Patent ID: 6488101
Filing Date: 2002-12-03
Classification: A01B

Abstract:
A tiller for cultivating soil, the tiller comprising:a power source; a tilling shaft mounted for undergoing rotation by a driving force supplied from the power source, the tilling shaft having a hollow outer shaft and an inner shaft extending through the outer shaft, the inner shaft having a variable rotating speed and/or direction of rotation relative to the outer shaft; a power transmission mechanism for transmitting a driving force from the power source to the tilling shaft, the power transmission mechanism having a first power transmission system for transmitting a driving force from the power source to the outer shaft and a second power transmission system for transmitting a driving force from the power source to the inner shaft, the second power transmission system having a hydrostatic transmission comprised of a hydraulic pump and a hydraulic motor for varying the rotating speed and/or direction of rotation of the inner shaft; and a plurality of tilling claws disposed on the tilling shaft for tilling soil.