Robert Boschgmbh

Bosch Systemes De Freinage

Chassis Brakes International B.v.

Jean-Pierre Boisseau

Jean-Claude Mery

Roland Levrai

Aleksander Hurwic

Magali Rossignol

Nicolas Oudin

Bruno Lelievre

Herve Pujol

Aurélie Teichmann

The disc brake device comprises a piston () designed to press a pad () against a disc () when said piston is subjected to a first force along a first axis (z'z) in a direction directed from the piston toward the pad. A first plate () is inserted between a first surface () of the piston () and the pad () and designed to generate a second force along the first axis (z&#x2032;z) in a direction directed from the pad toward the piston when the pad () is caused to move as a result of rotation of the disc (

Disc brake device to keep a vehicle stationary when parked

A disk brake having a support () for a pad () having a first lug () located in a first cavity () of a holder () and a second lug () located in a second cavity () of a holder () to guide the support () in a direction perpendicular to a plane of a rotor on movement of the brake pad () toward the rotor to effect a brake application. The improvement comprising a plate () attached to the support () by branches () of a first spring () that extends from a first end () and by branches () of a second spring () having hat extend from a second endto respectively resiliently retain lug () in cavity () and lug () in cavity () while moving with the support () during a brake application.

System for fitting disk brake pads and disk brake comprising such a system

A brake device for a motor vehicle having a friction first element with a first face that is pressed against a first face of a second element secured to a wheel of the motor vehicle during a brake application and an third element for applying a braking force bearing via a first end against a second face of the friction first element that is opposite from the first face of the friction first element. The brake device including an amplifier arrangement with a first part separated from a second part by a mutual and a tiltable plane containing a bearing surface located between the friction first element and the application third element relative to a plane for the first face of the second element. The amplifier arrangement rotating applied during a brake application to modify the pressing of the first face against the second face on the friction first element.

Disc brake comprising at least one inclinable brake pad

A disc brake for a vehicle having a housing with a cavity therein that is divided by a thrust plate into a fluid chamber and an atmospheric chamber. A converter located in the fluid chamber includes a fixed reaction plate and a sliding plate that are separated by a plurality of balls located in variable depth grooves in the sliding plate and a reaction plate. A rotary input applied to an input shaft caused the sliding plate to rotate and move linearly as the balls move within the grooves to provides a force that acts through the thrust plate to moves a piston that is located in the atmospheric chamber to effect a mechanical brake application. Pressurized fluid supplied to the fluid chamber acts on the thrust plate that moves thrust plate and moves the piston to effect a hydraulic brake application.

Vehicle disk brake with a motion converter

A disk brake cylinder having a bore for retaining a piston ( ) connected by an input shaft ( ) to a parking brake mechanism. The input shaft ( ) is rotated to provide linear translation of the piston through a ball ramp mechanism to effect a parking brake application. The ball-ramp mechanism includes a first groove ( ) located on a face ( &prime;) of the input shaft ( ) and a second groove ( &prime;) located on a face ( &prime;) of the moving member ( ). The first ( ) and second ( &prime;) grooves retain and trap a plurality of balls ( ) and have escapement zones ( &prime;) with a convex surface that extend from a bottom ( ) of the groove ( ). The plurality of ball ( ) in a rest position are located near the bottom of the convex surface but never touch the bottom ( ) and as a result initial rotation of the input shaft ( ) provides for non linear translation of the moving member ( ) such that as the ball initially roll up the convex surface at a fast rate to take up the play in the mechanism and then moves then moves the moving member ( ) at a slower rate to effect a brake application.

Disc brake cylinder with parking brake mechanism

A braking device for a vehicle having rear and front pressure receivers ( ) connected with a mechanical pressure generator ( ) and an electrical pressure generators ( ) and selectively controlled by solenoid valves ( ). An inlet ( ) of the front pressure receiver ( ) is connected directly to an outlet ( ) of the electrically controlled pressure generator ( ) while a solenoid valve ( ) selectively connects an outlet ( ) of the mechanically controlled pressure generator ( ) to the inlet ( ) of the front pressure receiver ( ) to control braking. The fluid pressure communicated from the electrically controlled pressure generator ( ) being selectively altered to create a desired braking for the vehicle.

Braking device with combined power-assistance and control

A sliding caliper disc brake for a motor vehicle having a disc, a carrier (,), a caliper (,) and pads (,). The carrier (,), respectively, provides bearing surfaces (,) for the caliper (,) and pads (,) having a non-zero angle (Ab) which opposes rotational movement between the caliper (,) and pads (,) when the disc turns in a direct sense (D). Thus, a resistance to a braking torque generated during braking is dampened by a shear force developed between the caliper (,) and pads (,).

Shear-damped disc brake

A pneumatic brake booster for a motor vehicle having a rigid casing (,) with a moving partition (,) to define a front chamber (,) and a rear chamber (,) therein. A pneumatic piston (,) carried by the moving partition (,) has a bore which retains a three-way valve (,). The three-way valve (,) is connected to an actuating rod (,) which acts on a plunger (,) to connect the front chamber (,) to the rear chamber (,) with a first pressure in a rest position and connects the rear chamber (,) to a second pressure in an actuation position. In the actuation position, a pressure differential develops across the movable partition (,) to create a boost force which is transmitted to a push rod (,) through a reaction disc (,) retained in a cup (,) to develop a braking force in response to an input force applied to the actuating rod (,). An intermediate member (,) located between the cup (,) and plunger (,) slides with respect to the piston (,) and plunger (,). During an emergency situation, members (,) of the intermediate member (,) secure the cup (,) to piston (,) and allow a braking force to be maintained by wheel brakes of a vehicle even if an operator terminates an input force.

Growing community of inventors

Paris, France

Jean-Pierre Boisseau