ELASTOMER SPRING FOR RAILWAY CAR Russian patent published in 2014 - IPC F16F1/40 B61G9/06 

FIELD: transport.

SUBSTANCE: invention relates to machine building. This spring comprises spring element and two metal plates. Spring element is composed by billet made of thermoplastic polyether elastomer with Shore D hardness in the range of 40-45. Said billet features cylindrical shape and has axial hole. Elastomer is described by the fact that after axial contraction by 30% of initial billet length it retains a notable part of shortening caused by said contraction. Aforesaid plates can be attached to billet ends. Every plate has through central bores, shaped peripheral contour and multiple mechanical fasteners radially remote from the centre. Said fasteners are made integral with said plate, arranged perpendicular to its surface and have the tooth extending from fastener lateral side. In compliance with second version, said fasteners have base surfaces located perpendicular to the line dividing every plate in symmetric halves. In compliance with second version, said fasteners have base surfaces located perpendicular to the line dividing every plate in symmetric halves.

EFFECT: higher reliability, ruled out excessive radial expansion of spring element at contraction.

17 cl, 23 dwg