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. 07, 1990
Filed:
Dec. 18, 1989
Applicant:
Inventors:
Albert Kohl, Solothurn, CH;
Leon Seilaz, Koppigen, CH;
Assignee:
Henkel Kommanditgesellschaft auf Aktien, Duesseldorf, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
A47L / ;
U.S. Cl.
CPC ...
15320 ; 15328 ; 15339 ; 15353 ; 15385 ;
Abstract
An improved drivable automatic floor cleaning machine includes a carriage supporting a fresh liquid compartment, a dirty liquid compartment, a cleaning rotor, a travel roller pair, and a rearward suction nozzle. The improvements include an adjustable machine frame with a depending protective curtain surrounding the periphery of the rotor remote from the suction nozzle, the machine frame being adjustable, preferably automatically, to accommodate rotors of different diameters, and to confine the cleaning liquid beneath the machine for improved efficiency and range of operation using either battery or rectifier power.