Patent ID: 6644094
Filing Date: 2003-11-11
Classification: G01N

Abstract:
A traction coefficient measurement device comprising driving and driven rollers each having an outer peripheral surface defined by generatrices, a support portion for the respective rollers, a drive shaft, and a driven shaft,the generatrices in at least one of the driving and driven rollers being formed in an arc with a center of curvature to define the outer peripheral surface of the at least one in a convex shape, the support portion for the at least one being adapted to be relatively displaced around a vertical line extending through the center of curvature of one of the generatrices one of the drive shaft and the driven shaft being fixed in position, the other being supported so as to move to and from the one shaft, and a press apparatus being used to force the other shaft to the one shaft for measurement operation, and the other shaft being positioned lower than the one shaft in vertical level, wherein the driving roller has a diameter D10 while the driven roller has a diameter D27, and the other shaft is positioned lower than the one shaft in vertical level by a height difference which is up to 1/2,000 of the smaller one of the diameter D10 and diameter D27.