Vibration damping shim structure

{
  "publication_number": "US6481545B1",
  "country": "US",
  "kind": "B1",
  "title": "Vibration damping shim structure",
  "abstract": "A vibration damping shim structure is provided, which not only can sufficiently exert vibration damping effect in a wide range of temperatures, but also can prevent a squeal phenomenon particularly in low temperatures. A rubber coating layer a 1 is formed on one side of a first constraint plate a 2 of a metallic plate and a second constraint plate a 4 is stuck to the other side of the first constraint plate a 2 with a adhesive layer a 3 placed in-between. The ratio of the thickness of the first constraint plate a 2 to a sum total of the thickness of the back plate b 1 forming a disc brake B and the second constraint plate a 4 is taken as within 0.1 to 0.2, and the second constraint plate a 4 is used so as to be brought into contact with the back plate b 1.",
  "claims": [
    "1. A vibration damping shim structure having a structure, wherein a rubber coating layer is formed on one side of a first constraint plate and a second constraint plate is stuck to the other side of the first constraint plate with an adhesive layer placed in-between, and wherein a ratio of the thickness of the first constraint plate to a sum total thickness of a back plate of a disc brake pad and the second constraint plate is within a range of 0.1 to 0.2 and the second constraint plate is brought into contact with the back plate.",
    "2. The vibration damping shim structure according to claim 1, wherein a plurality of bubbles is contained in the adhesive layer.",
    "3. The vibration damping shim structure according to claim 1, wherein the adhesive is an acryl pressure sensitive adhesive."
  ],
  "cpc": [
    "B32B 15/06",
    "B32B 15/043",
    "B32B 15/18",
    "F16D 65/0006",
    "F16D 65/0979",
    "F16F 2222/02",
    "F16F 9/306"
  ],
  "assignees": [
    "NICHIAS CORP"
  ],
  "filing_date": "2002-03-21",
  "publication_date": "2002-11-19",
  "grant_date": "2002-11-19",
  "priority_date": "2001-03-30",
  "application_number": "US-10358502-A",
  "family_id": "18952718",
  "citations": [
    "US3966026A",
    "US4103761A",
    "US4373615A",
    "US5099962A",
    "US5762166A",
    "US6213257B1"
  ]
}