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Disc brake with removable caliper reinforcing arm

  • US 4,576,257 A
  • Filed: 07/11/1984
  • Issued: 03/18/1986
  • Est. Priority Date: 07/13/1983
  • Status: Expired due to Fees
First Claim
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1. A disc brake, of the type incorporating a caliper astride a rotating assembly to be braked, the caliper being formed by two axially spaced-apart beams positioned axially on each side of the rotating assembly and by two circumferentially spaced-apart arms passing over the periphery of the rotating assembly and joining the two beams to one another, the two spaced-apart arms and the two axially spaced-apart beams defining a radial opening for mounting and removing friction components which cooperate with the rotating assembly to be braked, characterized in that the brake comprises a third caliper arm providing a rigid connection between the axially spaced-apart beams in order to strengthen the caliper, the third caliper arm lying above and extending over the opening and having one end pivotally mounted about a hinge shaft on one of the beams and the other end rigidly joined without play to the other beam, the brake having an eccentric system coaxial with the hinge shaft of the third arm, the hinge shaft formed by a bolt having a cylindrical shaft portion cooperating with a bore formed in the one beam, said cylindrical shaft portion including a longitudinal groove receiving a longitudinal key which fixes firmly in rotation thereto a cylindrical bush having a key-receiving groove in an eccentric bore in which the cylindrical shaft portion is disposed, the bush having an outer cylindrical surface disposed within a bore formed in the third arm so that rotation of the bolt and rotationally fixed bush causes said third arm to be displaced axially and provide said rigid connection.

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