Method and apparatus for perforating material using laser beam
CA 1188748 A · Owner: American Brands, Inc. · Inventors: Bennett, William T.; Parks, Bennie L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for perforating material comprising the steps of advancing material along a path of travel passing, the advancing material over a movable laser mask having an aperture such that the material drives the mask in unison with the movement of the material, and directing at least one laser beam through the corresponding aperture so as to vaporize the material juxtaposed the mask aperture to correspondingly form an opening in the material. The apparatus contemplated for perforating the material as it is advanced along a path of movement comprises guide rolls and unwinding and rewinding apparatus for advancing the material along the path of movement, a rotatable hollow mask member having …
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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
- Granted June 11, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 11, 2002.
- 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.