Exhaust muffler for engines
CA 2047110 A1 · Owner: Nakamura, Yukio · Inventors: Nakamura, Yukio; Nakamura, Yukio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to an exhaust muffler for engines mounted on jet-propelled small-sized boats motor, bicycles and other various vehicles. To improve the exhaust muffling effect, engine output performance and engine start performance, the invention provides an arrangement wherein;, the hollow interior of an outer sleeve (23) is divided by a partition cover (26) into two parts an expansion, chamber (A) of relatively large volume on the front side and a resonant chamber (B) of relatively small volume on the rear side, and an exhaust gas lead-in nozzle (35) fixedly fitted to the small-diametered open central region of a front cover (24) defining the expansion chamber (A) is formed …
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 July 19, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 19, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 19, 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.