Appeal No. 2001-2378 Application No. 09/479,932 requires that the intermediate layer has a rigidity x such that at the maximum permissible stress in the rail by bending generated in response to wheel load, the intermediate layer has a substantially non-elastic property, so that further bending of the rail under additional load causes only insubstantial additional stress in said rail. 4Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 NextLast modified: November 3, 2007