latched application_number US 61751803 A description a skid steer loader 10 is shown in fig1 and it has a frame 12 supported on wheels 14 and further it has a pair of pivoting lift arms 16 that are operated with hydraulic actuators 18 the lift arms support a tilting bucket 15 that is raised with the lift arms and tilted using a tilt hydraulic cylinder or actuator 17 the skid steer loader has a cab 20 as shown and in this instance a door assembly 22 see fig2 is provided on the cab the door can hinge between an open and closed position an engine 24 is used for providing power to a hydraulic system including a hydraulic pump 26 connected to a lockout valve 36 and providing power to a set of actuator hydraulic valves 28 and then to the various hydraulic components such as the lift arm actuator 18 and bucket tilt actuator 17 drive hydraulic motors 30 are used for driving the wheels 14 in a conventional manner a drive interlock system 32 is provided as is disclosed in u s pat no 5 425 431 in greater detail the specification of u s pat no 5 425 431 is incorporated by reference the interlock system 32 has logic controls that among other functions enables or disables the operation of actuator hydraulic valves 28 through a lockout valve 36 and it also can control operation of drive motors 30 or other drive through a drive lockout 31 operation of the lift arm cylinders or actuators.