Vibrating tongs with an adaptable clamping force for fruit...

Details Vibrating tongs with an adaptable clamping force for fruit... Vibrating tongs with an adaptable clamping force for fruit...

2007-07-11

2010-10-12

Will, Thomas B (Department: 3671)

Harvesters

Fruit gatherer

Tree shaker

Reexamination Certificate

active

07810306

ABSTRACT:
The invention relates to vibrating tongs, including two opposing jaws in which the closing or opening movements are achieved through one or several hydraulic jacks, referred to as clamping jacks. These tongs are especially remarkable in that the oil intake chamber or pressure chamber of the clamping jacks that control the closing motion of the jaw or jaws, is linked to a mechanism fitted to detect any pressure rise inside the chamber that occurs when the tong jaws come into contact with the trunk of a tree. Blocking devices are controlled by the detection mechanism, and any increase in the pressure of the jaws on the trunk is opposed as soon as such a pressure rise occurs in the oil intake chamber.

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patent: 6644906 (2003-11-01), Bayne
patent: 2799610 (2001-04-01), None

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