Patent ID: 8196716

Claim:
A fixed caliper for a disc-brake comprising two side walls at a distance from each other which delimit space suitable to accommodate a portion of a brake disc, in which one of said side walls comprises means for attaching the caliper to a vehicle so that said caliper is integral in rotation and in translation and the side walls are connected to each other by means of a connecting structure which straddles the disc space, in which each of said side walls delimits at least one seating capable of accommodating at least one pad and in which the caliper comprises thrust means capable of forcing the pads against the brake disc to clamp the pads, said thrust means being secured to said side walls in such a way that said side walls absorb the entire clamping force and said seatings being capable of securing the pads in such a way that the side walls also absorb the entire braking force applicable by the pads to the brake disc by friction, in which said connecting structure comprises one or more shells, arc-shaped or arranged along an arc, formed as a single integral structure having both side walls along outer circumferential edges thereof, in which the slenderness of said one or more shells expressed as the ratio of thickness to circumferential extension of said one or more shells relative to an axis of rotation of the brake disc is less than 17/100, wherein the radial thickness of all shells forming said connecting structure is constant along the entire circumferential extension of said connecting structure; and wherein said one or more shells delimit one or more through openings, in which the total area of opening of said through openings is less than 40% of the total area of the one or more shells including that of said through openings in which the slenderness of the entire connecting structure formed by said one or more shells, including the through openings, expressed as the ratio of thickness to circumferential extension of said entire connecting structure relative to the axis of rotation of the brake disc is between 2/100 and 4/100.