Wastewater heat recovery apparatus
CA 1329587 C · Owner: Mackelvie, Winston R. · Inventors: Mackelvie, Winston R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention automatically reclaims heat from residential wastewater, onsite. The apparatus is simple inexpensive, has no, moving parts and requires no maintenance in its operation. Recovered heat preheats feedwater of the normal hot water tankyear round. Passage of cold wastewater has no adverse effect. Lowers overall energy consumption for short payback period. Provides buffer to energy peak-demand periods. Its design includes: a simple non-pressurized vessel adaptable for thermal storage; positive safeguard against fresh-water contamination.; low in cost; fittable to existing houses, multi-dwelling buildings laundromats, restaurants, hotels, etc.
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 May 17, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 17, 2011.
- 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.