Ultrasonically generated cavitating or interrupted jet
CA 2035702 C · Owner: Vijay, Mohan · Inventors: Vijay, Mohan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is described an improved ultrasonic nozzle including a nozzle body having a fluid flow channel formed axially therethrough with an inlet at an upstream end of the channel for receiving a pressurized fluid and an orifice at the downstream end of the body for discharging the pressurized fluid towards a surface to be eroded, a transformer axially aligned within the flow channel to form in cooperation with, the flow channel, an annulus between the two for the flow of the pressurized fluid, a vibrator for ultrasonically oscillating the transformer to pulse the pressurized fluid prior to its discharge through the orifice. The flow channel and transformer taper conformably axially inwardly …
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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 February 5, 1991 and granted October 1, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 5, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 5, 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.