Time delay apparatus for an exhaust gas recirculation controller
CA 1079142 A · Owner: Chrysler Corporation · Inventors: Sarto, Jorma O.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Time delay valve means are provided in a conduit through which an actuating vacuum signal is supplied to a valve for controlling the recirculation of exhaust gases in an internal combustion engine. The time delay valve means include a pressure responsive vacuum relay valve for opening and closing the conduit in response to an increase in engine intake manifold vacuum to a predetermined level and an orifice for increasing the time required after engine starting for the predetermined level of intake manifold vacuum to be applied to the vacuum relay valve.
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 June 10, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 10, 1997.
- 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.