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:
Sep. 23, 1997
Filed:
Jul. 25, 1996
Stefan Wode, Hannover, DE;
Continental Aktiengesellschaft, Hannover, DE;
Abstract
The invention is directed to a check valve for an air spring which has a supply line through which air is supplied. Even after the supply line is disconnected, the pressure in the air spring should not drop below a certain minimum pressure. When refilling and during storage, a defined position of the flexible member should be provided. The air check valve 4 includes a valve body 8, a valve housing 6 and an elastic valve plate 10. The valve body 8 functions as a base plate and has a concentric ring-shaped sealing edge 24 to impart bending stress to the elastic valve plate 10. The valve body has a bore 30 disposed outside of the ring edge 24. The valve housing 6 has a ring-shaped depression 32 corresponding to the ring edge 24. The valve plate 10 has a center bore 22 which communicates with an air connection 28 via a channel 26 disposed in the valve housing. The peripheral portion of the elastic valve plate 10 is clamped between profiles (18, 20) of the valve body 8 and the valve housing 6. The air check valve can be used in all types of vehicle air springs.