Spring devices – Vehicle – Comprising compressible fluid
Patent
1995-10-17
1996-12-31
Butler, Douglas C.
Spring devices
Vehicle
Comprising compressible fluid
137493, 137853, 267122, 267 6428, F16F 902, F16K 1704, B60G 1127, B60G 1704
Patent
active
055886400
ABSTRACT:
In air-spring legs with a pressure chamber in each case for motor vehicles, in which the respective pressure chamber can be subjected to different pressures via a connector leading to the outside, a minimum pressure is to be ensured in the respective pressure chamber irrespective of external influences. This minimum pressure is also to be present in the case of a demounted or not yet mounted spring leg in the pressure chamber thereof. For this purpose, the connector of the pressure chamber of the air-spring leg has in each case an automatically operating pressure relief valve which can be designed to maintain a minimum pressure which can be predetermined for the chamber, and by means of which pressure relief valve the connector is open at a pressure which is acting from the interior of the pressure chamber or from the outside and is above the minimum pressure and, at a pressure below it, is closed. The closure element of the pressure relief valve is, in particular, a tubular elastomer which is pulled onto a cylindrical basic body and by means of which bores running through the basic body are separated from one another or connected to one another in terms of flow.
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Butler Douglas C.
Mercedes-Benz AG
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