Apparatus for cleaning tubs which contain liquid under operating conditions and use of the apparatus in a washer chamber
CA 2264114 A1 · Owner: Solke, Sieglinde · Inventors: Martin, Kurt
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device is disclosed for cleaning tubs filled with liquid. A suction device (5) that can be moved by a drive connected to a pressure line (15) is arranged at the bottom (6) of the tub (2). The drive uses a pressurised liquid and drives a water wheel (18) non-positively coupled to rolling means in contact with the bottom of the tub (2). A filtering system is connected to a suction line (14). According to the invention, the suction device (5) has a guiding system (36) for moving it backwards and forwards and a two-way valve (22) for alternately opening a passage (21) or (20) and reversing the direction of rotation of the water wheel (18). Also disclosed is the use of the device in , …
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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
- Filed August 14, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 14, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 14, 2019.
- 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.