TWO STAGE MASTER CYLINDER WITH QUICK PRESSURE RELEASE

摘要

The control apparatus (1) comprises: cylinder means (2) having a first end (102) and an opposite second end (202) and traversed axially by a slide chamber (3); piston means (4) mounted slidingly in said slide chamber (3) between a rest position and a distribution position to distributing ports (5), and vice versa, said piston means (4) being provided with first perimeter annular sealing means (6) in said slide chamber (3), defining in the latter a first half-chamber (103) facing said distributing ports (5), and an opposite adjacent second half-chamber (203).