Compact extractor
CA 2055366 C · Owner: Yonkers, Robert A. · Inventors: Yonkers, Robert A.; Mcdowell, David E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is a surface cleaning liquid extractor for vacuum cleaning a surface. The extractor has an open top recovery tank, a housing which seats upon the recovery tank and a convenient carrying handle which latches the housing and the recovery tank together. The extractor also has a floating splash damper positioned within the recovery tank for floating upon the surface of liquid collected in the tank to minimize splashing of the liquid. The top surface of the floating splash damper includes a domed portion for engaging the suction opening of the extractor and sealing off the suction from the recovery tank when the recovery tank has filled with liquid.
Read the whole patent
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 November 13, 1991 and granted November 22, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 13, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 13, 2013.
- 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.