Method and apparatus for heat exchange where channels, e.g. tubes, are secured in recesses in heat-isolating boards
CA 2062813 A1 · Owner: Eggemar, Bengt Valdemar · Inventors: Eggemar, Bengt Valdemar
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of heat exchange comprises advancing energy-carrying medium in a channel system comprising channel-part lengths (1) which extend in side-by-side mutually parallel relationship such as, hose parts (1), and substantially sheet-like or slab-like base parts (2) which support the channel parts. The method is mainly characterized by supporting and holding channel parts (1) with the aid of at least one pre-fabricated sheet or slab (2) of heat-insulating material, such as so-called cellular plastic material and, by inserting the channel parts (1) into locking grooves (3 4), included in the slab or sheet, the width of locking grooves when, appropriate, being preferably slightly smaller than …
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 27, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 27, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 27, 2012.
- 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.