Harvesters – Fruit gatherer
Patent
1997-09-15
1999-12-28
Shackelford, H.
Harvesters
Fruit gatherer
56330, A01D 4600
Patent
active
060065079
ABSTRACT:
A coupling assembly is provided which allows for a dual pressure release during impaction of an obstruction during insertion of a picking arm into a canopy of a fruit tree. A first yielding occurs when a predetermined first level of resistance is encountered. If the obstruction is cleared and the resistance pressure falls below the first level of resistance the picking arm is returned to the normal deployed position. If the resistance level continues to climb and exceeds a predetermined second level of resistance the coupling assembly releases the arm to reduce the resistance pressure previously obtained while preventing any further resistance pressure from being generated. This acts to significantly reduce the opportunity that damage will occur to either the machinery or to the fruit tree. The possibility of multiple picking members is explained.
REFERENCES:
patent: 3421304 (1969-01-01), Phillips, Jr.
patent: 3636688 (1972-01-01), Fontan et al.
patent: 3822537 (1974-07-01), Sell
patent: 4163356 (1979-08-01), Robbins et al.
patent: 4236371 (1980-12-01), Claxton
patent: 4377064 (1983-03-01), Peterson
patent: 5421146 (1995-06-01), Visser
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