Roll former with side edge control
CA 2176281 C · Owner: Surina, Michael · Inventors: Surina, Michael
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A roll forming apparatus having a plurality of roller die stands, through which a web workpiece is passed for, progressively forming edge flange bends and for subsequently forming side flange bends between the side flanges and the web, and having side flange corner forming upper dies which are mounted on angled spindles and fit, around the edge flanges and enter into the side flange corners, and further having side flange control rolls engaging the outer surface of the side flanges the control, rolls being movably mounted for tilting inwardly or outwardly, so as to produce a greater or lesser degree of bend between the side flanges and the web.
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 May 10, 1996 and granted January 19, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 10, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 10, 2018.
- 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.