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. 08, 1986
Filed:
Sep. 12, 1983
Applicant:
Inventor:
Michael L Blehert, Crystal, MN (US);
Assignee:
Tennant Company, Minneapolis, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A47L / ;
U.S. Cl.
CPC ...
15349 ; 15 7 / ; 15 83 ; 15352 ;
Abstract
A walk behind floor maintenance machine is disclosed including a filter and filter housing that may be pivoted away to permit removal of the debris hopper. The filter may be cleaned by vibrating the filter and filter housing. Dust vibrated from the filter slides into the hopper. The hopper may be manually removed for emptying.