Apparatus for low resistance electric heating of metallic containers
CA 2095546 A1 · Owner: Kilo Alpha Company · Inventors: Froehle, Joan C.; Weidman, Charles Ray
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus for heating a fluid contained in an electrically conductive metal container (26) includes a stepdown transformer (10) having a primary winding (14) coupled to a source of electric energy and a secondary winding (16) that includes the container (26) itself. In a preferred embodiment two semicircular clamps, (18), having articulated jaws carry the current from the transformer (10). Such clamps (18) are made to close around the upper and lower portion of the walls of a cylindrical can (26) completing a , secondary winding (16) in which a very high current flows in the walls of the container (26). The turns ratio of the transformer (10) is sufficient to reduce the voltage in the …
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 November 4, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 4, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 4, 2013.
- 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.