Combined heat and power apparatus
CA 2129111 C · Owner: Greenhalgh, Alan · Inventors: Greenhalgh, Alan; Sutton, Jeffrey Alan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A shell steam boiler (2) comprises a furnace tube (10) having an entrance (32) which contains a gas burner (68) and also receives the hot exhaust gases from a small gas turbine (34) giving an output on a , power take off shaft (58) from a power turbine (56) of 0.5 MW, or loss which drives an electrical power generator (60). Hot heating gases from the gas turbine (34) and/or the burner (68) pass down the furnace tube (10) and then through a first group of pass tubes (16) and finally through a second group of pass tubes (22) to an enclosure (26) comprising a flue (30). A driven fan (72) in the enclosure (26) acts to draw the heating gases through the boiler and promotes a good flow of …
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 December 9, 1993 and granted February 6, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 9, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 9, 2015.
- 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.