Pneumatic brake booster with reduced dead travel and braking...

Details Pneumatic brake booster with reduced dead travel and braking... Pneumatic brake booster with reduced dead travel and braking...

2006-05-30

2006-05-30

Lazo, Thomas E. (Department: 3745)

Motors: expansible chamber type

Working member position feedback to motive fluid control

Follower type

C091S369200

Reexamination Certificate

active

07051640

ABSTRACT:
A pneumatic brake booster with reduced dead travel comprising a skirt (10) which can move in a sealed manner in a casing, delimiting a low-pressure chamber and a variable-pressure chamber, with respect to a pneumatic piston (16) over a certain travel. The displacement of the pneumatic piston being controlled by the skirt in a first direction when the skirt comes into contact with a first face of an annular plate (100) which is arranged in the low-pressure chamber and is fastened rigidly to the pneumatic piston, and the displacement of the piston in a second direction is controlled by an elastic means mounted in the low-pressure chamber and bearing by one of its ends on a second face of the annular plate (100).

REFERENCES:
patent: 5475977 (1995-12-01), Gautier et al.
patent: 5572870 (1996-11-01), Castel et al.
patent: 6591734 (2003-07-01), Bacardit
patent: 6880447 (2005-04-01), Harth et al.

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