System for the control of the quality of a laser cut or perforation, in particular for sheets of metal
CA 2390424 A1 · Owner: Salvagnini Italia S.P.A. · Inventors: D'Angelo, Giuseppe; Bolognese, Luca; Pasquettaz, Giorgio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a system for the control of the quality of a laser cut or perforation comprising means to focus a laser beam onto a cut or perforation zone photodiode sensor means to detect the radiation emitted by the cut or perforation zone, and a control and processing electronic unit to process the signals emitted by said sensor means an optical filter is provided that is associated with said photodiode sensor means to select an optical band around 620 nm. The signal coming from said sensor means is acquired with a frequency comprised between 10 and 60 kHz and filtered with a band-pass filter between 7 and 16 kHz. In this way the control of the quality of the cut or perforation can be carried out on …
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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 June 11, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 11, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 11, 2024.
- 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
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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.