Hydraulic drive arrangement for the cutter of a pull-type...

Details Hydraulic drive arrangement for the cutter of a pull-type... Hydraulic drive arrangement for the cutter of a pull-type...

2007-12-11

2007-12-11

Kovács, Árpád Fábián (Department: 3671)

Land vehicles

Wheeled

Articulated vehicle

C172S449000, C056S218000

Reexamination Certificate

active

11362535

ABSTRACT:
A pull-type crop harvesting machine has disk cutter carried on a frame mounted on ground wheels with a hitch arm extending from the frame over the header to a hitch connector of a tractor. The hitch arm is mounted for pivotal movement about a generally upright axis such that in a first position the tractor tows the frame in echelon to one side and in a second position the tractor tows the frame in echelon. The disks are hydraulically driven by a pump at the front end of the hitch arm and a motor at the frame with the hydraulic circuit including a sump tank defined by a hollow interior of the hitch arm and a cooling radiator defined by a tubular frame member which is preferably located at the disk drive as a support therefore as it is cooled by the air flow from the disks and contact with the crop and carries a low volume of fluid.

REFERENCES:
patent: 4838358 (1989-06-01), Freudendahl
patent: 5099937 (1992-03-01), McLean
patent: 5152357 (1992-10-01), McLean et al.
patent: 5186271 (1993-02-01), McLean
patent: 5531283 (1996-07-01), Austin et al.
patent: 5706901 (1998-01-01), Walters et al.
patent: 6625964 (2003-09-01), McLeod et al.
patent: 7055618 (2006-06-01), Ehrhart et al.

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