The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 31, 1996
Filed:
Oct. 17, 1995
Matthias Romer, Weinstadt, DE;
Mercedes-Benz AG, Stuttgart, DE;
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.