Patent ID: 7540825
Filing Date: 2009-06-02
Classification: B60K,B60T,B60W,F16H,Y10S,Y10T

Abstract:
1. The drive system of a working vehicle comprising: a main engine drivingly connected to a hydraulic pump that has a variable displacement volume controlled by an actuator, the hydraulic pump being drivingly connected to a hydraulic motor that is drivingly connected to a first wheel engaging the ground, the actuator being connected to a control device that is connected to a sensor configured to sense a position of a speed setting control lever; the control device being configured to adjust the actuator in response to movement of the speed setting control lever, the first wheel being engageably connected to a parking brake that is actuatable by a parking brake actuator; and wherein the control device is connected to the parking brake actuator and is configured to actuate the parking brake if the speed setting control lever is moved toward a neutral position at a rate of change in a control lever position that exceeds a threshold value.