Abstract: The present invention relates to an arrangement in vehicle hydraulic service brake systems for activating at least one of two conventional braking cirucits included in the brake system when an obstacle is detected, by means of a sensor, in the direction in which the vehicle is travelling. The novel matter of the invention resides in that a pressure accumulator is connected to the brake circuit via a valve unit which is adapted, in normal position, to establish free communication between the vehicle main cylinder and the vehicle wheel brakes, and to permit pressure build-up of the pressure accumulator upon depression of the vehicle brake pedal. The sensor is adapted, upon actuation, to activate the valve unit, whereby the communication between the vehicle wheel brakes and the vehicle main cylinder is interrupted, and the pressure accumulator is connected with the wheel brakes for application thereof.

Abstract: A compressor of the rotary type is driven by a motor via a gear wheel arranged on the shaft of the compressor and cooperating with a gear wheel arranged on the shaft of the motor, the gear wheels and the shafts being enclosed in a gear housing. The motor is fastened to a detachable wall part of the gear housing, and the motor shaft is journalled solely in the bearings of the motor and protrudes into the gear housing through an opening in the wall part. The opening is provided with sealing means which prevent a medium from forcing its way out of the gear housing. The gear wheels are accessible for dismantling and assembly when the wall part together with the motor is detached from the rest of the gear housing.

Abstract: An edge-region heating device for use in the hot rolling of metallic strip after some cooling of the strip has occurred, employs an induction heater to preferentially raise the temperature of the edge-regions of the strip to compensate for the faster cooling of these edge regions whereby a more uniform temperature is obtained over the cross-section of the strip when a later hot rolling operation is performed.

Abstract: A rotor of self-supporting type for a turbo-machine. The rotor comprises a plurality of axially spaced discs which are interleaved with spacing rings and with the assembled combination of discs and rings held together by through bolts. Each spacing ring is provided on each opposed face with an annular shoulder which mates with a cooperating annular shoulder on an opposing face of an adjacent disc so as to prevent relative radial movement among the assembled discs and rings. A portion of each ring extends radially inwardly of its annular shoulders and is provided with a thickness in the axial direction which is less than the spacing between the opposing surfaces of the adjoining discs.