Pliant media blasting method and apparatus
CA 2020333 C · Owner: Lynn, William R. · Inventors: Lynn, William R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method and to a pliant particulate media device for the same which includes an air source for supplying air pressure to a supply container, containing a quantity of pliant blasting media and a discharge line. The container is connected with a mechanical feed device that positively meters out a desired quantity of blasting media into a discharge line which conveys the blasting media to a discharge nozzle where it is discharged against a surface to be treated to achieve the desired treatment. The invention additionally relates to a recovery system for separating the pliant blasting media from the debris and the other unwanted materials and a system for removing …
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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 July 3, 1990 and granted May 29, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 3, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 3, 2012.
- 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.