Pneumatic booster comprising tubular intake and equalizing valves

a1A pneumatic brake booster for a motor vehicle, of the type in which the movements of a control rod are able to determine the openings and closings of at least one axial intake valve which is inserted between a pressure source subjected to the pressure (P) higher than the first pressure (P) and a r...

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Bibliographic Details
Main Authors Maligne, Jean-Charles, Lacroix, Stéphane, Richard, Philippe, Verbo, Ulysse
Format Patent
LanguageEnglish
Published 31.05.2005
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Summary:a1A pneumatic brake booster for a motor vehicle, of the type in which the movements of a control rod are able to determine the openings and closings of at least one axial intake valve which is inserted between a pressure source subjected to the pressure (P) higher than the first pressure (P) and a rear chamber of the booster, and of at least one axial equalizing valve which is inserted between a front chamber and the rear chamber, to actuate a moving partition inserted between the front chamber and the rear chamber, characterized in that it comprises a tubular element of which axially offset transverse faces comprise first elements for sealing the axial intake and equalizing valves and that the control rod is able to operate via two concentric springs having different stiffnesses.