Patent ID: 8186608

Claim:
An apparatus for wetting a window pane of a motor vehicle, comprising: an insert body including a bearing head, said insert body connectable to at least one fluid line; a spherical body insertable in said bearing head, said spherical body rotatably and pivotably held in said bearing head in spaced relation to a back wall of said bearing head to define a flow expansion chamber, said spherical body including a nozzle arrangement comprising: a nozzle receiving space extending from a front face of said spherical body transversely through said spherical body and opening into said flow expansion chamber at a back face of said spherical body disposed opposite said front face; a nozzle body including an antechamber and a jet-forming chamber connected to said antechamber, said jet-forming chamber subdivided into a central channel and two lateral arms disposed one on each side of said central channel to generate an oscillating fan jet; an annular shoulder extending around an inner periphery of said bearing head and disposed between an open window opening of said bearing head and said back wall of said bearing head, with a radial spacing present between said bearing head and said spherical body on a side of said annular shoulder facing said back wall; a plurality of resistance projections disposed in said flow expansion chamber of said bearing head, said resistance projections confronting said annular shoulder on a side facing toward said back wall, said resistance projections bearing against said spherical body.