Patent ID: 6155917
Filing Date: 2000-12-05
Classification: B24B

Abstract:
A belt sander for sanding a workpiece with a sanding belt and comprising:housing means;a main roll mounted in said housing means, said main roll defining a roll axis;power operated means for rotating said main roll;a tension roller, around which the sanding belt can be placed, movably mounted on said housing means in a cantilever fashion and relative to said main roll;biassing means operable to urge said tension roller away from said main roll, whereby to apply tension to the sanding belt placed there around; andan extension roll assembly, said extension roll assembly including;a mounting frame, said mounting frame secured to said housing means relative to said main roll;a mounting arm means having a mounting end and a free end, said mounting end mounted to said mounting frame and said mounting arm means extending from said mounting frame in cantilever fashion;bearings mounted on said mounting arm means in spaced relation;an extension roll mounted on said bearing on said mounting arm means whereby said extension roll is located adjacent to the main roll for extending the sanding belt from said main roll substantially parallel to a plane of the work piece and whereby said extension roll extends in a cantilever fashion along an axis substantially parallel to said roll axis of said main roll;a belt control bar extending between said mounting end and said free end of said mounting arm means and located between the extension roll and the main roll for controlling the sanding belt and defining a planar work area for the sanding belt; anda friction reducing means provided to said belt control bar, whereby said free end of said mounting arm means is free for installation or removal of the sanding belt onto or from said extension roll and said main roll.