Patent ID: 8991565
Filing Date: 2015-03-31
Classification: F16D,F16J

Abstract:
1. A disc brake piston cap interposed between a caliper ( 1 ) and a piston ( 2 ) to protect the piston against attack, this cap being made up of a bellows-style concertina-folded boot having an outer edge and an inner edge to be housed in an annular groove ( 11 ) of the caliper ( 1 ) at a mouth of a bore ( 12 ) accommodating the piston ( 2 ), the outer edge of the cap being fixed to the caliper at an outer side ( 111 ) of the annular groove ( 11 ) and the inner edge of the cap being provided with a bulge housed in a groove ( 22 ) of the piston ( 2 ), the piston cap being characterized in that the first and second inner articulations ( wherein the longitudinal ribs permit air to freely exhaust from the annular groove while the longitudinal ribs contact the surface of the piston.