Patent ID: 7192100
Filing Date: 2007-03-20
Classification: B60K,B60W,B60Y,E02F,F16H

Abstract:
1. A power machine having a drive system, a speed range selector coupled to the drive system and adapted to selectively operate the power machine in at least high and low speed ranges, the low speed range operating between a first initial speed and a low maximum speed, and the high speed range operating between a second initial speed and a higher maximum speed than the low speed range, a drive control operably coupled to the drive system and configured to be manipulated by a user to cause the drive system to move the power machine and a traction lock adapted to stop the drive system from moving the power machine, the power machine comprising: a brake control circuit receiving a brake input and providing a brake output adapted to activate the traction lock, wherein the brake control circuit is independent of the drive control; and a controller operably coupled to the brake control circuit to receive the brake output, and adapted to provide a controller output signal to the traction lock and the speed range selector in response to the brake output; wherein the controller output signal is provided when the power machine is operating in a speed range that is not the low speed range and includes operating the speed range selector to select the low speed range and activating the traction lock.