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:
Feb. 16, 2010
Filed:
Mar. 07, 2008
Applicants:
Richard William Wellens, Minneapolis, MN (US);
Michael Thomas Basham, Osseo, MN (US);
Karl Hansen, Cottage Grove, MN (US);
Inventors:
Richard William Wellens, Minneapolis, MN (US);
Michael Thomas Basham, Osseo, MN (US);
Karl Hansen, Cottage Grove, MN (US);
Assignee:
Tennant Company, Minneapolis, MN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D 59/50 (2006.01);
U.S. Cl.
CPC ...
Abstract
A filter system for a surface maintenance machine having a hopper assembly for receiving brush-thrown debris including a cyclonic separator for separating dust and debris from air drawn through the hopper via vacuum action. The cyclonic separator may include multiple cyclone and may be in fluid communication with the hopper assembly so as to periodically receive dust and debris exiting the filter system.