Feed device for a material transportation tube
CA 2196475 C · Owner: Epp, Richard J. · Inventors: Epp, Dwayne S.; Epp, Richard J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
24, A feed device for transporting material from a remote location to a feed lower end of a transportation auger comprises a belt carried on a support frame with that support frame being stored in a stored position on top of the main auger tube. The auger tube carries a guide track with a support head movable along the track from a raised position at the top of the track to a lowered position at the bottom of the track. The support head pushes the feed device along the track to a deployed position beyond the lower end of the track at which the support head carries the upper end of the feed device and hold it at a position so that the feed material carried by the feed device is deposited at …
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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 January 31, 1997 and granted July 14, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 31, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 31, 2019.
- 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.