Patent ID: 7503473
Filing Date: 2009-03-17
Classification: B25C

Abstract:
1. A pneumatic fastener, comprising: a housing; a handle coupled to the housing, the handle defining an inlet channel for delivering compressed gas to the housing; a trigger valve in communication with the inlet channel and configured to actuate the pneumatic fastener; a fastener driving assembly disposed within the housing, the fastener driving assembly including a cylinder and a piston that reciprocates within the cylinder to drive a fastener; a valve piston coupled to the fastener driving assembly, wherein actuation of the valve piston causes compressed air to drive the piston within the cylinder to drive the fastener; an outer cap coupled to the housing; and an inner cap disposed at least partially within the outer cap, the inner cap including an opening in communication with the trigger valve for porting the compressed air to a region above the valve piston, wherein the opening also ports the compressed air from the region above the valve piston to the trigger valve upon actuation of the trigger valve.