Patent ID: 7445055

Claim:
A tip valve assembly for a pneumatic tool having a bore housing defined by a cylindrical wall that can operate as an air channel, the tip valve assembly comprising: a first valve member having a bore and defining a valve seat about the bore; a second valve member capable of forming a seal with the valve seat; wherein the second valve member can be tilted from the valve seat to permit air flow through the bore; a stem fixedly coupled to the second valve member and disposed through the bore for tilting the second valve member; an integrated wear surface carried on the first valve member, the integrated wear surface projecting over a portion of the cylindrical wall in the bore housing in conjunction with an edge of the second valve member that can be tilted farthest, whereby the second valve member contacts and moves against the integrated wear surface and is spaced from and does not contact and move against the cylindrical wall of the bore housing wherein the tilting edge of the second valve member in contact with the valve seat is on the opposite side from the wear surface.