Harvesters – Fruit gatherer – Tree shaker
Patent
1988-07-11
1990-01-16
Bui, Thuy M.
Harvesters
Fruit gatherer
Tree shaker
563281, A01D 4600
Patent
active
048934593
ABSTRACT:
A variable force tree shaker is disclosed including a rotatable housing supporting a weight fixed to the housing and a movable weight, with the movable weight being capable of being moved between a balanced position and a plurality of unbalanced positions while the housing is rotating at a shaking speed. Hydraulic fluid is controllably directed into the housing between the fixed and movable weights to move the movable weight while the housing is rotating.
REFERENCES:
patent: 3762139 (1973-10-01), Tompkins
patent: 3771301 (1973-11-01), Favor
patent: 3771768 (1973-11-01), Gebendinger
patent: 3964244 (1976-06-01), Vallecella
patent: 4194347 (1980-03-01), Peters
patent: 4435950 (1984-03-01), Deux et al.
patent: 4776156 (1988-10-01), Brown et al.
American Society of Agricultural Engineers Article, Paper No. 87-1576, by H. A. Affeldt Jr., G. K. Brown, J. B. Gerrish and T. A. Esch, Dec. 1987.
Bui Thuy M.
FMC Corporation
Kamp R. C.
Megley R. B.
Moore A. J.
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