Method and apparatus for the production of sized apertures
CA 2001275 A1 · Owner: Amchem Company Limited · Inventors: Baker, George Edward
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus for the production of a plurality of apertures in one or more components such as, fuel injector nozzles of precisely controlled throughput has the apertures produced by EDM. The apparatus comprises an electrode (2), the lateral dimensions of which are less than those of the apertures to be produced and means (9, 11,) for producing relative orbital movement between the electrode (2) and the component during machining of the latter to produce an aperture of the required lateral dimensions. The orbital movement is controlled by signals generated in response to measurement of the flow characteristics of an aperture already machined and comparison of such flow …
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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 October 24, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 24, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 24, 2011.
- 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.