Patent ID: 8347975
Filing Date: 2013-01-08
Classification: A01B

Abstract:
1. A cultivator, comprising: an operation rod having a rotating central axle; a handle disposed on one end of the operation rod; a base fixed to another end of the operation rod; the base having non-circle connecting troughs at a circumferential portion thereof; each of the connecting troughs having vertical connecting surfaces therein; a plurality of claw members; each of the plurality of claw members having a vertical connecting block and a claw portion; the connecting block having a non-circle cross-section; the connecting block has a polygon shape and each of the connecting trough has a corresponding polygon shape; the connecting block having vertical mating surfaces on outer sides thereof; the connecting block being inserted in the connecting trough; the mating surfaces being vertically connected to the connecting surfaces and confined by the connecting surfaces; the connecting block being coupled at a predetermined angle; the claw members being disposed in an oblique and curve form; each of the claw members has an arm portion between the connecting block and the claw portion; the connecting block is disposed at one end of the arm portion; and the claw portion is disposed at another end of the arm portion, wherein by connecting the vertical connecting blocks at different positions of the connecting troughs the claws pivoting around the operation rod with various coverage of operations.