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1. WO2001017329 - APPAREIL ARATOIRE

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

[ EN ]

THE CLAIMS DEFINING THE INVENTION ARE AS FOLLOWS:

1. Soil cultivating apparatus including a frame supporting at least one rotary cutting assembly having a plurality of earth working implements spaced around a peripheral region of a rotary support member mounted for rotation about a central upright axis of rotation, each said earth working implement being downwardly depending from said support member and having a primary cutting edge extending upwardly and rearwardly from a lower soil engaging extremity thereof, said earth working implements being arranged in separate sets where the primary cutting edge of each said earth working implement of a first said set also extends outwardly relative to a circumferential line traversed by the lower soil engaging extremity of the earth working implements of said first set, and in a second said set of the earth working implements, the primary cutting edge also extends radially inwardly relative to a circumferential line traversed by the lower soil engaging extremity of the earth working implements of said second set, the lower soil engaging extremity of the primary cutting edges of the earth working implements of the second said set being located at a radial distance from the central upright axis greater than the radial distance of the lower soil engaging extremity of the primary cutting edges of the earth working implements of said first set, said central axis of rotation being tilted relative to a forward direction of movement of the soil cultivating apparatus whereby a front region of the rotary support member is always maintained at a level higher than a rear region of the rotary support member.

2. Soil cultivating apparatus according to Claim 1 , wherein a chisel surface extends upwardly and rearwardly from each said primary cutting edge.

3. Soil cultivating apparatus according to Claim 1 or Claim 2, wherein the lower soil engaging extremity of each said earth working implement is a point.

4. Soil cultivating apparatus according to any one of Claims 1 to 3, wherein each said earth working implement includes a support arm extending downwardly from said rotary support member to said primary cutting edge, said support arm being curved when viewed radially presenting a concave side forwardly relatively to the direction of rotation of said rotary support member about said central upright axis.

5. Soil cultivating apparatus according to Claim 4, wherein said support arm includes a secondary cutting edge along at least part of its length, said secondary cutting edge having a surface extending rearwardly and outwardly therefrom when the earth working implement is one of said first set and rearwardly and inwardly when the earth working implement is one of the second set.

6. Soil cultivating apparatus according to Claim 5, wherein the support arm of each said second set of earth working implements is curved when viewed from above so that a concave side thereof faces radially inward.

7. Soil cultivating apparatus according to Claim 5 or Claim 6, wherein the support arm of each said first set of earth working implements is curved when viewed from above so that a concave side thereof faces radially outward.

8. Soil cultivating apparatus according to any one of Claims 1 to 7, wherein the earth working implements of said first and second sets are arranged in adjacent pairs.

9 Soil cultivating apparatus according to Claim 8, wherein there is three earth working implements in each of said first and second sets.

10. Soil cultivating apparatus according to any one of Claims 1 to 9, wherein the rotary support member is arranged to rotate at a speed between 170 and 210 rpm.

11. Soil cultivating apparatus according to any one of Claims 1 to 10, wherein the central upright axis of rotation is tilted from the vertical by 5° to 20°, preferably 8°.

12. Soil cultivating apparatus according to any one of Claims 1 to 11 wherein each earth working implement of said first set is a mirror image of an earth working implement of said second set.

13. Soil cultivating apparatus according to any one of Claims 1 to 12, wherein there is provided at least two said rotary support members transversely spaced relative to one another and arranged to rotate in opposite directions.