Air conditioning system
CA 1292873 C · Owner: Yamada, Tetsuo · Inventors: Inoue, Yoshinori; Kaneda, Setsuo; Yamada, Tetsuo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An air conditioning system for a building has a first thermal storage tank as a cold thermal source which is installed at a high place in the building and a second, thermal storage tank as a hot thermal source which is installed at a low place in the building. Air conditioners are installed at various heights between the first and second tanks and a heat pipe system of the gravity type connects the air conditioners to the first and second tanks. This system dispenses with passages for water as the thermal medium at the places where the air conditioners are installed. The system makes it possible to lower the capacities of the air conditioning equipment, especially the capacity of the …
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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 December 10, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 10, 2008.
- 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.