Position and load-controlling device on agricultural machinery, particularly suited for implements hitched to farm tractors
CA 1099196 A · Owner: International Harvester Company · Inventors: Steprath, Werner
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A farm tractor hitch control in which hydraulic fluid under pressure is directed through nozzles to impinge upon a pair of plates, one settable by an operator and one indicating position of or load on the hitch and a valve, moves in response to any imbalance in the nozzle pressures to raise or lower the hitch to bring these pressures into balance.
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 April 14, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 14, 1998.
- 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.