US Patent 7089080 Pulse tool controller

This is a system for monitoring and controlling a compressed air driven, pulse tool. The system includes a means for measuring air pressure supplied to a pneumatic pulse tool and converting the air pressure into an electrical signal representative of the air pressure; a programmed microprocessor configured to identify a portion of the signal representative of the air pressure; and a means for controlling the flow of air to the tool. The programmed microprocessor is configured to identify and store timers to be associated with the signal representing the air pressure. The microprocessor is configured to report an acceptable condition if all of the timers are satisfied and the air flow to the tool has been shut-off by the microprocessor. The system is external to the tool.