Vehicle with multiple driven axles
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United States of America Patent
Stats
-
Oct 8, 1991
Grant Date -
N/A
app pub date -
Mar 30, 1990
filing date -
Aug 13, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A vehicle such as a tractor having front and rear drive axles with crown wheel and pinions (10 and 11) driven from a prime mover (E) via an inter-axle differential (12). The rear drive axle has left and right hand brakes (40) and the inter-axle differential has a lock (22, 23, 24) for locking-up the differential. The lock is biased to an engaged condition by a spring (25) and an hydraulic actuator (27). A control system (CS) is provided which is arranged to engage the lock (22, 23, 24) when both rear axle brakes (40) are applied.
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