Patent ID: 9027579
Filing Date: 2015-05-12
Classification: A47L,B08B

Abstract:
1. Surface cleaning head for cleaning a surface, comprising: a dome-shaped, downwardly open housing, at least one spray arm mounted in said housing for rotation about an axis of rotation, the at least one spray arm bearing a nozzle at a distance from the axis of rotation, said nozzle being adapted to be acted upon with cleaning fluid subject to pressure and to revolve around the axis of rotation together with the spray arm for the purpose of acting on a surface to be cleaned with a stream of fluid, and a protective disk covering the at least one spray arm towards an open underside of the housing and defining a ring-shaped fluid passage for substantially all the stream of fluid to pass through, the protective disc comprising retaining bars extending through said passage and arranged at an uneven spacing in the passage, wherein: