Patent ID: 8192253
Filing Date: 2012-06-05
Classification: B24B

Abstract:
1. A finishing apparatus that imparts hairlines extending continuously along a plane surface and a curved surface of a sheet metal, the apparatus comprising: a closed belt of sandpaper; rotatable rollers having a relative orientation that defines a closed and curved path and being configured to facilitate rotational movement of the sandpaper along the closed and curved path; a holder unit, arranged between at least two of the rotatable rollers, to engage the sheet metal and to facilitate contact between a surface of the sheet metal and an opposing surface of the sandpaper; and a pressure inducing unit, arranged between the holder unit and the rotatable rollers adjacent the holder unit, to exert a force against the sandpaper that is directed from an interior to an exterior of the closed and curved path that is defined by the rotatable rollers, wherein the pressure inducing unit comprises: