Method of insulating a spa using a flexible insulation blanket
CA 2122463 A1 · Owner: Livingston, David R. · Inventors: Livingston, David R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A portable type spa is insulated by a sequence of steps involving initially the preparation of an insulation blanket having a metal foil heat reflective surface on one side with orthogonal dimensions of the blanket sized larger than the orthogonal dimensions of the spa shell. The spa shell is placed on top of the insulation blanket in a preferred method with the metal foil heat, reflective surface facing the exterior of the spa shell. The spa shell foot well is leveled by shims placed between the bottom of the spa shell and the underlying support surface such as a floor. The periphery of the insulation blanket is preferably sandwiched between the underside of a spa rim and a top edge of …
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 April 28, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 28, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 28, 2016.
- 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.