Mower

Details Mower Mower

1981-07-21

1983-05-24

Hafer, Robert A.

Harvesters

Motorized harvester

Having fluid-pressure or stored-energy motor

56 7, 56DIG11, 91517, A01D 6900

Patent

active

043844430

ABSTRACT:
A mowing machine comprises a plurality of cutting units (4) powered by a parallel hydraulic system with distributing means (30). The cutting units (4) are each powered by a hydromotor (16), all hydromotors (16) being driven by a central hydraulic pump (P). The hydromotors (16) are fed in a parallel relationship by the pump (P). Ahead of the hydromotor (16) in each circuit, is a distributing means (30) with an inlet (26) from the pump (P), and two outlets, (31) back to the supply tank (V), and (33) to the corresponding hydromotor (16). When a hydromotor (16) is deactivated, distributing means (30) automatically diverts the fluid normally flowing through the deactivated hydromotor back to the supply tank (V). This diversion of fluid prevents changing the speed of the remaining hydromotors as a result of increased flow or pressure available due to the deactivated hydromotor.

REFERENCES:
patent: 3918240 (1975-11-01), Haffner et al.
patent: 3992858 (1976-11-01), Hubbard et al.
patent: 4120233 (1978-10-01), Heiser et al.
patent: 4178741 (1979-12-01), Lonn et al.
patent: 4214506 (1980-07-01), Bernhardt

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