Adjustable four-weight shaker head

Details Adjustable four-weight shaker head Adjustable four-weight shaker head

1997-06-05

1999-06-01

Melius, Terry Lee

Crop threshing or separating

Beater

460133, 460145, 563401, A01D 4600, A01D 4626

Patent

active

059083522

ABSTRACT:
The invention provides a harvesting shaker with a set of primary eccentric weights and secondary eccentric weights. The invention rotates the primary and secondary eccentric weights at the same speed, but may on the fly, using a hydraulic rotary actuator, change the rotational phase between the primary and secondary eccentric weights, causing an on the fly change of amplitude of the inventive shaker. The invention also uses a rotary valve, that does not require high pressure bearings, and that provides damping of the control system.

REFERENCES:
patent: 3413789 (1968-12-01), Studer
patent: 4286426 (1981-09-01), Orlando
patent: 4823678 (1989-04-01), Sollami
patent: 4982558 (1991-01-01), Korthuis
patent: 5197269 (1993-03-01), Meester
patent: 5316519 (1994-05-01), Johnson

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