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:
Jun. 26, 2001
Filed:
Sep. 30, 1999
Applicant:
Inventor:
Richard F. Wulff, Maple Plain, MN (US);
Assignee:
Tennant Company, Minneapolis, MN (US);
Primary Examiner:
Int. Cl.
CPC ...
A47L 1/1283 ;
U.S. Cl.
CPC ...
A47L 1/1283 ;
Abstract
A cleaning machine employing a vertically shiftable brush and motor assembly, a separate vertically shiftable skirt/splash guard assembly, and a cooperative arrangement between the brush and skirt assemblies causing controlled elevation of the skirt with elevation of the brush. Both the skirt and the brush remain in optimum engagement with a floor surface during operation, but the skirt is elevated cooperatively with elevation of the brush using a lost motion engagement.