Patent ID: 6241420
Filing Date: 2001-06-05
Classification: E01C

Abstract:
A fluid control system (50) in a work machine (10) having first and second compacting drums (14,16) rotatably mounted on a main frame (18), said main frame (18) supporting an engine (20) and a pump (22) connected thereto, said first and second compacting drums (14,16) including first and second vibratory mechanisms (36,38) respectively, said fluid control system (50) comprising;a first hydraulic motor (42) connected to the pump (22) and operatively connected to the first vibratory mechanism (36);a second hydraulic motor (44) connected in series with said first hydraulic motor (42) and operatively connected with the second vibratory mechanism (38);a fluid control valve (60) being interposed to the pump (22) and said first hydraulic motor (42);a bypass valve (74) being connected to said first and second hydraulic motors (42,44); anda sequencing device (80) responsive to actuation of said fluid control valve (60) and connected to said bypass valve (74), said sequencing device (80) controlling actuation of said second hydraulic motor (44).