Patent ID: 7311029
Filing Date: 2007-12-25
Classification: B23D,Y10T

Abstract:
1. A quick-pin blade tensioning device for a band saw including an upper band wheel mounted via an upper arm, the upper band wheel engaging a band saw blade, comprising: a sliding tension bracket for engaging the upper band wheel and the upper arm of the band saw; a lifting shoe having a bottom surface and coupled with the sliding tension bracket, the lifting shoe configured and dimensioned to be received within the upper arm of the band saw and to slide the sliding tension bracket within the upper arm of the band saw; a pin for contacting the bottom surface of the lifting shoe for moving the lifting shoe within the upper arm of the band saw; a rotatable tension crank having an axis of rotation, a first end and a second end, the first end coupled with the pin such that the pin rotates with the tension crank, at least a portion of the pin extending axially outwardly from the tension crank, the tension crank configured and dimensioned to be received within the upper arm of the band saw, wherein the pin is spaced from the axis of rotation, and wherein there is no structure adjacent the pin that is both mounted to the tension crank for movement therewith and capable of drivingly contacting the lifting shoe; a tension handle having a first position and a second position, the tension handle coupled with the second end of the tension crank, wherein the tension handle rotates the tension crank causing the pin to revolve about the axis of rotation of the tension crank when the tension handle is moved, and wherein the tension handle, when moved from the first position to the second position, causes the pin to revolve to a position where the pin contacts and moves the lifting shoe for applying tension to the band saw blade.