Rug and upholstery cleaning apparatus
CA 1249906 A · Owner: Grave, Dale L. · Inventors: Grave, Dale L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A rug and upholstery cleaning apparatus comprising a nozzle embodying a pair of chambers separated by a baffle elevated to provide a passage therebelow one, chamber comprising a suction chamber and the other a cleaning chamber having a jet directing a stream of cleaning fluid to the area of said passage and angled to penetrate and sweep through the pile of the material being cleaned to the depth of soil therein, the combined action of suction chamber and pressure of the stream of cleaning fluid causing the pile to tend to become erect and aligned and the, suction in a simultaneous action with the injection of cleaning fluid causes the cleaning fluid to have a sweeping action through the …
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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 February 14, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 14, 2006.
- 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.