An electronically controlled pneumatic fastener driving tool. The tool is of the type having a body containing a cylinder with a piston/driver assembly therein, a firing valve actuable to introduce high pressure air into the cylinder to cycle the piston/driver assembly, a manual trigger, a safety trip,...http://www.google.com/patents/US5918788?utm_source=gb-gplus-sharePatent US5918788 - Pneumatic fastener driving tool and an electronic control system therefor
