Heating system, sequence controller
CA 1259005 A · Owner: Stone Allen Limited · Inventors: George, Martin C.J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention is concerned with the problem of time-lag arising in heating systems using a plurality of boilers which are successively switched in or out according to load requirements and provides, that during times of increasing load when an additional boiler is required, that boiler is initially switched in at a low setting and at the same time a previously switched in boiler is reduced to low setting. This may reduce unnecessary switching in and out particularly when the structure of the previously switched in boiler is not at normal operating temperature at the time when the next boiler is called in.
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 September 5, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 5, 2006.
- 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.