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:
Apr. 21, 2009
Filed:
Sep. 06, 2002
Applicants:
Michael S. Wilmo, Crystal, MN (US);
Gregory J. Engel, Plymouth, MN (US);
Inventors:
Michael S. Wilmo, Crystal, MN (US);
Gregory J. Engel, Plymouth, MN (US);
Assignee:
Tennant, Minneapolis, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E01H 1/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A street sweeper system is used typically in a motorized vehicle. The sweeper utilizes a cylindrical brush rotating about an axis generally perpendicular to the vehicle's direction of motion. A conveyor belt catches debris thrown forwards and upward by the brush and moves the debris to a hopper. A recirculation flap is mounted contacting a lower rear portion of the brush. The recirculation flap deflects debris that has traveled over the top of the brush back into the brush to be recollected at the conveyor.