Method and apparatus for heating bottle caps
CA 2193335 C · Owner: Casselman, David S. · Inventors: Casselman, David S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus for heating a plurality of bottle caps simultaneously. The apparatus comprises a housing with an air blower resistance heaters and a thermocouple positioned within its interior. Air blown through the interior is heated by resistance heaters and travels through air ducts positioned at the opposite end of the housing. The air duct is positioned in spaced relation to the interior of a hopper and has a series of apertures through which heated air is injected into the hopper's interior. The flow rate of the air is sufficiently high so that the heated air agitates the caps within the hopper and is evenly distributed throughout the interior of the hopper. The temperature of …
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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 December 18, 1996 and granted August 21, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 18, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 18, 2018.
- 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.