Interlock mechanisms are safety devices designed to prevent unintended operation of machinery or equipment. They ensure that certain conditions are met before allowing a machine to function, reducing the risk of accidents. For example, in a safety switch, the mechanism may require a door to be closed before the machine can start. These mechanisms are commonly used in various industries, including manufacturing and automotive. They can be found in devices like elevators and industrial machines, where they help protect workers by ensuring that moving parts are not accessible during operation.