Patent ID: 6736217
Filing Date: 2004-05-18
Classification: A01B

Abstract:
A rotatable tilling and weeding device for cultivating ground material and extracting weeds, weed roots root vines, the device comprising:(a) a rotatable shaft having an upper end, a middle section, a lower end, and having an axis of rotation extending from its upper end through its middle section to its lower end, the rotatable shaft further including a first hook directly mounted to said middle section, with said shaft upper end including a coupler for coupling the shaft upper end to a source of rotary force and said shaft lower end forming a center pin adapted to penetrate the ground material; (b) a hollow push sleeve slideably mounted on the rotatable shaft and having an upper end and a lower end, with a second hook directly mounted to the hollow push sleeve upper end, and a plurality of connecting rods directly mounted to the hollow push sleeve lower end, the hollow push sleeve positioned above a plurality of cross arms that extend perpendicularly from said center pin; (c) a spring having an upper end directly mounted on the first hook, and a lower end directly mounted to the second hook; (d) a hollow cutting sleeve slideably mounted to the lower end of the rotatable shaft, said hollow cutting sleeve directly mounted to said plurality of rods and positioned below said plurality of cross arms; (e) a plurality of ground tilling tines affixed to the rotatable shaft lower end, said tines extending downwardly from said cross arms and adapted to penetrate the ground material; (f) said source of rotary force causing said shaft to rotate, thereby cultivating the ground material and entwining said weeds or roots, with the hollow cutting sleeve in combination with the hollow push sleeve and the plurality of connecting rods, being adapted to slide along a longitudinal axis of the rotatable shaft and extract entangled weeds or roots.