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Method of removing frozen material from a wiper

  • US 6,129,093 A
  • Filed: 08/20/1998
  • Issued: 10/10/2000
  • Est. Priority Date: 01/31/1996
  • Status: Expired due to Term
First Claim
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1. A method of improving transmission of light through a light transmitting screen member having a frozen mass merely trapped between the screen member and a wiper blade which is moveable across the screen member, the method comprising:

  • repeatedly vibrationally flexing the wiper blade to move different parts of the wiper blade, out of phase with one another, out of and into contact with the screen member, the strength of repetitive vibrational flexing;

    a) achieving an intensity of movement of the different parts of the wiper blade out of and into contact with the screen member to create recurrent impact forces, in an out-of-phase manner, upon different parts of the screen member; and

    b) effecting removal of the frozen mass under the influence of the recurrent impact forces.

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