Foldable hay rake
CA 2022588 C · Owner: Rowe, Carroll G. · Inventors: Little, John D.; Rowe, Carroll G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hay rake having a frame assembly, having a front, a back and two sides and supported by wheels for being moved by a vehicle. A first and second set of a plurality of fingerwheel rakes are provided with each set rotatably carried adjacent opposite sides of the frame about a separate axis. Each of the axis are at an angle to vertical and horizontal. A power actuator on the frame rotates the rakes about the axis for rotating the rakes downwardly, outwardly and backwardly for moving the rakes to a rake position and rotates the rakes upwardly inwardly and forwardly to raise the rakes to a transport position.
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 August 2, 1990 and granted October 12, 1993. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 2, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 2, 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.