US 5,687,959 AGranted

Hydraulically damping rubber bearing

AssigneeFirma Carl Freudenberg

InventorAxel Rudolph

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Abstract

A hydraulically damping rubber bearing comprising an inner supporting body surrounded with radial clearance by an outer supporting body. The inner and the outer supporting bodies are joined together by a resilient elastomeric element forming the boundary of a working chamber filled with damping fluid. The working chamber is separated from a compensating chamber by a separating wall having at least one duct-shaped opening and is connected to the compensating chamber in a manner such that it is in fluid communication with it. The compensating chamber is sealed on the side facing away from the separating wall by a compensating membrane. The separating wall has a centrally arranged opening which surrounds the inner supporting body with radial clearance, the annular gap formed by the clearance being designed as a damping duct. The separating wall also has at least one window filled in by a window membrane made of elastomeric material to isolate higher frequency vibrations.

Claims12

Dependent claims

A hydraulically damping rubber bearing comprising:

(a) an inner supporting body;
(b) an outer supporting body surrounding the inner supporting body with radial clearance between the inner supporting body and the outer supporting body;
(c) a resilient elastomeric element positioned between the inner supporting body and the outer supporting body and joining the inner supporting body to the outer supporting body;
(d) a separating wall separating a working chamber from a compensating chamber, the separating wall comprising at least one opening allowing damping fluid to flow between the working chamber and the compensating chamber;
and
(e) a compensating membrane sealing the compensating chamber on a side facing away from the separating wall;
wherein the opening of the separating wall is a centrally arranged opening which surrounds the inner supporting body with radial clearance thereby forming an annular gap which acts as a damping duct, and wherein the separating wall comprises at least one window with a window membrane made of elastomeric material positioned in the window.

4 more elements

Dependencies are inferred from the claim text.