Means for cleaning filters in wet and dry vacuum cleaners
CA 1260212 A · Owner: Ollila, Martti · Inventors: Ollila, Martti
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A means for cleaning the filters in wet and dry vacuum cleaners consisting of at least one motor pro-, vided with a filter, in conjunction with a vacuum cleaner and drawing liquid, dust or equivalent substance into a tank of the vacuum cleaner. In the means of the invention for cleaning purposes a blowing circulation can be produced through the filter, which is opposite in direction to the normal direction in which the air passes through using, the own motor of the vacuum cleaner.
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
- Granted September 26, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 26, 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.