| 摘要 |
An air operated tool characterized in that it is of lightweight strong construction and in that the air motor and surrounding tool housing define therebetween a large size annular exhaust chamber through which air exhausted from the motor passes at low velocity to lateral exhaust passages in the housing thus to provide a tool which operates at low noise level. The tool herein is further characterized in that it has a simplified starting slot arrangement wherein an angularly disposed passage through one stator end plate communicates an inlet chamber of the motor with the starting slot. The tool herein is still further characterized in that the tool housing has two generally radially extending hollow handles by which it is held and manipulated, one handle being secured to the tool housing in either of two angular positions and the other handle containing a manually operated throttle valve and being rotatably adjustable on said housing to position the valve control member to suit the operator's convenience.
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