Patent ID: 8317172
Filing Date: 2012-11-27
Classification: B60G,F16F

Abstract:
1. A multistage jounce bumper for responding to a jounce force in stages, comprising: a jounce bumper cushion comprising a resilient material; and a hydraulic jounce bumper connected to said jounce bumper cushion, said hydraulic jounce bumper comprising: wherein a first stage of response to a jounce force during a jounce comprises: wherein a second stage of response to the jounce force during the jounce comprises said control valve being in said open state such that hydraulic fluid in said hydraulic fluid reservoir is metered flowably into said hydraulic fluid reservoir as said piston moves into said cylinder so as to thereby absorb energy of the jounce; and wherein said control valve is tuned such that during the jounce said first stage response precedes said second stage response.