Hybrid machine with hydraulic drive device

Details Hybrid machine with hydraulic drive device Hybrid machine with hydraulic drive device

2005-11-08

2005-11-08

Lazo, Thomas E. (Department: 3745)

Power plants

Pressure fluid source and motor

With control means for structure storing work driving energy

C060S484000, C060S486000

Reexamination Certificate

active

06962050

ABSTRACT:
A hybrid machine with a hydraulic drive device having hydraulic actuators allowed to operate against and by external loads is provided. To this end, the hybrid machine comprises hydraulic cylinders (7), first hydraulic pumps (P1) connected, with closed circuits, to head side pressure receiving chambers (7S) and bottom side pressure receiving chambers (7L) of the hydraulic cylinders (7), and second hydraulic pumps (P2) connected, with open circuits, to the bottom side pressure receiving chambers (7L) and an external oil chamber (10), wherein the first and second hydraulic pumps (P1, P2) are connected to electric motors (M) so as to be driven.

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EPO Search Report mailed Nov. 3, 2004.

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