Submersible body warmer apparatus
CA 1067366 A · Owner: Suzuki, Katumi · Inventors: Suzuki, Katumi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A submersible body warmer apparatus comprising a heat radiating casing body formed to retain a fuel and to define a combustion chamber for combusting the fuel and a heated air passage communicated with the combustion chamber an exhaust, opening also defined in the heat radiating casing body to communicate the heated air passage with the outside of the heat radiating casing body, check valve disposed in the exhaust opening to close and open the latter when a water pressure is exerted on the check valve and when an inner air pressure in the heated air passage overcomes the water pressure and air supply, means for supplying air into the combustion chamber.
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 December 4, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 4, 1996.
- 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.