spring- or pivotally-mounted

Full Title

Wheel guards; Radiator guards, ; Obstruction removers; Fittings damping bouncing force in collisions ( mudguards B62D) > Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects ( integral with waterborne vessels or specially adapted therefor B63B59/02) > Bumper guards > spring- or pivotally-mounted