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:
Aug. 08, 2006
Filed:
Sep. 06, 2002
Gregory J. Engel, Plymouth, MN (US);
Steven L. Boomgaarden, Rosemont, MN (US);
Gregory J. Engel, Plymouth, MN (US);
Steven L. Boomgaarden, Rosemont, MN (US);
Tennant Company, Minneapolis, MN (US);
Abstract
A street sweeper with vacuumized dust control where a rotary broom chamber surrounds a rotary broom. The rotary broom chamber connects by a conveyor housing containing a conveyor mechanism to a hopper having a powered fan and a filter. A vacuum or low pressure is created within the hopper which communicates through the conveyor housing to the rotary broom chamber which creates an airflow therebetween which carries dust or other light debris to a filter which filters out the dust particles or other light debris. The conveyor housing and other components are positionable to accommodate various modes of operation.