The spring (1) has a metal thread (5) whose electrical resistance is changed in dependence on the deformation of the spring. The metal threads are arranged in the inside of spring or integrated at the outer side of the spring. The ends of the metal threads...

A suspension device for suspension of an axle 2 by an intermediate portion of a single leaf spring 5 has first restriction means which restricts, upon breakage of the leaf spring 5 at a position behind the intermediate portion of the spring, the rear porti...

The axle (5) has longitudinal rocker arms (2) connected by a welded profile (3) and attached to a compression spring (7). The spring has a spring middle line and a force action line, and guided by a guiding element in upper and lower spring bearings. The g...