(19)
(11) EP 0 703 316 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
29.01.1997 Bulletin 1997/05

(43) Date of publication A2:
27.03.1996 Bulletin 1996/13

(21) Application number: 95109679.1

(22) Date of filing: 22.06.1995
(51) International Patent Classification (IPC)6: E01B 5/02
(84) Designated Contracting States:
AT CH DE FR GB IT LI LU SE

(30) Priority: 22.06.1994 RO 107894

(71) Applicant: Radulescu, Stefan
Palo Alto, CA 94306 (US)

(72) Inventor:
  • Radulescu, Stefan
    Palo Alto, CA 94306 (US)

(74) Representative: Hauck, Hans, Dipl.-Ing. 
Mozartstrasse 23
D-80336 München
D-80336 München (DE)

   


(54) Railway rails


(57) The disclosure relates to heavy-masse railway rails in which an increased fatigue resistance is achieved by increasing the moment of inertia of cross-section of rail and by increasing the ratio of fatigue loading, a sub-unity ratio given by the specific moments of fatigue of the two portions of cross-section of rail defined by the horizontal neutral axis of cross-section of rail, or by the squares of normal unity fatigue stresses, which are maximum at the two vertical extremities of cross-section of rail.






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