Patents by Inventor Hui Hiu Kwan

Hui Hiu Kwan 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 sweeper apparatus including a filter bag and a method of installation
    Patent number: 8439997
    Abstract: A filter bag and an apparatus for attaching a filter bag to a vacuum sweeper are provided. The filter bag includes a top plate and a bag portion. The top plate has a key formed thereon. The apparatus includes a sled configured to receive a portion of a filter bag having a key formed thereon. The apparatus also includes a sweeper housing. The sweeper housing is adjacent the sled. The housing has a cavity for receiving a portion of the filter bag and a lock that interconnects with the key. A method for installing the filter bag in a vacuum sweeper is also provided.
    Type: Grant
    Filed: August 16, 2011
    Date of Patent: May 14, 2013
    Assignee: NSS Enterprises, Inc.
    Inventors: Mark N. Rupp, Dale A. Krausnick, Hui Hiu Kwan, Li Jin Long, Paul Goetz, Jeffery Scott Kunkler, Rob Fischner, Aurelio M. Arellano, Jr.
  • VACUUM SWEEPER APPARATUS INCLUDING A FILTER BAG AND A METHOD OF INSTALLATION
    Publication number: 20130042586
    Abstract: A filter bag and an apparatus for attaching a filter bag to a vacuum sweeper are provided. The filter bag includes a top plate and a bag portion. The top plate has a key formed thereon. The apparatus includes a sled configured to receive a portion of a filter bag having a key formed thereon. The apparatus also includes a sweeper housing. The sweeper housing is adjacent the sled. The housing has a cavity for receiving a portion of the filter bag and a lock that interconnects with the key. A method for installing the filter bag in a vacuum sweeper is also provided.
    Type: Application
    Filed: August 16, 2011
    Publication date: February 21, 2013
    Applicant: NSS ENTERPRISES, INC.
    Inventors: MARK N. RUPP, Dale A. Krausnick, Hui Hiu Kwan, Li Jin Long, Paul Goetz, Jeffery Scott Kunkler, Rob Pfischner, Aurelio M. Arellano, JR.