Safety device for working vehicle e.g. agricultural tractor, preventing operation of component driven or controlled by vehicle unless driver is seated in driving seat

摘要

The safety device (5) has a sensor device (4) associated with the vehicle driving seat (2), providing a signal when the driver is not seated in the seat, used for inhibiting the function of a component which is driven or controlled by the vehicle via at least one valve incorporated in the hydraulic circuit for driving or controlling the component.