Abstract: An emergency-operation valve block includes: a drive port for hydraulically connecting the valve block to an emergency drive of a mobile crane, at least two drive mechanism ports for hydraulically connecting the valve block to one drive mechanism of the mobile crane each, at least two closing valves which are assigned to one of the drive mechanism ports each and designed to selectively open or close a hydraulic connection between the drive port and the drive mechanism port respectively assigned to it, and an actuation valve which is designed to selectively reverse the hydraulic connection between a pressure side and return side of the drive port and corresponding sides of the drive mechanism ports. A mobile crane may include such an emergency-operation valve block.

Abstract: A drying device for drying intake air fed to a compressed-air system of a vehicle includes a cooling device connected downstream of a compressor in an intake air flow path and draws off heat from the intake air coming from the compressor, a desiccant container connected downstream of the cooling device in the intake air flow path and comprising an adsorbent for removing water from the intake air flowing through the desiccant container, and a regeneration container connected downstream of the desiccant container in the intake air flow path and configured to receive a first portion of the intake air coming from the desiccant container and, as required, returns it to the desiccant container and which feeds heat, drawn off by the cooling device, to the received intake air.

Abstract: Kindly replace the originally filed Abstract with the substitute Abstract shown below: A drying device for drying intake air fed to a compressed-air system of a vehicle includes a cooling device connected downstream of a compressor in an intake air flow path and draws off heat from the intake air coming from the compressor, a desiccant container connected downstream of the cooling device in the intake air flow path and comprising an adsorbent for removing water from the intake air flowing through the desiccant container, and a regeneration container connected downstream of the desiccant container in the intake air flow path and configured to receive a first portion of the intake air coming from the desiccant container and, as required, returns it to the desiccant container and which feeds heat, drawn off by the cooling device, to the received intake air.