The device has an annular part (20) with a portion retained on an upper cover (18) and another portion retained on a bottom unit (12). The part has a watertight lip (20d) distinct from the retained portions. A suspension spring (11) has an upper end suppor...

Wheel pivot consists of support (8) for pivot unit (7) that can rotate about two articulated joints (9, 10), of which first (9) has at least one degree of freedom to rotate about main axis. Second joint (10) has bearing (33) that has degree of freedom to r...

The suspension stop comprises first and second collars with a row of rollers between them. There is an upper cover (13) in contact with the first collar and an upper retainer (4) in contact with the cover. The upper cover has an axial retainer comprising a...