PNEUMATIC TOOL WITH MUFFLER BYPASS MECHANISM

摘要

A pneumatic tool (10) has a housing (11) with an external surface and defini ng a plurality of cavities therein to hold components of the pneumatic tool. Th e housing defines a motor cavity wherein a pneumatic motor is disposed. Two spaced-apart vents extend from the motor cavity to the external surface of t he housing, and a muffler is mounted adjacent to one vent. A tubular sleeve, which includes a radially extended discharge portion from which exhaust may escape, is mounted on the external surface of the housing and cooperates wit h it to define an annular exhaust passageway. The sleeve is rotatable between muffled and unmuffled positions wherein the discharge portion is respectivel y adjacent to the one vent or the other.