Patent ID: 6986412
Filing Date: 2006-01-17
Classification: F16F

Abstract:
1. A tuned cradle type damping device, comprising: a support having a first circular-arc support surface that is at least partially circular in shape, the first circular-arc support surface having a thickness dimension that extends in a direction of a center axis of the first circular-arc support surface; two swings respectively positioned on opposite sides of the first circular-arc support surface outside of the thickness dimension of the first circular-arc support surface; and at least one roller rotatably supported on the first circular-arc support surface to be rolled thereon and moved around the center axis thereof, and both ends of the at least one roller are rotatably connected to the two swings to support the two swings, the at least one roller being between the two swings, wherein: copper plates are disposed on the support and placed opposite to the two swings, respectively, while being individually spaced from the two swings, and permanent magnets are disposed on surface of the two swings, directed to the copper plates.