Patent Number: 6,332,623

Title: Level adjustment device for vehicles with air springs

Abstract: Level adjustment device for vehicles with air springs 8a through 8d, bywhich a vehicle body is furnished with suspension on at least one vehicleaxle, which includes the following:a source of compressed air 2, which, for the purpose of filling air springs8a through 8d, can be connected to air springs 8a through 8d via an airdryer 4, the air dryer 4, for the purpose of filling the air springs, isconnected on one side to air springs 8a through 8d through a check valve 6that is open to air springs 8a through 8d, each air spring 8a through 8d,for the purpose of emptying them, can be connected through the air dryer 4and through a pneumatically controlled first distribution valve 10 to theatmosphere, wherein the pneumatic control input 38 of this distributionvalve 10 is then impinged through a second controllable distribution valve12 with the pressure in air springs 8a through 8d against a restoringforce 50 acting on the pneumatic control input 38, the pneumatic controlinput 38 of the pneumatically controlled first distribution valve 10, forthe purpose of ending the emptying process, can be connected to theatmosphere, wherein the air dryer 4 is connected on the other side to airsprings 8a through 8d through a pneumatically controlled thirddistribution valve 14, wherein the pneumatic control input 44 of thisdistribution valve is then impinged with the pressure of air springs 8athrough 8d against a restoring force 52 acting on the pneumatic controlinput 44.

Inventors: Behmenburg; Christof (Lauenau, DE), Westerkamp; Helge (Hannover, DE)

Assignee:

International Classification: B60G 17/015 (20060101); B60G 17/04 (20060101); B60G 17/052 (20060101); B60G 011/26 (); B60G 009/04 (); F16F 009/43 ()

Expiration Date: 12/25/2014