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:
Dec. 10, 1985
Filed:
Aug. 27, 1984
Applicant:
Inventors:
Lloyd D Fortman, Minneapolis, MN (US);
Mark D Kinter, Spring Park, MN (US);
Assignee:
Tennant-Company, Minneapolis, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
55320 ; 55444 ; 55446 ;
Abstract
This is concerned with a sweeper of the type that has a power operated brush that sweeps debris off of a floor or other surface to be cleaned and throws it into a hopper with a vacuum fan arranged to draw air from the hopper through a filter and exhaust it to the atmosphere. More particularly, the sweeper is provided with a precleaner and/or demister which separates the larger particles, and possibly moisture, from the airstream as it moves through the hopper, thereby protecting and/or aiding the filter.