Diaphragmed air valve system
CA 2423490 A1 · Owner: Wijaya, Heru Prasanta · Inventors: Wijaya, Heru Prasanta
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A diaphragmed air valve system for automotive engines which is designed for the purpose of keeping intact the shape as well as mass of an air body before and after entering the engine. This diaphragmed air valve system comprises a cylindrical air inlet (2a) and a valve opening (2b) constituted by a number of small plates of specific type and arrangement (2c). The small plates with , their specific type and aerodynamic arrangement cause the formation of a , number of openings in the centre of the air inlet when the valve is opened. The rate of air flowing into the engine is absolutely dictated by the diameter of the valve opening formed by the specific arrangement and type of the small …
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 August 8, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 8, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 8, 2022.
- 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.