Improved pan for railway line double-block sleepers

(19)

(11)

EP 0 751 257 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	26.03.1997 Bulletin 1997/13

(43)	Date of publication A2:
	02.01.1997 Bulletin 1997/01

(21)	Application number: 96500063.1

(22)	Date of filing: 17.05.1996

(51)	International Patent Classification (IPC)⁶: E01B 1/00

(84)	Designated Contracting States:
	AT BE CH DE DK FI FR GB GR IE IT LI LU MC NL PT SE
	Designated Extension States:
	LT LV SI

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Priority:

18.05.1995 ES 9500946

(71)	Applicant: TRANSFORMADOS DEL NORTE, S.A.
	20150 Zizurkil (Guipuzcoa) (ES)

(72)	Inventor:
	Ventosa Dunjo, Juan 08940 Cornella, Barcelona (ES)

(74)	Representative: Blumbach, Kramer & Partner
	Patentanwälte Radeckestrasse 43 81245 München 81245 München (DE)

(54)	Improved pan for railway line double-block sleepers

(57) The rubber Pan (6) has an asymmetry that varies the rigidities on the sides directly in proportion to the stresses applied by the concrete block (4) due to the wheel-rail interaction. The asymmetrical variation can be achieved by decreasing the number of interspaces (8) between the ridges (7).
The pan subject of the invention is applicable to double-block sleepers without a spacing bar in order to prevent pitching of the concrete block (4) and therefore gage widening of rails.

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