Thermal insulation jacket
CA 2008667 C · Owner: Nelson, Thomas E. · Inventors: Nelson, Thomas E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Thermal Insulation Jacket In one arrangement a water heater construction includes a generally cylindrical inner tank (21) surrounded by a layer of insulation (22). The third component is an outer shell (23) which is configured as a hinged combination of two halves (23a, 23b) or flexible skin (65) which can be opened radially so that the outer shell may be placed around the layer of insulation and inner tank and closed to compress the insulation without requiring any relative axial movement between the outer shell and the inner tank. In an alternate arrangement a thermal insulating jacket (205) includes a flexible outer covering (208) bonded to an alternating series of insulation strips (206 …
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 January 26, 1990 and granted March 1, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 26, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 26, 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.