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:
Nov. 22, 1988
Filed:
Nov. 04, 1987
Wieland Guhne, Remscheid, DE;
Uwe Kemker, Wuppertal, DE;
Wolfgang Troger, Pulheim, DE;
Hans-Joachim Birr, Wuppertal, DE;
Paul Michel, Ennepetal, DE;
Renate Friedrichs, Wuppertal, DE;
Vorwerk & Co. Interholding GmbH, Wuppertal, DE;
Abstract
The invention is directed to a floor cleaning apparatus which includes a nozzle-like structure for a vacuum cleaner. The apparatus is for vacuum cleaning and polishing hard floors and is moved by the operator in a desired direction. The apparatus includes a chassis defining a longitudinal axis and at least two working plates for working on the surface of the hard floor. The working plates are movably mounted on the chassis so as to perform respective reciprocal movements counter to each other and in a direction ninety degrees to the desired direction in which the apparatus is moved by the operator. The plates conjointly define a total depth extending in the direction of the longitudinal axis of the chassis and work plate takes up one-third of this depth. The other one of the work plates takes up two-thirds of this depth. The work plates have a flat shape and at least one of the work plates is pervious to air. The work plates are sealed at their edges and are mounted on the apparatus by means of elastic bearings.