Rock discharge assembly for hay crusher
CA 2126767 C · Owner: Heintzman, Rick · Inventors: Heintzman, Rick
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A spring loaded rock discharge assembly (44) for use with hay mower-conditioner machinery (10) including a plurality of spring fingers (50) supported in an opening (42) between a forage crop cutting mechanism (18) and a conditioning roll (37). The spring fingers (50) are sufficiently resilient so that, when dense objects such as rocks are carried to the conditioning rolls (37) across the opening (42), the objects will cause the spring fingers (50) to deflect and permit the rocks to discharge onto the ground.
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 June 27, 1994 and granted March 25, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 27, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 27, 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.