초록 ▼

An elastomeric spring useful as an automotive shock or strut end-of-travel bumper having at least three distinct spring rates made possible by a series of roughly cylindrical, hollow elastomeric tubes stacked with the axes of the tubes normal to the axis of deflection of the spring. The tubes collap

An elastomeric spring useful as an automotive shock or strut end-of-travel bumper having at least three distinct spring rates made possible by a series of roughly cylindrical, hollow elastomeric tubes stacked with the axes of the tubes normal to the axis of deflection of the spring. The tubes collapse sequentially to yield multiple spring rates. Non uniform wall thickness tubes, roll axially over the outer peripheral surface of the thicker walls of adjacent tubes during deflection.

대표청구항 ▼

An elastomeric spring having multiple spring rates comprising: an elastomeric body having a bore extended there through coaxial with an axis of deflection, said body being formed of a smaller diameter lobe and a larger diameter lobe integral with said smaller diameter lobe and coaxially aligned alon

An elastomeric spring having multiple spring rates comprising: an elastomeric body having a bore extended there through coaxial with an axis of deflection, said body being formed of a smaller diameter lobe and a larger diameter lobe integral with said smaller diameter lobe and coaxially aligned along said axis of deflection, said smaller diameter lobe having a smaller outside diameter than said larger diameter lobe, said smaller and larger diameter lobes being hollow, flattened cylinders normal to said axis of deflection having cross sections with inner peripheral surfaces formed by an opposing pair of substantially semicircular arcs connected by a pair of substantially parallel straight lines normal to the axis of deflection, said bore passing through the portion bounded by said pair of straight lines, said larger diameter lobe being adapted to roll axially over said smaller diameter lobe when subjected to a load directed along the axis of deflection and having a wall thickness which varies from a minimum thickness portion adjacent to said smaller diameter lobe to a maximum thickness portion axially distal from said smaller diameter lobe.