Can body making apparatus
CA 2044251 C · Owner: Grims, Conrad M. · Inventors: Hahn, Roger A.; Johansson, Bert E.; Grims, Conrad M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A redraw apparatus (16) is provided for a can body making apparatus wherein the redraw carriage (40) of the redraw apparatus (16) is mounted for substantially friction-free sliding reciprocating movement over a pair of spaced apart support posts (70, 72) which are fixedly mounted on the housing (18) holding the can forming and ironing dies. Also a counterbalancing system (110) is provided for applying a force to counterbalance the weight of a portion of structures used to reciprocate the redraw carriage (40). Additionally a ram assembly (150) is provided for supporting a ram (262) for movement through the redraw apparatus (16) and the can forming and ironing dies wherein a pair of spaced …
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 February 26, 1990 and granted June 1, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 26, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 26, 2012.
- 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.