Posted by Dimebag on June 27, 2008 at 08:23:26:
In Reply to: self locking spur gear design posted by micheael on June 24, 2008 at 15:32:42:
There's a clever design called modified planetary differential. A ratio of 300 on a single stage is normal and it is self locking.
http://www.uprp.pl/patentwebaccess/patentImage.aspx?id=639930&numer=1586679