| CPC B23D 53/12 (2013.01) [B23D 55/065 (2013.01)] | 14 Claims |
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1. A band saw comprising:
a housing;
a motor supported by the housing;
a drive pulley configured to receive torque from the motor, causing the drive pulley to rotate;
a plurality of driven pulleys rotatably coupled to a plate, the plate being coupled to the housing for sliding movement;
a cavity within the housing and located between the drive pulley and the plurality of driven pulleys; and
an endless saw blade wrapped around the drive pulley and the plurality of driven pulleys, the endless saw blade passing through the cavity and configured to be driven by the drive pulley, the saw blade defining an oblong path around the drive pulley and the driven pulleys;
wherein a first of the driven pulleys is rotatable about a first axis oriented perpendicular to the plate, and wherein a second of the driven pulleys is rotatable about a second axis that is obliquely oriented relative to the plate to impart a twisting movement to the saw blade about the oblong path prior to the saw blade passing through the cavity,
wherein the second axis defines a first inclination angle relative to a first normal extending from the plate and within a first common plane as the second axis,
wherein the plurality of driven pulleys includes a third driven pulley rotatable about a third axis that is obliquely oriented relative to the plate, and
wherein the third axis defines a second inclination angle relative to a second normal extending from the plate and within a second common plane as the third axis.
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