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Self-aligning anti-lift device for windshield wipers

  • US 5,170,527 A
  • Filed: 02/10/1992
  • Issued: 12/15/1992
  • Est. Priority Date: 02/10/1992
  • Status: Expired due to Fees
First Claim
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1. An anti-lift device for a windshield wiper subjected to an oncoming airstream passing across a windshield as the windshield wiper sweeps the windshield through a predetermined arc of movement along directions transverse to the direction of the oncoming airstream, the anti-lift device comprising:

  • a base frame for placement on the windshield wiper for movement with the windshield wiper through the predetermined arc of movement, the base frame having opposite ends and extending longitudinally between the opposite ends;

    a plurality of deflector members on the base frame and spaced longitudinally along the base frame;

    each deflector member including at least one deflector element and at least one director element; and

    mounting means mounting each deflector member upon the base frame for pivotal movement about a pivotal axis relative to the base frame, each director element having a configuration and being oriented relative to the pivotal axis and relative to the corresponding deflector element such that upon placement of the base frame on the windshield wiper for movement of the base frame with the windshield wiper through the predetermined arc of movement the director elements are urged by the airstream into alignment with the airstream direction and maintain the corresponding deflector elements essentially normal to the airstream direction throughout the predetermined arc of movement, the deflector elements having a configuration for establishing optimum forces tending to bias the deflector members, the base frame, and the windshield wiper, toward the windshield while the base frame moves with the windshield wiper through the predetermined arc of movement, and the deflector elements are maintained by the director elements essentially normal to the airstream direction, throughout the predetermined arc of movement.

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