US PATENT SUBCLASS 172 / 352
.~.~ With stepper propulsion means

Current as of: June, 1999
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172 /   HD   EARTH WORKING

329  DF  GUIDED BY WALKING ATTENDANT; SUPPORTED, PROPELLED, OR HELD IN POSITION BY ATTENDANT {7}
351  DF  .~ Guided or propelled by walking attendant and with ground support or draft means {11}
352.~.~ With stepper propulsion means

DEFINITION

Classification: 172/352

(under subclass 351) Apparatus in which the apparatus is propelled by means of a member operated by the attendant which reacts with the ground to move the apparatus a given distance and the member is then reset to repeat the operation.

(1) Note. Search Class 180, Motor Vehicles, subclasses 4 and 8 for stepper propulsion means for vehicles.

SEE OR SEARCH CLASS

305, Wheel Substitutes for Land Vehicles,

1+, for devices comprising ground-engaging feet operating by a step-by-step movement in the travel of the vehicle.