A - Human Necessities – 01 – B
Patent
A - Human Necessities
01
B
A01B 73/02 (2006.01) A01B 73/06 (2006.01)
Patent
CA 2145264
The invention is directed to a foldable agricultural implement frame having a first pair of controlling/controlled lifting hydraulic cylinders for lifting and lowering the right wing section and the center section together in a level condition, and a second pair of controlling/controlled lifting hydraulic cylinders for lifting and lowering the left wing section and the center section together in a level condition. In the first pair of controlling/controlled hydraulic cylinders one of the hydraulic cylinders lifts the right wing section and the other lifts the center section. In the second pair of controlling/controlled hydraulic cylinders one of the hydraulic cylinders lifts the left wing section and the other lifts the center section. A rephasing valve assembly is used to rephase the controlling/controlled hydraulic cylinder pairs when the implement frame is folded and only the center section needs to be lifted and lowered. In rephasing the controlling and controlled hydraulic cylinders, the rephasing valve assembly couples the controlling hydraulic cylinder of the center section to the controlled hydraulic cylinder of the center section.
Cette invention concerne un bâti de matériel agricole repliable comportant une première paire de vérins hydrauliques, l'un de commande et l'autre asservi, servant au relevage et à l'abaissement de l'aile droite et de la section centrale de niveau et une seconde paire de vérins identiques servant à la même fonction du côté gauche du matériel. Un des vérins de la première paire soulève l'aile droite tandis que l'autre soulève la section centrale. Les vérins de la seconde paire fonctionnent exactement de la même façon. Un distributeur de rephasage sert à rephaser les deux paires lorsque les ailes sont repliées que seule la section centrale doit être relevée/abaissée. Au rephasage desdits vérins, le distributeur couple le vérin de commande de la section centrale au vérin asservi de cette même section.
Landphair Donald Keith
Riewerts Paul Reed
Borden Ladner Gervais Llp
Deere & Company
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