Wiper blade for cleaning glass panes, in particular of vehicles

The wiper lever (10) has a driven wiper arm (12) upon which is hinged a wiper blade (16). A cap is provided for covering the connecting section between the wiper blade and wiper arm and may be fitted on the wiper blade. In cross section the cap is approximately U-shape and is made from an elastic plastic, and has elastically deflectable locking means engaging with reciprocal locking means formed on the outer longitudinal edges of a support element (30) for the wiper strip (24). Independent claims are included for a wiper blade and for a wiper arm for the same system.