Patents by Inventor Shinzi Saruwatari

Shinzi Saruwatari 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).

  • Patent number: 4331897
    Abstract: A commutator apparatus for rotary electric machines comprises a plurality of commutator segments mounted side by side on a rotary shaft through an insulating ring along the periphery thereof, an armature winding wound on a rotor core and including a plurality of coil ends projected axially from the rotor core, and a plurality of risers made of a conductor, one end of each thereof being connected to one axial end of the corresponding commutator segments, the other end of the riser being securely connected to one end of the corresponding armature coil. Each pair of adjacent risers are bound by an insulating binder to reduce the space therebetween, thus forming a substantially delta-shaped space defined by the adjacent risers on each side of said binder. The vibrations of the risers are thus absorbed and the vibratory stress of the risers is reduced, thus improving the mechanical strength and reliability of the commutator apparatus.
    Type: Grant
    Filed: April 3, 1980
    Date of Patent: May 25, 1982
    Assignee: Hitachi, Ltd.
    Inventors: Tadashi Sonobe, Mitsuhiro Nitobe, Shinzi Saruwatari, Sueo Kawai, Toshio Hattori