Rotary brush including stationary guide means with slidable bearing means

Claim 1

A rotary brush comprising: a housing having two end walls, a longitudinal sleeve wall therebetween, and a large opening in said sleeve wall extending longitudinally between said end walls; a hollow cylindrical body mounted rotatably in said housing between said end walls thereof and having a cylindrical wall; a plurality of brush units mounted on the outer surface of said cylindrical wall of said cylindrical body, each of said brush units comprising bristles extending radially with regard to said cylindrical body, and appearing through said large opening in said housing sleeve wall; motor means mounted on the outer face of one of said end walls and being coupled to said cylindrical body for imparting rotary movement thereto; paint-supply means connected to the interior of said hollow cylindrical body and adapted for supplying pressurized liquid paint to said interior and to passage means in said cylindrical wall of said cylindrical body, leading from said interior of the latter to between said bristles of said brush units, and being adapted for passing liquid paint on to said bristles; a number of stationary guide rings rigidly mounted inside said housing in transverse zones arranged in spaced relationship to one another and to said end walls of said housing and guidingly surrounding said cylindrical body; and radially slidable bearing means mounted on said stationary guide rings to project outwardly from said large opening of said housing, said radially slidable bearing means being adapted for bearing against a surface to be painted and limiting contact pressure, at points distributed over the length of said cylindrical body of the bristles of the respective brush units which are in contact with said last-mentioned surface.