Seed metering shaft rotation indicator
CA 1280320 C · Owner: Gemar, Leroy H. · Inventors: Gemar, Leroy H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An indicator is provided for indicating rotation of a seed metering shaft used with a grain drill. The present invention incorporates a cylinder mounted to the seed metering shaft with its longitudinal axis offset but parallel to the axis of the shaft. The cylinder is mounted to rotate with the shaft. An indicator arm is hingedly mounted to the frame of the grain drill with one end positioned to ride on the outer surface of the cylinder and the other end free to move in correspondence with movement of the first end. With this invention, the indicator arm moves continually with movement of the seed metering shaft and thus provides a continuous indication of rotation of the seed metering …
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 19, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 19, 2008.
- 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.