Patent ID: 7309187
Filing Date: 2007-12-18
Classification: F16D,Y10T

Abstract:
1. A keyless bushing assembly having a longitudinal axis adapted to be disposed in an intermediate space defined between a hub and a shaft for clamping and unclamping the hub and the shaft to and from each other, respectively, the keyless bushing assembly comprising an outer ring and an inner cone: said outer ring comprising first and second tapered inner peripheral surfaces, said first tapered inner peripheral surface having a different taper angle relative to said longitudinal axis from said second tapered inner peripheral surface, an outer cylindrical peripheral surface, and an end which is perpendicular to said longitudinal axis, and said outer ring having an outer-ring back cut between said first and second tapered inner peripheral surfaces, and said outer-ring back cut being set at an angle of between about 3° and about 8° from normal to said longitudinal axis; said inner cone comprising first and second tapered outer peripheral surfaces, said first tapered outer peripheral surface having a different taper angle relative to said longitudinal axis from said second tapered outer peripheral surface, an inner cylindrical peripheral surface, and an end which is perpendicular to said longitudinal axis, and said inner cone having an inner-cone back cut between said first and second tapered outer peripheral surfaces and said inner-cone back cut being set at an angle of between about 3° and about 8° from normal to said longitudinal axis; said first tapered inner peripheral surface having a substantially identical taper angle relative to said longitudinal axis as said first tapered outer peripheral surface, said second tapered inner peripheral surface having a substantially identical taper angle relative to said longitudinal axis as said second tapered outer peripheral surface, said first tapered inner peripheral surface bearing upon said first tapered outer peripheral surface, and said second tapered inner peripheral surface bearing upon said second tapered outer peripheral surface; and a plurality of screws adapted to draw said ring and said cone together to expand said ring and to contract said cone.