Hydraulic drive system
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United States of America Patent
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-
Dec 3, 2002
Grant Date -
N/A
app pub date -
Nov 26, 1999
filing date -
Nov 26, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A hydraulic drive system for a three-wheeled vehicle with drive assemblies including drive units having a single drive unit with two separate directly coupled drives and a pair of transverse drive units employing respectively separate directly coupled drives. There are hydraulic feed lines for parallel operation and for series operation, a secondary hydraulic feedline between the drive units and a secondary hydraulic feed line between the drive units and a hydraulic controller controls diverter valves for parallel and series operation. The hydraulic drive includes a steering system which senses out of line travel.
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