Patent ID: 6637974
Filing Date: 2003-10-28
Classification: E04F

Abstract:
A roller wall guard configured for attachment to a surface finishing machine, said surface-finishing machine for finishing a generally horizontal surface which adjoins a second surface, said surface-finishing machine having a circular guard ring of a given circumference, wherein said roller wall guard comprises:an arm having a first end extending along a length to a second end, said arm configured to pivotally attach to said surface-finishing machine at an intermediate point along said arm between said first and second ends through a pivotal attachment device, said first and second ends each being configured to rotatably hold a roller; and a pair of rollers, each roller having a diameter and rotatably attached to an end of said arm in an orientation adapted for rolling engagement against said second surface; wherein the length of said arm and the diameter of said rollers are configured so as to define a line between a point of rolling engagement of said first roller against said second surface and a point of rolling engagement of said second roller against said second surface, said line lying outside of said circumference of said guard ring; whereby when one of said rollers engages said second surface said arm will pivot about said pivotal attachment device and the other roller will also come into engagement with said second surface.