Method and device for press-forming sheet metal
CA 1296581 C · Owner: Union Siderurgique Du Nord Et De L'Est De La France, (Usinor) · Inventors: De Smet, Gabriel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for press-forming sheets having a substantially constant thickness on a double action press com-, prising disposing the sheet to be formed on a support (4) applying a first outer slide, or blank holder (1) on the, peripheral portion of the sheet (7) then applying a second, central slide (2) on the central portion of the sheet said, method further comprising forming the peripheral portion of the sheet by allowing it to slide under the blank holder by means of at least one active part (11) of the outer slide so as to compensate, in certain regions of the finished part, for the excess areas, with unchanged thickness of the initial sheet, relative to the volume to be formed 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 March 3, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 3, 2009.
- 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.