Exhaust gas purifying system having a diaphragm type control valve
CA 1061720 A · Owner: Nippondenso Co. Ltd. · Inventors: Ito, Mikiji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a system comprising a diaphragm type control valve, a plurality of orifices and a thermo sensitive valve, the valve opening or closing period of the diaphragm type control valve is changed longer or shorter by changing one of said orifice to another by the thermo sensitive valve in response to temperature relative to the engine operating condition whereby exhaust gas purification is well attained with complete prevention of afterburn.
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 September 4, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 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.