Patent ID: 6916235

Claim:
A hand-held endless belt abrading machine comprising: a main portion including: an air motor having a rotational shaft extending in a direction transverse to said abrading machine and projecting from one lateral end of said air motor, a drive pulley drivingly connected to a tip end of said output shaft of air motor, a driven pulley positioned forward of and spaced apart from said drive pulley, and an abrading endless belt engaged with and extending between said drive and driven pulleys; and a base portion connected to a rear of said main portion and including: a first air passageway connected to a source of compressed air for supplying compressed air to said main portion so as to drive said air motor, a stop valve adapted to open and close said first air passageway, and a valve controller, which operates said stop valve, provided at a predetermined position on an outer peripheral surface of said base portion; wherein said main portion is pivotable about an axis, which extends in a forward and rearward direction of said abrading machine, between a first operational position where said output shaft of said air motor is extended to the left and a second operational position where said output shaft is extended to the right.