Arrangement of filter bags in electric vacuum cleaners
CA 1291854 C · Owner: Guhne, Wieland · Inventors: Eckart, Manfred; Ahlf, Heinz-Jurgen; Guhne, Wieland
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to an arrangement of filter bags in electric vacuum cleaners in which the filter bag has a bottom plate which has an insertion opening for a fan-side air-blast socket and at least one side-edge indentation and is arranged in the manner of a transverse wall in a filter-bag chamber which is adjacent a motor-fan housing and can be lifted off from it, and it proposes in, order to obtain a stable development which is favorable for assembly, that a second side-edge indentation lie opposite said first side-edge indentation and that housing-side profections extend into both indentations and protrude to beyond the lower side of the bottom plate.
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted November 12, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 12, 2008.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.