US Patent 11176921 Silencer for clutch air booster

A silencer for a clutch air booster may include an exhaust retainer including a disk-shaped bottom portion seated on the upper side of an outlet body of the clutch air booster and a retainer hole formed in the center of the bottom portion, a valve seated on the exhaust retainer to cover the retainer hole, a valve housing coupled to an outer side of the exhaust retainer and forming an inner space configured to accommodate the valve, and a rubber cap coupled to an outer side of the valve housing to cover an upper side of the valve housing.