Shears
CA 1059428 A · Owner: Ashlow Steel And Engineering Company Limited · Inventors: Jackson, John C.; Selous, Percy B.G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A shearing device for cutting rod of the type comprising a pair of coplanar discs with projecting blades has the blades mounted in grooves in the discs so that the tips of the blades can be moved into and out of the path of the rod thereby enabling, the discs to rotate continuously and thus avoiding the problem with the known shearing device of accelerating and stopping the discs and ensuring that the blades are moving at precisely the same speed as the rod during the cutting action.
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 July 31, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 31, 1996.
- 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.