| 摘要 |
A shock absorber for a vehicle includes telescoping cylinder and piston assemblies, with the piston assembly including two pistons connected by a piston shaft which passes through a transverse headwall in the cylinder. Fluid flow from one side of the headwall to the other is restricted by ports in the headwall and, in an alternative embodiment, by external flutes in the piston shaft. The piston and cylinder may be spring loaded with an external coil suspension spring, or may be biased toward an extended position by a pressurized internal gas reservoir. The dual piston design of the shock absorber eliminates the need for a separate gas reservoir, either within the shock absorber or external to the shock absorber, while also obtaining an efficiency of design by stabilizing the piston against rocking loads without the need for a separate piston rod seal. |
