Heating system
CA 1080564 A · Owner: Timmerman, Robert W. · Inventors: Timmerman, Robert W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure A system for utilization of waste heat streams such as from, a power plant, for the heating of buildings or for other uses of heat streams under 200°F. employing preferably a multi-stage heat pump selectively operable to raise the temperature of the building heating system (heated fluid) above the temperature of the waste heat stream (heating fluid). The multi-stage heat pump comprises separate stages each including an evaporator condenser and com-, pressor, and a heat exchanger. The heat pump may be connected either as a counter flow heat pump or a parallel flow heat pump. The control of the system is in at least two different modes dependent upon the demand …
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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 July 1, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 1, 1997.
- 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.