Patent ID: 8181303
Filing Date: 2012-05-22
Classification: A46B,B60S

Abstract:
1. A rotary car wash brush comprising: an elongate, substantially cylindrical hub having an outer circumferential surface and at least one longitudinally extending keyway formed in said surface; and a plurality of longitudinally stacked, prefabricated annular brush cartridges each having a central aperture and disposed on the hub and having a key fit into said keyway to prevent relative rotation between the hub and cartridge but to allow longitudinal sliding motion of the cartridges along said hub for purposes of installation, each brush cartridge including alternatingly stacked layers of flexible brush elements and annular spacers, each element being made of a flexible sheet material and defining a plurality of circumferentially spaced, radially extending fingers joined together at their inner ends and adhesively bonded to the interleaved spacers, each spacer having a central opening and at least one radially inwardly projecting key to fit into said keyway; whereby each cartridge is a unitary assembly adapted to be individually slidingly mounted on said hub.