Back to results
US 2003/0209136 A1Published application
Pneumatic brake booster with reduced noise levels
AssigneeRobert Bosch GmbH
InventorTimothy Lorkin
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeRobert Bosch GmbH
InventorTimothy Lorkin
Estimating the term…
The main subject of the present invention is a pneumatic brake booster comprising an envelope formed of two shells (3, 5) defining an interior volume divided into two chambers by a skirt mounted so that it can slide with sealing, said skirt (7) is actuated by a pressure difference brought about by the operation of a three-way valve (17) arranged in a pneumatic piston arranged more or less in the central part of the skirt, said booster also comprising means (53) for reducing the noise, characterized in that said means (53) are bearing means comprising a layer of elastomer arranged between one of the shells (3, 5) and a rigid element. The present invention applies mainly to the motor industry. The present invention applies in particular to the industry concerned with braking systems for motor vehicles, especially for private cars.
Pneumatic brake booster comprising an envelope formed of two shells (3, 5) defining an interior volume divided into two chambers by a skirt mounted so that it can slide with sealing, said skirt (7) is actuated by a pressure difference brought about by the operation of a three-way valve (17) arranged in a pneumatic piston arranged more or less in the central part of the skirt, said booster also comprising means (53) for reducing the noise, characterized in that said means (53) are bearing means comprising a layer of elastomer arranged between one of the shells (3, 5) and a rigid element.
Pneumatic brake booster according to any one of the preceding claims, characterized in that the means (53) are fixed to said booster by a screw-nut assembly.
Pneumatic brake booster according to any one of the preceding claims, characterized in that the layer of elastomer 50 is included between the rigid first element and a rigid second element.
Dependencies are inferred from the claim text.