Flow divider system and valve device of the same

Details Flow divider system and valve device of the same Flow divider system and valve device of the same

2006-04-25

2006-04-25

Lazo, Thomas E. (Department: 3745)

Power plants

Pressure fluid source and motor

Having condition responsive control in a system of distinct...

C091S515000, C414S700000

Reexamination Certificate

active

07032378

ABSTRACT:
There is provided a flow divider system in a hydraulic circuit for a work machine including a boom cylinder and a bucket cylinder. The flow divider system divides a pressured oil drained from a one-boom cylinder into an other-bucket cylinder and a tank via a first orifice, a second orifice and a flow dividing valve, maintaining a specified pressure difference between pressures downstream the first and second orifices. The first and second orifice are configured of a variable orifice respectively, and in the event that the oil flow from the one-boom chamber decreases, respective opening degrees of the first and second orifices are controlled so as to be reduced. Accordingly, changing of a divisional ratio of oil flow can be suppressed properly regardless of a small oil flow drained from the boom cylinder.

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patent: 02-096028 (1990-04-01), None
patent: 07-252857 (1995-10-01), None

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