Patent ID: 9657751
Date: 2017-05-23
CPC Classifications: B60T,F15B

Claim:
1. A pneumatic pressure brake booster system comprising a pressure servo booster, the system comprising: an air pressure chamber; an ambient air chamber; at leas one ambient ar vent communicating with the ambient air chamber; wherein the at least one ambient air vent comprises a plurality of ambient air vents; a flexible diaphragm separating and defining a wall of the air pressure chamber and the ambient air chamber; at least one air pressure source communicating with the air pressure chamber; a one-piece brake pedal shaft attached to and movable with the diaphragm, the brake pedal shaft slideably extending through the air pressure chamber and ambient air pressure chamber, the brake pedal shaft engaged by and moveable in response to movement of a brake pedal; and a brake master cylinder engaged by the brake pedal shaft.