Patent ID: 7204402
Filing Date: 2007-04-17
Classification: B25C

Abstract:
1. A fastener driving device comprising: a housing containing a chamber for storing compressed air; a cylinder structure disposed within said housing; a piston movably disposed within said cylinder; a driver connected to said piston; a main valve cooperable with said cylinder structure and movable between an open position and a closed position, wherein said open position allows air pressure to communicate with and drive said piston; a trigger valve operable between a first position and a second position, wherein an air pressure signal passage communicates air pressure between said trigger valve and said main valve, wherein when said trigger valve is in said first position said main valve is closed and when said trigger valve is in said second position said main valve is open, wherein said cylinder structure and said signal passage are a one-piece, integrally formed structure such that said signal passage forms a conduit between said trigger valve and said main valve and a peripheral seal structure surrounding an upper portion of said cylinder structure and an upper portion of said signal passage facilitate air pressure communication of said upper portions.