The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 04, 2012
Filed:
Mar. 02, 2009
Michael Stewart Wilmo, Plymouth, MN (US);
Michael Thomas Basham, Maple Grove, MN (US);
Michael Shawn Ardito, Circle Pines, MN (US);
Richard W. Wellens, Minneapolis, MN (US);
Michael Stewart Wilmo, Plymouth, MN (US);
Michael Thomas Basham, Maple Grove, MN (US);
Michael Shawn Ardito, Circle Pines, MN (US);
Richard W. Wellens, Minneapolis, MN (US);
Tennant Company, Minneapolis, MN (US);
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.