Hydraulic control system for a swiveling construction machine

Details Hydraulic control system for a swiveling construction machine Hydraulic control system for a swiveling construction machine

2008-08-13

2011-10-18

Lazo, Thomas E (Department: 3745)

Power plants

Pressure fluid source and motor

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

C037S410000

Reexamination Certificate

active

08037680

ABSTRACT:
A hydraulic control system for a swiveling construction machine includes at least one hydraulic travel motor, a first hydraulic actuation device, a second hydraulic actuation device and a hydraulic diverter valve assembly. The at least one hydraulic travel motor is configured to move the swiveling construction machine in a first travel speed and a second travel speed based on a variable pilot pressure signal. The first hydraulic actuation device is configured to actuate a first function of an implement. The second hydraulic actuation device is configured to actuate a second function of an implement. The hydraulic diverter valve assembly is configured to divert hydraulic power between the first hydraulic actuation device and the second hydraulic actuation device while maintaining operation of the at least one hydraulic travel motor in one of the first and the second speeds.

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Search Report and Written Opinion dated Nov. 17, 2008 for International application No. PCT/US2008/009648.

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