Hydraulic apparatus and method for the insertion/extraction of pins on pinned booms of earth moving machines

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EP 1 672 126 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	06.06.2007 Bulletin 2007/23

(43)	Date of publication A2:
	21.06.2006 Bulletin 2006/25

(21)	Application number: 05020075.7

(22)	Date of filing: 15.09.2005

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International Patent Classification (IPC):

E02F 3/36^(2006.01)

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
	Designated Extension States:
	AL BA HR MK YU

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Priority:

14.12.2004 IT PR20040090

(71)	Applicant: PMI Padana Macchine Industriali S.p.A.
	29010 Gossolengo PC (IT)

(72)	Inventor:
	Rossetti, Gabriele 29017 Fiorenzuola d'Arda (Piacenza) (IT)

(74)	Representative: Gotra, Stefano
	BUGNION S.p.A. Largo Michele Novaro, 1/A 43100 Parma 43100 Parma (IT)

(54)	Hydraulic apparatus and method for the insertion/extraction of pins on pinned booms of earth moving machines

(57) A hydraulic apparatus for the insertion/extraction of pins on pinned booms of earth moving machines comprises at least one hydraulic cylinder (4) whose rod (5) is operatively connected with at least one pin (3) to be inserted/extracted in order to associate/disassociate a base boom (1) of the machine with respect to a second boom (2) or accessory boom. Said at least one hydraulic cylinder (4) is applied internally and not in overhang on the pinned base boom (1) or on a part of the machine.

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