Scraping device
CA 1290110 C · Owner: Simpson, Raymond Andrew · Inventors: Simpson, Raymond Andrew
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention essentially comprises a scraping device for mounting at the end of a rod, said device having a body comprising a plurality of radial extending arms. At the ends of each arm is the scraping surface. The construction of this scraping device is such that when the device is positioned in a flue or like structure debris, and incrustations can be scraped therefrom by a reciprocal movement of the scraping device against the surface to be cleaned.
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 October 8, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 8, 2008.
- 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.