Welcome to these forums! WE need all the help we can get on Rover Ranchers.
My understanding is that this particular version of the friction disc drive is unique to Australian mowers. I did not know AMC copied it. I understand Greenfield invented - and patented - this particular version of the friction disc.
Greenfield sued Rover for infringement. Rover challenged the original Greenfield design in court.
This has become an important precedent case in understanding what legally constitutes 'infringement of copyright'. Rover won.
The case makes for some soporific reading (attached below).
All very litigious. ------------------------------ JACK
