Patents by Inventor Michael Stewart Wilmo

Michael Stewart Wilmo 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).

  • Hopper assembly with filter module for surface maintenance machine
    Patent number: 8458855
    Abstract: A mobile surface maintenance machine with a debris hopper and a filter module providing at least two filter stages for separating dust and debris within the debris hopper, the filter module including a filter shaking mechanism and a housing adapted to seal against the upper opening of the debris hopper, and wherein the debris hopper is removed from air communication with the exhaust fan when the debris hopper is in a debris dump configuration and is returned to air communication with the exhaust fan when the debris hopper is lowered into an operational configuration.
    Type: Grant
    Filed: March 2, 2009
    Date of Patent: June 11, 2013
    Assignee: Tennant Company
    Inventor: Michael Stewart Wilmo
  • Filter shaker assembly for sweeping machine
    Patent number: 8256061
    Abstract: A filter shaking assembly for a floor surface maintenance machine including a filter assembly in fluid communication with the debris hopper and having a cylindrical filter held against a shaker plate. The shaker plate is vibrated by a shaker motor at least partially positioned within an interior of the filter and eccentric mass to remove an accumulation of debris from the surface of the filter. The eccentric mass may include two eccentric masses positioned on a common shaft of the shaker motor.
    Type: Grant
    Filed: March 2, 2009
    Date of Patent: September 4, 2012
    Assignee: Tennant Company
    Inventors: Michael Stewart Wilmo, Michael Thomas Basham, Michael Shawn Ardito, Richard W. Wellens
  • Filter Shaker Assembly for Sweeping Machine
    Publication number: 20090217479
    Abstract: A filter shaking assembly for a floor surface maintenance machine including a filter assembly in fluid communication with the debris hopper and having a cylindrical filter held against a shaker plate. The shaker plate is vibrated by a shaker motor at least partially positioned within an interior of the filter and eccentric mass to remove an accumulation of debris from the surface of the filter. The eccentric mass may include two eccentric masses positioned on a common shaft of the shaker motor.
    Type: Application
    Filed: March 2, 2009
    Publication date: September 3, 2009
    Applicant: TENNANT COMPANY
    Inventors: Michael Stewart Wilmo, Michael Thomas Basham, Michael Shawn Ardito, Richard W. Wellens
  • Hopper Assembly with Filter Module for Surface Maintenance Machine
    Publication number: 20090217480
    Abstract: A mobile surface maintenance machine with a debris hopper and a filter module providing at least two filter stages for separating dust and debris within the debris hopper, the filter module including a filter shaking mechanism and a housing adapted to seal against the upper opening of the debris hopper, and wherein the debris hopper is removed from air communication with the exhaust fan when the debris hopper is in a debris dump configuration and is returned to air communication with the exhaust fan when the debris hopper is lowered into an operational configuration.
    Type: Application
    Filed: March 2, 2009
    Publication date: September 3, 2009
    Applicant: TENNANT COMPANY
    Inventor: Michael Stewart Wilmo