Sidewall guide for combustion grates
CA 2070980 C · Owner: Krieger, Friedrich · Inventors: Krieger, Friedrich
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A furnace having a thrust grate formed of grate bars which are loosely disposed on alternate movable and stationary grate bar supports having freedom of movement to tilt in, a vertical direction. In a horizontal direction a grate bar is fixed on each grate bar support preferably in the middle, and neighboring grate bars are connected to each other the outermost, grate bar on the stationary grate bar support being coupled to a driving element and which upon, thermal expansion, displaces a side shield with respect to the furnace wall.
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 June 10, 1992 and granted July 8, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 10, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 10, 2014.
- 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.