Patent ID: 8032970
Filing Date: 2011-10-11
Classification: A46B

Abstract:
1. A bolt brush comprising: a cylindrical housing having an end extended with a connection part, an interior of said housing being provided with a holding space having an opening, an inner wall of said housing being provided with a longitudinal T-shaped rib consisting of a radially inwardly projecting rib and an integral surface oriented tangential and parallel and spaced from a tangent of the interior surface of the housing, said cylindrical housing having an inner walls provided with a ring groove close to said opening; a cylindrical scraper having a longitudinal slit engageable with said longitudinal T-shaped rib of said cylindrical housing thereby preventing said scraper from moving radially and laterally, said cylindrical scraper having a plurality of brush hair having contact ends far away from said scraper, and a retainer ring fitted in said ring groove of said cylindrical housing for restricting position of said scraper, said retainer ring being provided with an opening and two pick-up members formed close to said opening.