Abstract: The covering device consists in an aerated grate comprising tabs AL with an automatic and manually controlled rotation angle according to the intensity of rain and/or snow or wind.Tabs AL have a semitubular base profile 1, a baffle plate 2, a dripping plane 3, a vertical wall or plane 4, and a plurality of intermediate planes 5 with upper portions 5A, having bounce-preventing and gutter functions to collect rain in a double gutter frame 7, which rain water is then led into a reservoir 21 which will, due to the increasing weight thereof, lift a counterweight 9 to cause the automatic closing of tabs AL.Alternatively, the tabs may be closed by operating manual lever 16 or by means of a wind operated automatism having an aerodynamic plane 27 being provided with a limit stop rotation angle to allow it to recede from the wind.

Abstract: An automatic undercarriage system for a motorcycle or the like is disclosed, for balancing of the same at still or low running speeds, including a pair of wheeled arms mounted on the frame of the motorcycle and operated by hydraulic cylinders by a displacement pumps connected to the motorcycle transmission so that when the motorcycle starts moving said undercarriage is lifted, and including means for lowering it when the motorcycle is sharply braked and/or comes to still.