Patent ID: 6708626
Filing Date: 2004-03-23
Classification: B61D

Abstract:
A double walled damping structure comprising:two parallel face plates; and a plurality of ribs extending in the same direction to connect said two parallel face plates, wherein said ribs comprise at least two adjacent inclined ribs, wherein in a section taken perpendicularly to the direction of extension of said ribs, a hole defined by the surfaces of the adjacent two inclined ribs and the inner surfaces of said face plates are quadrangular such that vibrations from one of said face plates to the other of said face plates are reduced, wherein all or most of said ribs are inclined relative to said two face plates, and in a section taken perpendicularly to the direction of extension of said ribs, all or most of holes defined by the surfaces of the adjacent two of said ribs and the inner surfaces of said face plates are trapezoidal.