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:
Mar. 12, 2013
Filed:
Oct. 10, 2011
Werner Rentschler, Waiblingen, DE;
Rainer Engelhardt, Leutenbach, DE;
Juergen Frank, Kirchberg, DE;
Daniel Eckstein, Winnenden, DE;
Werner Rentschler, Waiblingen, DE;
Rainer Engelhardt, Leutenbach, DE;
Juergen Frank, Kirchberg, DE;
Daniel Eckstein, Winnenden, DE;
Alfred Kaercher GmbH & Co. KG, Winnenden, DE;
Abstract
A method for cleaning first and second filters of a suction device for cleaning purposes is provided. The suction device has a dirt collection container with a suction inlet. The dirt collection container is subjected to negative pressure via first and second suction lines, respectively, following the first and second filters. First and second closing valves close first and second external air inlets, respectively, into the first and second suction lines. For cleaning the filters, the closing valves are opened, subjecting the filters to external air on the clean space side. The dirt collection container is subjected to negative pressure via the first suction line and first filter by a first suction unit and via the second suction line and second filter by a second suction unit. The suction lines are sealed off relative to each other on the clean space side at least during the cleaning of the filters.