Patents by Inventor Chang W. Son

Chang W. Son 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).

  • Low noise and less vibration vacuum cleaner
    Patent number: 5293664
    Abstract: A vacuum cleaner with noise and vibration greatly reduced is disclosed. The vacuum cleaner includes a blower assembly which comprises a vibration absorbing assembly for absorbing vibrations occurring due to high speed revolutions of electric blower, a noise shielding assembly for shielding the noise so as to prevent the noise from being propagated from the electric blower to outside of the vacuum cleaner, a flow path changing assembly for curving and extending a flow path by bending the flow path of air after passing through the electric blower, and a noise absorbing assembly suppressing the noise by absorbing the noise propagated through the flow path. The vacuum cleaner further includes a blower assembly receiving section, which shields and absorbs the noise.
    Type: Grant
    Filed: January 2, 1992
    Date of Patent: March 15, 1994
    Assignee: Daewoo Electronics Co., Ltd.
    Inventors: Moo S. Lim, Chang W. Son, Sang B. Kang