12 Electric motors, for land vehicles; recuperation systems as parts of vehicles for energy recovery, consisting primarily of a recuperation brakes for land vehicles and power storage in the nature of power supplies; trailers; land vehicle parts, in particular axles and axle assemblies for trailer vehicles and busses; land vehicle parts, in particular axles and axle assemblies for trailer vehicles and busses, driven by electric drive motors; land vehicle parts in particular axles and axle assemblies for trailer vehicles and busses, equipped with recuperation systems as parts of vehicles for energy recovery; suspension systems for trucks and trailers, mainly consisting of brackets, bearing bushings, radius arms, axles, axle connecting elements, air springs, leaf springs and shock absorbers; leaf spring axles and leaf springs being land vehicle suspension parts; land vehicle parts, namely, air spring axles and air spring aggregates for suspension components; suspension systems for trucks, trailer vehicles and busses, mainly consisting of air springs, leaf springs, radius arms, brackets, axles, axle connecting elements, bearing bushes, shock absorbers; brakes and brake systems for land vehicles