Inducer for condensing furnace
CA 2125091 C · Owner: Chou, Rudy S. · Inventors: Ramshankar, Rengasamy; Rieke, Larry D.; Chou, Rudy S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An inducer for causing a flow of combustion air into and gases of combustion through and out of a furnace of the condensing type. The inducer is intended for use without, modification of its design or size in a series of furnaces, of the same basic design but having different heating capacities and therefore different requirements for flow through the induction flow path. The furnace design is such that a given furnace is capable of operation so as to provide a flow of air to be heated that is either up down, or horizontal with only minor field modification on installation. The inducer has two discharges only one of, which is used in a given installation. The other discharge is blocked with …
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 3, 1994 and granted August 18, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 3, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 3, 2016.
- 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.