Quick change mounted packer system
CA 2107875 C · Owner: Kirsch, Jason Robert · Inventors: Kirsch, Jason Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A new combination farm implement is disclosed. A cultivator is equipped with detachable mounted harrows and detachable packers. When the cultivator is used for direct seeding, narrow openers cut through the earth and seed, transported from an air seeder by pneumatic means is placed, immediately behind the openers. Thereafter a series of packers mounted to the rear of the cultivator, pack the seed. The invention lies in spring tensioned support arms which support the packers or harrows. Through various adjustments these support, arms can generate packing pressures from .5 psi to 3.5 psi depending upon soil conditions. The same implement with the narrow openers and packers removed can be …
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 October 6, 1993 and granted August 20, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 6, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 6, 2015.
- 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.