Abstract: A windshield wiper blade superstructure is provided with one or more fin like depending projections. Slots are provided in the backing strip positioned to receive a corresponding depending projection to limit longitudinal displacement of the refill unit relative to the backing strip. The depending projections may be inclined on an edge to readily receive the refill unit.

Abstract: A windshield wiper arm includes a free end which is U-shaped in cross section to form depending ears. The ears include slots open at the free end and detents adjacent the rear edges. The depending ears are received in an opening of the web of the central portion of a channel shaped blade and straddle a flat leaf spring. The open ended slots engage a cross pin extending through the webs of the blade and the detents engage the underside of the flat leaf spring to limit angular displacement of the blade relative to the arm. A pair of shoulders formed on the inner surfaces of the side walls of the blades engage the rear edge of the depending ears to restrict longitudinal movement of the arm relative to the blade.

Abstract: An articulated windshield wiper blade superstructure for distributing applied pressure proportionately along the length of a wiper blade which includes a central primary lever and a pair of secondary end levers arranged end to end. The end levers are pivotally connected to the central levers. A single flat spring extends from end to end through the central lever. At each end it engages a projection on the end levers which extends inwardly of the pivotal connection. The spring functions to distribute the arm pressure to the end levers and also functions as a latch to retain the blade on the arm.

Abstract: An articulated windshield wiper blade superstructure for distributing applied pressure proportionately along the length of a wiper blade which includes a central primary lever and a pair of secondary end levers arranged end to end. The end levers are pivotally connected to the central levers. A single flat spring extends from end to end through the central lever. At each end it engages a projection on the end levers which extends inwardly of the pivotal connection. The spring functions to distribute the arm pressure to the end levers and also functions as a latch to retain the blade on the arm.