Patent ID: 9167738
Filing Date: 2015-10-27
Classification: A01B

Abstract:
1. A rotary cultivating device comprising: a rotary base, at least one long blade, the long blade having a non-cultivating edge disposed adjacent the rotary base, and a cultivating edge projecting away from the rotary base, the long blade comprising: (a) a long blade base segment, the long blade base segment being attached to the rotary base so that the long blade base segment is effectively rigid and non-elastic, (b) an elastic long blade mid segment, the long blade mid segment being attached to the long blade base segment, the long blade mid segment extending to a periphery of the rotary base, and (c) an elastic long blade extended segment, the long blade extended segment being attached to an end of the long blade mid segment, the long blade extended segment extending beyond the periphery of the rotary base, at least one short blade, the short blade comprising an effectively rigid base segment and an elastic semi-rigid short blade extended segment: wherein as the rotary base rotates the long blade, the long blade cultivating edge penetrates and cultivates a soil surface so that when the long blade extended segment contacts a fixed object projecting from the soil surface, the long blade extended segment elastically deforms, thereby limiting an amount of force imparted from the long blade extended segment to the object.