Cutting height gauge
CA 2024097 C · Owner: Lokken, Ernest C. · Inventors: Lokken, Ernest C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed herein is a device for indicating the height of a moveable platform with cutting bar of a harvesting machine above the terrain over which it passes in carrying out its function. The indicating device is mounted on a fixed operators cab or the frame of the harvester and includes a scale with indicia. Attached by a cable to the moveable platform is one end of an indicating rod slideably received and spring biased within the body of the device so that upon movement of the platform relative to the cab or frame the free end of the rod gives a reading on the indicia. In a further embodiment to be used on a different type of harvester the attaching cable is encased in a sheath to enable …
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 28, 1990 and granted October 5, 1993. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 28, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 28, 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.