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Backing plate for disc brake with different damping layers for brake squeal

  • US 5,099,962 A
  • Filed: 09/17/1990
  • Issued: 03/31/1992
  • Est. Priority Date: 09/17/1990
  • Status: Expired due to Fees
First Claim
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1. A damping pad for preventing brake squeal comprising:

  • a first metal plate with a brake shoe fixed to one surface thereof;

    a second metal plate;

    a third metal plate;

    a first damping layer disposed between the other surface of said first metal plate and one surface of said second metal plate, and composed of viscoelastic material for high temperature use having a maximum loss factor at a temperature of 50°

    C. to 100°

    C.; and

    a second damping layer disposed between the other surface of said second metal plate and one surface of said third metal plate, and composed of viscoelastic material for low temperature use having a maximum loss factor at a temperature of 0°

    C. to 30°

    C.

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