Air check valve for an air spring

Details Air check valve for an air spring Air check valve for an air spring

1996-07-25

1997-09-23

Ferensic, Denise L.

Fluid handling

Line condition change responsive valves

Direct response valves

267 6411, F16K 1514

Patent

active

056694180

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.

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