Abstract: A valve assembly of a pneumatic nailer includes a ring received in the chamber and pin of a seal member extends through the ring and is connected to a trigger of the nailer. The seal member has a rod extending from a bottom thereof so as to engage with a first end of a spring. A second end of the spring is engaged with a locking member which is connected to the chamber. An annular seal extends from a top surface of the seal member so as to contact the bottom of the ring to seal the contact area between the ring the seal member.

Abstract: An exhaust assembly of a sanding device includes a first passage and an extension tube which are respectively defined in a hosing of the casing of the sanding device. The hosing has an inlet and an outlet. The first passage communicates with the outlet and inlet, and the extension tube extends from the hosing. The extension tube is engaged with an annular cover which communicates with the sanding pad and has an exhaust tube. A control valve is rotatably received in the first passage to block or open the outlet or the extension tube. A bag or a vacuum cleaner can be connected to the exhaust tube of the annular cover to collect sanding powder or sanding debris.

Abstract: An air passage shifting device for a pneumatic tool includes a tube connected to a casing in which a rotator is received. A first passage and a second passage are respectively connected in communication between the casing and the tube. An inlet defined radially through the tube and communicates with a passage in the handle of the tool. A control bar is received in the tube and two recesses are respectively defined in an outer periphery of the control bar. The two recesses movably communicate with the first passage and the second passage when pulling or rotating the control bar to guide air into one of the first passage and the second passage to rotate the rotator.

Abstract: An exhaust assembly of a sanding device includes a first passage and an extension tube which are respectively defined in a hosing of the casing of the sanding device. The hosing has an inlet and an outlet. The first passage communicates with the outlet and inlet, and the extension tube extends from the hosing. The extension tube is engaged with an annular cover which communicates with the sanding pad and has an exhaust tube. A control valve is rotatably received in the first passage to block or open the outlet or the extension tube. A bag or a vacuum cleaner can be connected to the exhaust tube of the annular cover to collect sanding powder or sanding debris.