Patents by Inventor Syuzou Ueyama

Syuzou Ueyama 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).

  • Dust-collecting device for vacuum cleaner and upright type vacuum cleaner
    Patent number: 6192550
    Abstract: A dust-collecting device for a vacuum cleaner comprising a dust-collecting case which is fitted into a suction path extending from a suction nozzle to a motor fan and from which accumulated dust can be discharged by opening a bottom lid of the dust-collecting case, and a cylindrical filter fitted into the dust-collecting case. The filter is arranged to be rotatable, a spiral rib is formed at an outer periphery of the filter, and the device is equipped with a rotating means for rotating the filter. Dust which cannot be discharge by its own weight since it is in a compressed state can be pushed out through the spiral rib formed on the outer periphery of the filter by rotating the filter, so that dust accumulated within the dust-collecting case in a compressed state can be easily discharged.
    Type: Grant
    Filed: January 28, 2000
    Date of Patent: February 27, 2001
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Atsuo Hamada, Kazumasa Kamatani, Kazuyoshi Yoshimi, Atsushi Okuda, Souji Sakata, Naoki Suetsugu, Syuzou Ueyama, Nobuaki Takahashi