Below is a list of excerpts from Claas patents relating to the subject of "choppers".
Note: The decisive factor for a patent is always the "claims", as specifically what exactly the applicant claims as his invention!
In this application, the knife attachment of the new "V-Flex" cutting cylinder is claimed:
This application describes the principle of the "RU" corn header:
https://worldwide.espacenet.com/patent/search/family/006533558/publication/DE19535453A1?q=DE19535453
This registration concerns the successor model of the "RU", the "Orbis":
Here is an application for a modular frame extension to accommodate a rowtrack:
https://worldwide.espacenet.com/patent/search/family/062486474/publication/EP3449714A1?q=EP3449714
In combination with the row-trac, this application is about being able to remove a "conditioning element" (the corn-cracker) above the tracs sidewards out of the machine:
https://worldwide.espacenet.com/patent/search/family/062486498/publication/CN109417901A?q=EP3449713
Below is the registration of a forage harvester that can rotate its driver's cab by 180° for road travel:
A registration regarding yield and moisture measurement during ongoing chopping operation: