Mowing machines
CA 1048792 A · Owner: Ransomes Sims And Jefferies Limited · Inventors: Aldred, Edward J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a mowing machine of the kind comprising a frame adapted to be mounted on a tractor three-point linkage and a plurality, of cutting units connected to the frame including at least two, laterally spaced side cutting units and a centre cutting unit positioned so as, in use, to cut the swath between the two swaths cut by the side cutting units, the side cutting units are mounted directly on the frame, so that in use part of the weight of the frame is supported by the side cutting units and the centre, cutting unit is mounted at the rear end of a mounting arm connected to the frame by a universal joint biassing springs, being connected between the frame and the mounting arm to increase the …
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
- Granted February 20, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 20, 1996.
- 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.