Device for detecting pin-holes or tears in a foil
CA 2270499 A1 · Owner: Oster, Heinz · Inventors: Zeiter, Patrik; Oster, Heinz
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In order to detect pin-holes or tears in a foil (16) during deformation of , the foil (16), the transmission of light through the foil is measured continuously by means of at least one light, source (22) situated on one side of the foil (16) and at least one of the light sensors (24) on, the other side of the foil (16). The light source (22) is integrated in a shaping-punch (14) and, the light sensors (24) are situated in a die (12) which is employed along with the punch (14). The pin-hole detector (10) enables pin-holes or tears formed during the deformation of the, foil to be detected on-line in a single shaping step closely resembling actual working, practice.
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 April 30, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 30, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 30, 2021.
- 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.