Back to results
US 9,694,798 B2Granted
Vacuum brake booster
AssigneeRobert Bosch GmbH
InventorsJoan Simon Bacardit, Bruno Berthomieu
Life of this patent
Estimating the term…
Abstract
A vacuum brake booster includes a housing in which a piston is accommodated, the piston being supported by a cylindrical body sealingly passing through an opening in the bottom and having a key that engages with the return element of the cylindrical recess. A damping element separates the front of the key from the rear of the base supporting the piston and the bead of the membrane.
Claims3
A vacuum brake booster, comprising:
- a housing formed by a back portion and a front cover, the housing configured to accommodate a piston that delimits two chambers of the housing in which a vacuum is initially established, wherein one of the two chamber is connected to the atmosphere by a valve assembly to create, upon command, a pressure difference applied to the piston pushing a master cylinder by an intermediary piston;
- a cylindrical body that houses a valve assembly controlling a pneumatic operation of the vacuum brake booster, the cylindrical body including:
- a base plate to which a membrane of the piston is secured;
- and
- two grooves configured to bear an inverted U-shaped key which, when in a rest position, engages with a stopping surface of a return element of the back portion;
- and
- a damping element placed between a surface of the key and a surface of the base plate of the cylindrical body.
4 more elements
Dependencies are inferred from the claim text.