초록 ▼

A plurality of sand fighter rotor units are mounted to a folding frame upon a tractor. Each rotor unit operates in the furrows between rows of crops in an agricultural field. Each rotor unit has a plurality of inboard spiders mounted on an axle between a pair of bearings, and a plurality of outboard

A plurality of sand fighter rotor units are mounted to a folding frame upon a tractor. Each rotor unit operates in the furrows between rows of crops in an agricultural field. Each rotor unit has a plurality of inboard spiders mounted on an axle between a pair of bearings, and a plurality of outboard spiders mounted on short collars attached to the axle outside the pair of bearings. The prongs of the outboard spiders are shorter than the prongs of the inboard spiders. The outboard spiders are adjustable so that they may be placed close to the growing crops without coming into direct contact with the plants. Attaching the rotor units to a frame such that individual sections of the frame may be folded so that the distal wings of the frame when folded are substantially parallel to a center section.

대표청구항 ▼

[ I claim as my invention:] [1.] A structure of a sand fighting implement having,a) a frame having five contiguous sections,i) a center section being an inner most contiguous section,ii) two distal wings, each being an outer most contiguous section, andiii) two medial wings, each being a contiguous

[ I claim as my invention:] [1.] A structure of a sand fighting implement having,a) a frame having five contiguous sections,i) a center section being an inner most contiguous section,ii) two distal wings, each being an outer most contiguous section, andiii) two medial wings, each being a contiguous section between the two distal sections and the center section,b) each contiguous section being connected by a hinge to the section adjacent to it, thereby creatingi) two medial hinges, one each being connected between each medial wing and the center section,ii) two distal hinges, one each being connected between each distal wing and the adjacent medial wing,c) so arranged and constructed that with all the contiguous sections extended their contiguous axis being aligned and normal to a direction of travel,d) two medial hydraulic cylinders, each being adapted to rotate one of the medial wings about the respective medial hinge,e) a first plurality of rotor units attached to the center section,f) a second plurality of rotor units attached to each distal wing,g) each rotor unit having,i) an axle having a peripheral surface extending between each of two legs of a leg pair,ii) a plurality of spiders attached to said axle,iii) each spider having a plurality of prongs, each prong having a wide flat portion,iv) the wide flat portion of each prong approximately parallel to a tangential plane of said peripheral surface of the axle,v) each prong having a bent tip; rein the improvement comprises:h) two distal hydraulic cylinders, each adapted to rotate one of the distal wings about the respective distal hinge,i) each distal wing to medial wing connection having only one axis of rotation being approximately parallel to the direction of travel,j) each medial wing to center section connection having only one axis of rotation being approximately parallel to the direction of travel, such thatk) each medial wing is substantially perpendicular to the center section when rotated, andl) each distal wing is substantially parallel to the center section when rotated, andm) a lower face of the distal wing when the frame sections are extended being an upper face of the distal wing when the frame sections are rotated.