ROTARY AIR MOTOR SPEED CONTROL ASSEMBLY

摘要

An air motor speed control comprises an annular speed control housing and an annular stator housing. The speed control housing comprises a cylindrical outer first surface having a first center axis, a cylindrical inner second surface having a second center axis, and a first exhaust slot connecting the first surface to the second surface. The stator housing comprises a cylindrical outer third surface having a third center axis aligned with the second center axis, a cylindrical inner fourth surface having a fourth center axis offset from the third center axis, and a first exit slot connecting the third surface to the fourth surface to overlap the first exhaust slot. The speed control housing is rotatable about the cylindrical outer third surface to adjust overlap between the first exhaust slot and first exit slot.