Patents by Inventor Tom Minh Nguyen

Tom Minh Nguyen 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).

  • Vacuum cleaner with hair wrap cutter
    Patent number: 6892420
    Abstract: A vacuum cleaner that has a rotary floor agitator driven by a motor has a hair cutter blade mounted adjacent a motor shaft that drives the agitator and/or at the ends of the agitator. The agitator is driven by an electric motor through a drive belt. The cutter blade(s) are designed to sever elongate particles, such as hair or threads that would build up on the agitation brush, drive belt and motor output shaft to hinder the operation of the brush and belt or otherwise dislodged the belt from the motor shaft.
    Type: Grant
    Filed: August 12, 2002
    Date of Patent: May 17, 2005
    Assignee: Bissell Homecare, Inc.
    Inventors: David L. Haan, Tom Minh Nguyen