Chimney cap apparatus and method
CA 2603924 C · Owner: Arnold, John G. Jr. · Inventors: Arnold, John G. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cap device (60) for a flue opening of a chimney (62) to enhance draw of smoke and to protect from entry of animals debris, and the elements, which , device comprises: a tubular housing (64) having a plurality of planar sidewalls fabricated from flat sheet metal a top (70) attached to said , tubular housing; a plurality of louver openings (66) in a lower portion of said tubular housing to draw air, a plurality of exit openings (68) in the upper portion of said tubular housing above said louver openings (66) said , tubular housing having an imperforated portion between said lower and upper portion; an inner frame and mounting assembly (72) attached to the lower edge of each sidewalls …
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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 May 11, 2006 and granted March 25, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 11, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.