Coil springs for vehicle suspensions; Airsprings for vehicle suspension; Springs for vehicle suspension systems; Suspension apparatus for vehicles; Suspension parts for vehicles; Suspension struts for vehicles; Suspension systems for vehicles; Suspensions for vehicles; Shock absorbers being parts of vehicle suspension; Combined spring and shock absorber units for vehicles; Shock absorber adjustment apparatus for vehicles; Shock absorbing cylinders (parts of vehicles); Shock absorbing springs for vehicles; Suspension shock absorbers for vehicles; Appliances for steering vehicles; Steering joints for vehicles; Torsion dampers for vehicles; Hydraulic couplings with integral dampers, for land vehicles