Sab Wabco Ab

Faiveley Transport Nordic Ab

Fred Emilsson

Johan Nyman

Per Walter

Johan Martensson, Legal Representative

Ulla Melin Emilsson, Legal Representative

A brake unit, preferably for a rail vehicle, including in a housing: a piston, and a push rod in the form of a spindle in an axial slack adjuster. The axial directions of the piston and the push rod are substantially perpendicular to each other, and means are provided for force transmission between these parts. The force transmitting means includes wedge elements at the underside of the piston cooperating with a driver element coaxial with and force-transmittingly connected to the spindle. The driver element is supported with rolling friction by the housing for movements in the axial direction of the spindle, and the spindle is axially guided by the housing at its forward end.

Rail vehicle brake unit

A rail vehicle brake slack adjuster comprises an axially movable, sleeve-shaped driver element () adapted to receive an axially applied braking force in a brake application direction, a spindle () axially movable within the driver element, an adjuster nut () in non-self-locking thread engagement with the spindle, clutch means between the driver element and the adjuster nut, and a barrel spring () biasing the spindle in the brake application direction. The adjuster has a combination of a first clutch () comprising a clutch surface on the driver element () directed in the brake application direction and a corresponding clutch surface on the adjuster nut () and a second clutch () comprising a clutch surface on the driver element () directed in the direction opposite to the brake application direction and a corresponding clutch surface on an adjuster nut sleeve (). The adjuster nut sleeve () is axially movable on the adjuster nut ().

Rail vehicle brake slack adjuster

A disc brake caliper for a rail vehicle comprises brake pad holders suspended&#x2014;at either side of a brake disc to be braked&#x2014;for movements only in a plane perpendicular to a substantially horizontal center-line of the caliper. Members of the caliper for transmitting movements from a brake unit to the brake pad holders are suspended from the vehicle via only elements of rubber-elastic material in an elastic joint allowing movements to a certain extent of said members in all directions. The elastic joint comprises at least one plate-shaped rubber-elastic element, which is substantially horizontally mounted in compression between a part for attachment to the vehicle and one of said members of the caliper.

Disc brake caliper

A rail vehicle bogie brake has a brake beam ( ). Which at its end is provided with a brake block holder ( ) having a brake block ( ) for brake application against a tread of a wheel. The brake block holder has a transverse cylinder ( ) for its pivotable connection with the brake beam. A mounting shaft ( ) is attached in the end of the brake beam and is provided with a sleeve ( ). The sleeve engages the mounting shaft and has an outer diameter corresponding to the inner diameter of the cylinder. A sleeve plate ( ) is held against the sleeve, which is slightly longer than the cylinder, by means of screws ( ) attached in the mounting shaft and prestressing the sleeve.

Block holder for a bogie brake

In a sealing arrangement between a tubular housing (2) and a rod (1) in a rail vehicle slack adjuster, a cup (3) is movable with the rod and extends along the rod over the free end of the housing. A sealing arrangement (6-9) is in sealing engagement with the housing (2). It comprises flange-like portions (6', 7), extending into close proximity with the inner wall of the cup for forming a labyrinth seal, and a sealing lip (9') in sealing contact with the end of the cup for preventing the intrusion of water and the like in the cup.

Sealing arrangement for a rail vehicle slack adjuster

A tread brake unit for applying a brake block (3) against the tread of a rail vehicle wheel comprises a pneumatic cylinder (1) having a piston (9) with a piston rod (11). A block holder (2) for the brake block is pivotably connected to the piston rod by a pivot sleeve (19) rotatably attached in the end of the piston rod facing the block holder, which is provided with a circular surface (25) for engagement with the pivot sleeve, a structure (20, 22, 23) being provided for keeping the block holder connected to the pivot sleeve.

Growing community of inventors

Trelleborg, Sweden

Fred Emilsson