Patents by Inventor Andrew Q. Liu

Andrew Q. Liu 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: 8661610
    Abstract: A floor cleaner including a nozzle and a handle assembly pivotably mounted to the nozzle. The handle assembly including a handle, a motor housing supporting a suction source in fluid communication with the nozzle, and a bag housing. A door is removably coupled to the bag housing and includes a door handle and a filter bag retaining structure.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: March 4, 2014
    Assignee: Techtronic Floor Care Technology Limited
    Inventors: Andrew Q. Liu, Mark E. Cipolla, Steven R. Dings
  • Publication number: 20130167320
    Abstract: A vacuum cleaner includes a foot, a handle pivotally attached to the foot, a suction source, and a display disposed on one of the handle and the foot. The foot includes a suction nozzle. The handle is pivotal relative to the foot about an axis of rotation. The suction source is in fluid communication with the suction nozzle. The display is for displaying content in a first orientation relative to the display and a second orientation relative to the display based on the position of the handle relative to the foot. The second orientation is different than the first orientation.
    Type: Application
    Filed: December 30, 2011
    Publication date: July 4, 2013
    Inventors: Andrew Q. Liu, Susan S. Roberts, Steven W. Kostreba
  • Publication number: 20110219578
    Abstract: A floor cleaner including a nozzle and a handle assembly pivotably mounted to the nozzle. The handle assembly including a handle, a motor housing supporting a suction source in fluid communication with the nozzle, and a bag housing defining a filter cavity. A door is removably coupled to the handle assembly and includes a retainer configured to secure a filter bag including a bag aperture to the door such that the door and the retainer are removable from the handle assembly as an assembly. The retainer includes a retainer handle positioned above the bag aperture.
    Type: Application
    Filed: March 11, 2011
    Publication date: September 15, 2011
    Inventors: Andrew Q. Liu, Mark E. Cipolla
  • Publication number: 20110219582
    Abstract: A floor cleaner including a nozzle and a handle assembly pivotably mounted to the nozzle. The handle assembly including a handle, a motor housing supporting a suction source in fluid communication with the nozzle, and a bag housing. A door is removably coupled to the bag housing and includes a door handle and a filter bag retaining structure.
    Type: Application
    Filed: March 11, 2011
    Publication date: September 15, 2011
    Inventors: Andrew Q. Liu, Mark E. Cipolla, Steven R. Dings