.~ With at least one surface-engaging propulsion element {6}
189
.~.~ Plural elements connected to and spaced along the plural throws of a common crankshaft
DEFINITION
Classification: 180/189
Plural elements connected to and spaced along the plural throws of a common crankshaft:
(under subclass 186) Vehicle including plural propulsion
elements, each attached to one of the cranks of a crankshaft at a point on the element remote from the surface contacting portion.
SEE OR SEARCH CLASS
280, Land Vehicles,
12.11+, for a sled having an occupant-driven propulsion means which propels the sled by making intermittent contact with the sled's supporting surface.