Poclain Hydraulics Industrie

St&eacute;phane Vidal

Jean-Marie Rouillard

Jacques Fontaine

Jean-Claude Case

Louis E Martin

Jean-Pierre Souply

Claude Manon

Andr&eacute; Grauby

A braking system for braking a rotor relative to a stator, the braking system comprising braking means respectively secured to the rotor and to the stator, a brake piston, return means for returning the piston to its braking position, a braking chamber, and a brake release chamber, which chambers are interconnected via a link duct serving to generate a flow of fluid in an assisted braking situation in which the braking chamber is connected to a fluid feed duct, while the brake release chamber is connected to a fluid return duct. The link duct is equipped with means for limiting the flow of the fluid at least in the direction going from the brake release chamber to the braking chamber.

Braking system for braking a rotor relative to a stator

A drive device incorporating a hydraulic motor and a planetary reduction gear. The motor includes a housing in which radial pistons are disposed. The device includes a coupling between the output of the motor and the input of the reduction gear, the reduction gear including a housing in which a planetary reduction gear system is disposed having an output provided for driving in rotation. The housing of the motor and the housing of the reduction gear form distinct enclosures and the device allows circulation of fluid between these housings and for controlling this circulation by limiting this circulation in at least one direction of circulation between the housing of the motor and the housing of the reduction gear.

Drive device comprising a hydraulic motor and a reduction gear

A braking system (S) for braking a rotor ( ) relative to a stator ( C, &prime;C), said system comprising two series of brake disks ( ) secured respectively to the stator and to the rotor and disposed in a disk enclosure ( ). The system further comprises a brake piston device ( ) urged continuously in the braking direction by resilient return means ( ). The piston device is urged in the brake release direction by feeding a brake release chamber ( ) with fluid, and it is urged in the braking direction by feeding a braking chamber ( ) with fluid. The braking system includes a cooling device for cooling the brake disks ( ) by means of fluid flow, which device is provided with a cooling duct ( ) branching from the brake release duct ( ) which feeds the brake release chamber ( ) and communicating with the disk enclosure ( ). It is provided with means ( ) for limiting the quantity of cooling fluid tapped by the cooling duct ( ) from the brake release duct ( ).

A bearing device ( A) for supporting a wheel and equipped brake including a rotary shaft ( ) carrying a rotary plate ( ) suitable for supporting a wheel rim, a stationary hub ( C) disposed around the rotary shaft ( ), a bearing unit comprising at least one rolling bearing ( A, B) supporting the shaft as it rotates relative to the hub, the brake comprising a first series of at least one annular brake disk ( ) secured to the hub ( C) and a second series of at least one annular brake disk ( ) constrained to rotate with the shaft ( ) relative to the hub. The device includes first axial wall element ( ) and a second axial wall element.

Growing community of inventors

Longueil Ste Marie, France

Stéphane Vidal

Growing community of inventors

Longueil Ste Marie, France

St&eacute;phane Vidal

Stéphane Vidal