Acoustically decoupled hydraulic bearing

Details Acoustically decoupled hydraulic bearing Acoustically decoupled hydraulic bearing

2007-08-21

2007-08-21

Burch, Melody M. (Department: 3683)

Spring devices

Resilient shock or vibration absorber

Including energy absorbing means or feature

C267S140200

Reexamination Certificate

active

11013414

ABSTRACT:
A hydraulic bearing includes a support spring made of elastomeric material and a hydraulic volume partitioned into a work chamber and a compensating chamber. A partition wall is disposed between the two chambers and includes a transfer channel. For acoustic decoupling, a membrane-like decoupling element is seated and is displacement limited between two lattice plates. The decoupling element is made of flexible elastic material and is clamped laterally to be pressure tight. The decoupling membrane is radially prestressed for matching the acoustic decoupling to specific disturbing frequencies (hum frequencies). This prestressing takes place preferably because of the shrink process during vulcanization of the decoupling membrane which is made of raw rubber. The decoupling membrane can have a peripheral bead and at least one transverse strut. The strut can have a reinforcement insert.

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