Portable apparatus and method for winterizing of seasonal dwellings
CA 2206447 A1 · Owner: Watson, David Anthony · Inventors: Mcmullen, George Wayne Jr.; Watson, David Anthony
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of winterizing a seasonal dwelling. The method involves replacement of water in a piping system within the dwelling with a winterizing fluid. The water inlet of the piping system of the dwelling is connected to a fluid outlet valve of a portable fluid tank. The portable fluid tank has the fluid outlet valve at a first end and a gas inlet located at a second end opposed to the first end. The portable fluid tank has the gas inlet connected to a valved source of air under pressure. Water outlets are opened within the dwelling and air is passed through the piping system. Subsequently winterizing fluid is added to the fluid tank and then forced into the piping system. The method permits …
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 May 29, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 29, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 29, 2019.
- 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.