TRAILER SUSPENSION AND LOCKING COLUMN THEREFOR

摘要

A lockable column (50) is mounted between a trailer frame (14) and a trailing arm suspension (16) and has a primary fluid chamber connected to a reservoir chamber. The chambers are filled with an incompressible fluid and a valve (130) in the fluid path between the two chambers selectively permits or prevents fluid flow between them. When fluid flow is prevented, the column is locked.