Tree trunk shaker

Details Tree trunk shaker Tree trunk shaker

2005-12-27

2005-12-27

Petravick, Meredith (Department: 3671)

Harvesters

Fruit gatherer

Tree shaker

C056S328100

Reexamination Certificate

active

06978591

ABSTRACT:
A vehicle-carried Tree-Trunk Shaker (TTS) for harvesting tree fruit is configured to prevent the transmission of vibrations from a vibration generator (4) to the TTS and to the vehicle, and for optimal shaking efficiently. Currently, TTSs are allowed to shake multi-directionally and chaotically, convey destructive vibrations to the TTS and to the vehicle, and have low harvesting efficiency. The remedy consists of shaking the trunk only in perpendicular to a pair of jaws (6, 8) clamping the trunk (T), with a unidirectional linear vibration generator vibrating transversally to the trunk. A beam (16) is configured to support the clamping jaws and the vibration generator to form a rigid structure restricted to swivel about a vertical pivot shaft (42) coupled to the vehicle. Thereby there is allowed but a single lateral degree of freedom of motion. Possibly, two vertical pivot shafts (42, 48) are used to that end.

REFERENCES:
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patent: 4903471 (1990-02-01), Bunnelle
patent: 5123238 (1992-06-01), Renehan
patent: 5473875 (1995-12-01), Zehavi et al.
patent: 5595054 (1997-01-01), Reynolds de Sousa et al.
patent: 5927056 (1999-07-01), Renehan

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