Patent ID: 6918249

Claim:
A pneumatic brake booster comprising an envelope ( 2 ) of longitudinal axis (X) formed of a first ( 4 ) and of a second ( 6 ) shell, and defining an interior volume divided by a moving skirt into a low-pressure first chamber and a variable-pressure second chamber, a three-way valve ( 12 ) actuated by a control rod and placing the front chamber and the rear chamber in communication at rest and during a braking phase interrupting the communication between the front chamber and the rear chamber and supplying the rear chamber with pneumatic fluid at high pressure, said booster being characterized by means ( 46 ) including a first sleeve tube ( 36 ) and a second sleeve tube ( 48 ), said second sleeve tube ( 48 ) having tabs ( 52 ) that radially extend outward there from to allow a master cylinder to be attached to said booster by being plastically deformable in the radial direction on enter into a passage ( 54 ) in a flange ( 56 ) of the master cylinder and returning to the initial position when the attachment operation is complete.