Robert Boschgmbh

Roger Bosch Gmbh

Vincent Dupuis

Roland Raab

Wolfgang Huschenhoefer

Georg Ketteler

Hagen Kuckert

Olivier Bugada

Andreas Mayer

Nathalie Beccafico

Jérôme Bertrand

Thorsten Gudehus

Aleksander Bosch Systemes De Freinage Hurwic

A brake disk has a wear-reducing surface coating including a wear indicator and a friction ring. The wear indicator is a raised portion on the friction ring and is underneath the surface coating. The raised portion runs around the friction ring in the form of a wavy line, for example. The raised portion has a height which corresponds to a wear limit.

Brake disk

A gray cast iron brake disk has a thermally applied wear-reducing surface coating containing chromium and/or tungsten carbides. The surface coating has a roughness reduced to about 0.5 to 1 &#x3bc;m to shorten a wearing-in period.

A parking and emergency brake device having an actuating device () that is supplied with pressurized fluid wherein a piston () slides in a cylinder () to axially delimits a front hydraulic pressure chamber () and exert a determined mechanical force on an operating member over an actuating travel and a valve () to selectively place the front pressure chamber () in communication with a pressurized hydraulic fluid supply port (). The valve () is interposed between the piston () and the cylinder () to controlled by an axial movement of the piston () over a control travel prior to actuating travel.

Device for the hydraulic actuation of a parking brake and method for operating such a device

A drum brake comprising a plate on which at least one shoe having a friction lining is mounted. A lever moves the shoe against a wheel drum in response to a braking command to effect a brake application. A resilient return spaces the shoe apart from the drum when braking ceases. The shoe is mounted to slide along an essentially radial axis between two guide walls secured to the plate The lever for applying the shoe bears against the inside wall of the shoe for exerting a substantially radial force.

Drum brake and brake shoe for one such brake

In order to facilitate assembly and disassembly of a vehicle, the invention provides a method of assembling and disassembly a drum brake (). In this assembly and disassembly method, the operating spacing of two brake shoes (and) inside a drum brake () is pre-adjusted. The invention makes it possible for the drum brake () to be delivered with the brake shoes (and) in a position where they are clamped against each other, corresponding to assembly clearance, while potentially retaining the spacing needed to match the operating clearance of the drum brake. A single action (A, B) on the hand-brake lever () enables the shoes to be moved from assembly clearance to operating clearance.

Motor vehicle drum brake and related assembling method

A drum brake having an adjustable-length strut (,) to compensate for clearance due to wear between first (,) and second (,) friction members and a drum (,). The adjustment being achieved by the rotation of a toothed wheel (,) driven by an adjustment blade (,) mounted on a rocking lever (,). The rocking lever (,) has an inhibitor blade (,) which intercepts the toothed wheel (,) whenever a risk of excessive adjustment occurs by disengaging the adjustment blade (,) from the toothed wheel (,). The inhibitor blade (,) prevents subsequent rotation of the toothed wheel (,) until the risk of excessive adjustment dissipates.

Growing community of inventors

Colomiers, France

Vincent Dupuis