Vibration damping mechanism for hydraulic booster

A vibration damping mechanism for a hydraulic booster including a manually operated pedal comprising:

• a hydraulic booster body;
• a piston disposed within said booster body;
• a control valve mechanism disposed within said body;
• an input member having first and second lands slidably disposed within said body and operatively connected to said control valve mechanism disposed within said body;
• first and second push rods positioned in tandem for operatively connecting said input member to said manually operated pedal;
• means for bendably connecting said first and second push rods to each other at each end thereof;
• and
• means for allowing eccentrical arrangement of said each end of said push rods relative to said input member such that radial movement of said each end of said push rods is limited by said input member such that a radial normal force is generated between said push rods and said booster body for effecting frictional sliding resistance between said first land and said body and between said second land and said piston to dampen said vibration of said input member during operation of said booster, said means for allowing eccentrical arrangement including a recess formed in said input member having a peripheral wall wherein said first and second push rod ends are positioned within said recess formed in said input member, and said radial movement of said push rods is limited by said peripheral wall of said recess.