Tilt cradle breakdown hoist
CA 2121401 C · Owner: Usnr/Kockums Cancar Company · Inventors: Newnes, William Ray
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of breakdown hoist for breaking down a stack of tiered material has an inclined face with upper and lower edges the, stack of tiered material translatable over the inclined face between the upper and lower edges, a supporting frame supporting the inclined face, a rotatable stack receiving cradle for receiving the stack of tiered material from a stack transfer device and rotating the stack of tiered material into slidable engagement with the inclined face, a translatable hoist arm translatable along the inclined face for translating the stack of tiered material between the upper edge and the lower edge in a direction towards the upper edge on the inclined face and, means for …
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 April 15, 1994 and granted December 9, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 15, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 15, 2016.
- 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.