Abstract: An attachment system for a snow chain is disclosed, comprising a rolling track (1, 2a, 2b, 12) joined to a plurality of connecting arms (3) converging towards a common central structure (4), wherein a plurality of elastic ropes (5) forming elastic attachments between said plurality of connecting arms (3) and an anchoring ring (7) fixed to a rim (C) of a wheel, and wherein at least an inextensible linear element (9) is further provided, which may be engaged with or disengaged from a working position in which it is apt to replace the elastic attachment of at least one of said elastic ropes (5) with an inextensible attachment.

Abstract: An attachment system for a snow chain is disclosed, comprising a rolling track (1, 2a, 2b, 12) joined to a plurality of connecting arms (3) converging towards a common central structure (4), wherein a plurality of elastic ropes (5) forming elastic attachments between said plurality of connecting arms (3) and an anchoring ring (7) fixed to a rim (C) of a wheel, and wherein at least an inextensible linear element (9) is further provided, which may be engaged with or disengaged from a working position in which it is apt to replace the elastic attachment of at least one of said elastic ropes (5) with an inextensible attachment.

Abstract: An anti-skid system for vehicle wheels includes gripping elements which are intended to make contact with the tread of the wheel and are arranged at the free ends of arms joined to a central connecting body, a clamping element (15) apt to be fastened to the rim of the wheel, and a constraining assembly able to establish a connection between the arms (21, 22) and the clamping element (15), the arms (21, 22) being in the form of flexible laminar strips and the constraining assembly including at least one linear traction member (30) which is non-extendable, but adjustable lengthwise; an advantageous clamping element (15) which makes the system more cost-effective and mounting thereof on the wheel more convenient is also described.

Abstract: An anti-skid system for vehicle wheels includes gripping elements which are intended to make contact with the tread of the wheel and are arranged at the free ends of arms joined to a central connecting body, a clamping element (15) apt to be fastened to the rim of the wheel, and a constraining assembly able to establish a connection between the arms (21, 22) and the clamping element (15), the arms (21, 22) being in the form of flexible laminar strips and the constraining assembly including at least one linear traction member (30) which is non-extendable, but adjustable lengthwise; an advantageous clamping element (15) which makes the system more cost-effective and mounting thereof on the wheel more convenient is also described.

Abstract: Alternating current energized appliances, particularly lamps, are extinguished in delayed fashion with the power delivered to the appliance being sharply reduced during at least the last portion of the extinction cycle. Delayed interruption of power is accomplished by means of a first circuit, including a series connected diode and heater, connected in parallel with the appliance and a second circuit, including a series connected diode and temperature responsive switch, connected in parallel with a main power switch. The heater and temperature responsive switch are mounted in proximity to one another and the diodes are arranged in opposition.