Ground engaging apparatus
CA 2581802 C · Owner: Sulman, Richard · Inventors: Sulman, Richard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A ground engaging apparatus (10) has a support plate (50) pivotally attached to a frame (100); a pair of arms (30, 40) interconnecting the support plate (50) and a shank support (60), which supports a shank (70) and ground follower (90) and first and second biasing rams or springs (200 300), to maintain the , ground follower (90); against the ground (91) but allow controlled break out of a ground opening, or tillage, tool (81) if an obstruction is engaged.
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 September 21, 2005 and granted May 15, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 21, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.