(under subclass 21) Subject matter wherein the stepless ratio change is effected by a drive train* which includes toothless gearing that transmits force by frictional contact.
SEE OR SEARCH THIS CLASS, SUBCLASS:
114+, for fluid control of planetary friction gearing.
185+, for planetary friction gearing, per se.
214+, for nonplanetary variable speed or direction friction gearing combined with a planetary transmission.
SEE OR SEARCH CLASS
476, Friction Gear Transmission Systems or Components, for variable speed nonplanetary friction gearing, per se. [figure]
