Patent ID: 7926794
Filing Date: 2011-04-19
Classification: F16F,Y10T

Abstract:
1. A rolling-lobe flexible member of elastomeric material for an air spring, the flexible member forming a rolling lobe during spring action in the operating state, the flexible member comprising: a wall wherein a rolling lobe forms during operation of said air spring; a reinforcement arrangement embedded in said wall and extending over the length of said flexible member; said reinforcement arrangement including mutually separate first and second rubberized cord fabric layers disposed in spaced relationship to each other over said length of said flexible member; said first rubberized cord fabric layer being an outer rubberized cord fabric layer and having a first stress-strain characteristic; and, said second rubberized cord fabric layer being an inner rubberized cord fabric layer having a second stress-strain characteristic different from said first stress-strain characteristic so as to cause said reinforcement arrangement to be unsymmetrical with respect to said first and second stress-strain characteristics.