Constant float attachment apparatus

Details Constant float attachment apparatus Constant float attachment apparatus

1980-09-11

1982-02-02

Hafer, Robert A.

Harvesters

Motorized harvester

Including motorized vehicle causing transit of harvester

56208, 56DIG9, 56DIG10, A01D 3512, A01D 6700

Patent

active

043132944

ABSTRACT:
Most presently known crop harvesting attachment flotation apparatus use a spring to preload the attachment into a floating mode. A problem with this is that, as the attachment is either forced upwardly or intentionally raised, the effectiveness of the spring decreases. This is avoided by a combination of a spring and a fluid operated cylinder acting through pivotal linkage relationships for retaining the attachment in a substantially constant flotation mode during lifting operations and during flotation operations.

REFERENCES:
patent: Re30056 (1979-07-01), Halls
patent: 3355865 (1967-12-01), Waldrop
patent: 3728851 (1973-04-01), Antwerp
patent: 4099368 (1978-07-01), Mackert et al.

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