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Patent Searching and Data


Title:
HYDRAULIC SPRING
Document Type and Number:
WIPO Patent Application WO2002052167
Kind Code:
A9
Abstract:
The hydraulic volume (4a, 4b) of a hydraulic spring is shut off on one side by a spring element (6) that has been vulcanised into an external ring (8) and is delimited on the other side by a compensation membrane (10). The aim of the invention is to improve the impermeability between the compensation membrane (10) and the external ring (8). To achieve this, the compensation membrane (10) is clamped in a fixed manner between the external ring (8) and the cover (12). The opposing sealing surfaces (14, 16) of the external ring (8) and the cover (12) are preferably configured to be planar. The external edge (18) of the compensation membrane (10) can have a thickening (22), which fills a ring-shaped groove (24) of the same radius in the external ring (8). The hydraulic spring can be used in particular as a primary suspension for use in rail vehicles.

Inventors:
GEDENK VOLKER
Application Number:
EP0113208W
Publication Date:
September 19, 2002
Filing Date:
November 15, 2001
Export Citation:
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Assignee:
CONTITECH LUFTFEDERSYSTEME GMBH
International Classes:
F16F13/18; F16F9/36; F16F13/06; F16F13/10; (IPC1-7): F16F13/10
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