Metal can end for cans whose contents are under inside pressure
CA 1304303 C · Owner: Sauer, Wilhelm Reiner · Inventors: Spruit, Abraham C.; Joge, Hans-Dieter; Sauer, Wilhelm Reiner
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract, Metal can end for cans whose contents are under inside pressure A can end (1) made from sheet metal for cans whose contents are under inside pressure is provided with at least one opening tab (4) partly punched from the end leaving a hinge area (6) and a relative aperture (2) formed by the partial punching with the, opening tab (4) and/or the area of the end surrounding the aperture (2) being cold formed so that the edge area (8) of aperture (2) covers the edge area (4a) of opening tab (4) on the end outside (1a). On the end inside (1b), plastisol (10) is applied in ring-form to the edge areas (4a, 8) of opening tab (4) and of aperture (2) and gelled under heat. Before its …
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
- Granted June 30, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 30, 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.