Viewing optics for external-mount electron beam welders
CA 1316993 C · Owner: Ferranti Sciaky, Inc. · Inventors: Ferrario, Joseph D.; Lawrence, Glen S.; Kyselica, Stefan P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to the art of electron beam welding within a vacuum chamber and has specific reference in particular to an optical system for viewing the workpieces to be welded from outside the vacuum chamber, either before or during the welding operation. The apparatus includes an automatic motorized means for adjusting the focus of the viewing system to accommodate different electron beam gun to work distances, and at the same time to automatically adjust the angle with respect to the axis of the electron beam along which the view of the area being welded is to be observed, as well as a rotatable disc for shielding the optical parts of the viewing system from the vapors and …
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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 April 27, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 27, 2010.
- 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.