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. 15, 1983
Filed:
Sep. 09, 1980
Applicant:
Inventors:
Paul W Kimzey, St. Louis Park, MN (US);
Sherman B Frederick, New Hope, MN (US);
Assignee:
Tennant Company, Minneapolis, MN (US);
Primary Examiner:
Int. Cl.
CPC ...
E01H / ;
U.S. Cl.
CPC ...
15347 ; 15340 ; 55304 ;
Abstract
Surface maintenance equipment is disclosed including mechanism for moving an airstream therethrough and a filtering device for cleaning the airstream prior to discharge into the atmosphere. The filtering device includes a conventional filter and a screen. The screen removes larger airborne pieces such as grass clippings.