Mandrel changing device for a piercing rolling mill
CA 1079097 A · Owner: Wean United · Inventors: Rehag, Klaus; Meurer, Hans
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The disclosure of the present invention concerns a piercing rolling mill with a mandrel changing device which has at least two groove-like recesses which can be positioned alternately in the rolling line in order to hold the mandrels, and a retractable mandrel stripper and, where the mandrel rod carries at its front end a pin on which the mandrel is attached in such a way that it is detachable against the effect of expanding springs or similar means.
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 10, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 10, 1997.
- 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.