초록 ▼

Antiskid device for the advance on snow or ice of the driving wheels of motor vehicles. The device is wheel-shaped and has a central hub portion intended to be applied and fixed to the outside of a driving wheel of a motor vehicle, a peripheral deformable crown with a spiked or jagged contour for gr

Antiskid device for the advance on snow or ice of the driving wheels of motor vehicles. The device is wheel-shaped and has a central hub portion intended to be applied and fixed to the outside of a driving wheel of a motor vehicle, a peripheral deformable crown with a spiked or jagged contour for gripping the roadbed and a plurality of spring-loaded and fluid-operated telescopic spokes to allow the crown to yieldingly deflect, so as to lose its normal circular shape at the portion of the crown gripping the roadbed and to resume and keep its normal circular shape in all its remaining portions. The amount of the extension/retraction of the spokes can be controlled remotely from inside the vehicle to which the device is applied.

대표청구항 ▼

An antiskid device for driving motor vehicles on snowy or icy roads, which comprises a hub portion securable to the outside of a motor vehicle wheel and formed with an axial recess and a plurality of radial bores angularly spaced apart from one another, a peripheral crown including a plurality of cu

An antiskid device for driving motor vehicles on snowy or icy roads, which comprises a hub portion securable to the outside of a motor vehicle wheel and formed with an axial recess and a plurality of radial bores angularly spaced apart from one another, a peripheral crown including a plurality of curved sectors sequentially articulated to one another and each having roadbed gripping means, thereby forming an uninterrupted deformable rim, a plurality of fluid-operated telescopic spoke elements each having one end thereof received in a respective radial bore in the said hub portion and in fluid communication with said axial recess and its other end pivoted to a respective cured sector of the crown, a fluid distributor assembly idly mounted in the said axial recess and arranged to sequentially supply compressed fluid to each radial bore, a compressed-fluid source operatively connected to said distributor assembly and arranged to feed compressed fluid to the said fluid-operated telescopic spoke elements to cause the said peripheral crown to expand from a contracted position, in which the said deformable rim is smaller in diameter than the motor vehicle wheel, to an extended working position in which it is larger in diameter, return means arranged to urge the said telescopic spoke elements, and thus the peripheral crown to contract from an extended to a contracted position, and retention means designed to withstand centrifugal forces, thereby holding the said telescopic spoke elements and thus the said deformable crown in their contracted position while driving on non-snowy or non-icy roads.