Land vehicles – Wheeled – Running gear
Reexamination Certificate
2008-12-02
2010-12-07
Fleming, Faye M. (Department: 3616)
Land vehicles
Wheeled
Running gear
Reexamination Certificate
active
07845659
ABSTRACT:
Dump truck tag axle suspension control. A method of controlling a tag axle suspension includes activating a pusher suspension lift switch; and engaging a steer lock on the tag axle suspension, thereby preventing steering of the tag axle suspension, in response to the lift switch activating step. Another method includes activating a switch to thereby begin operation of a hydraulic pump; and engaging a steer lock of the tag axle suspension, in response to the switch activating step. Yet another method includes applying pressure to a bed lift actuator; sensing the pressure applied to the bed lift actuator; and applying pressure to a tag suspension load actuator, thereby transmitting a load from a frame to a tag axle via the load actuator, in response to the sensed pressure applied to the bed lift actuator reaching a predetermined level.
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Chalin Thomas N.
Hudson Herbert D.
Fleming Faye M.
Smith IP Services
Watson & Chalin Manufacturing, Inc.
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