bearing, wherein the touchdown bearing comprises an inner ring, an outer ring, and plural rolling members arranged between the inner ring and the outer ring, wherein the inner ring and the outer ring in the touchdown bearing are constructed by using a NiCrAl alloy.
    Type: Application
    Filed: July 24, 2023
    Publication date: February 1, 2024
    Inventors: Ichiju SATOH, Motoi NIIZUMA, Kazuki HIRASAWA, Takuya ISHII