Suspension for a mowing unit
CA 2267726 C · Owner: Franet, Roger · Inventors: Franet, Roger
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A mower-conditioner includes a header suspended from a mobile main transverse, frame by a pair of lower links a single upper link and a pair of , counterbalance springs. The upper link incorporates a threaded spindle to which a crank is coupled for changing the, effective length of the upper link which extends between respective bearings carried by the, main frame and the header and in this way pivots the header about the horizontal transverse, axis defined by the bearings at the forward ends of the lower links so as to change the, cutting angle of the cutter bar incorporated in the header. The upper link is mounted for, sliding through the bearing carried by the header so as to permit …
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, 1999 and granted August 19, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 15, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 15, 2021.
- 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.