Patent ID: 6595504
Filing Date: 2003-07-22
Classification: F16F

Abstract:
A hydraulic spring comprising:a rubber elastic spring element defining a spring axis; a highly flexible elastic compensating membrane; said rubber elastic spring element and said compensating membrane conjointly closing off a volume; a partition wall partitioning said volume into a work chamber delimited by said spring element and a compensating chamber delimited by said elastic compensating membrane; said chambers being changeable in volume and filled with hydraulic fluid; said partition wall having at least one connecting channel to permit a flow of said hydraulic fluid between said chambers during the operation of said hydraulic spring; an outer ring vulcanized to said spring element; said partition wall having a planar configuration and extending transversely to said spring axis; and, said connecting channel extending within said partition wall and having a first end opening into said work chamber and a second end opening into said compensating chamber; and, said partition wall including first and second discs lying one atop the other; said first and second discs having first and second slots formed therein to correspond to each other; said first and second slots conjointly defining said connecting channel when said first and second discs are mounted one atop the other; and, said first and second discs being rotatable relative to each other so as to change the effective cross section of said connecting channel to thereby adjust the damping action of the hydraulic spring.