Stone trap for combine harvesters
CA 1211020 A · Owner: Sperry Corporation · Inventors: Deleu, Walter V.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A combine harvester including a crop elevator a threshing, mechanism to which in use the crop elevator feeds crop material and, a removable stone trap located between the crop elevator and the threshing mechanism and having an inlet disposed generally at the transition between the crop elevator and the threshing mechanism is disclosed wherein the stone trap is supported in the operative position by a first releasable pivot and is retained in the operative position by a latch, the arrangement being such that on release of the latch the stone trap pivots forwardly of the machine about the first pivot while still being supported by the first pivot, the latter being disengaged on final removal …
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 September 9, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 9, 2003.
- 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.