Abstract: The disclosure relates to a vacuum lifting arrangement comprising a vacuum pump, a valve arrangement, a support structure, and a flexible lifting tube comprising a suction foot. The vacuum pump is connected to the valve arrangement and to the flexible lifting tube. The valve arrangement is arranged to extend and retract the flexible lifting tube. The valve arrangement is arranged separate from the suction foot, between the vacuum pump and the suction foot. The disclosure also relates to a method of providing a vacuum lifting arrangement.

Abstract: The disclosure relates to a vacuum lifting arrangement comprising a vacuum pump, a valve arrangement, a support structure, and a flexible lifting tube comprising a suction foot. The vacuum pump is connected to the valve arrangement and to the flexible lifting tube. The valve arrangement is arranged to extend and retract the flexible lifting tube. The valve arrangement is arranged separate from the suction foot, between the vacuum pump and the suction foot. The disclosure also relates to a method of providing a vacuum lifting arrangement.

Abstract: The refueling vehicle routing system can use a refueling vehicle routing application to compute a set of fuel delivery routes for a fleet of refueling vehicles for multiple different target vehicles to be serviced via cooperating with a refueling scenario simulator. The refueling scenario simulator can run scenarios of different sets of refueling routes to refuel target vehicles in light of an available set of assets, and then the application can supply results of how the versions of the set of refueling routes for the fleet of refueling vehicles are going to satisfy anticipated refueling needs for the target vehicles; to indicate any refueling stops that could be late, early, and/or missed entirely, for a service window of time; as well as to show a measure of how cost effective each of the refueling routes are at the satisfying of the needs for the target vehicles.

Abstract: A locking device for two parts, mutually displaceable telescopically, e.g. a rod glidable in an outer tube, and including a washer with resilient serrations or teeth bent slopingly upwards out of the plane of the washer, which is retained in one part while its teeth engage the other part. An operating means is adapted for urging an annular lifting means into engagement with the teeth on actuation in one direction, so that the teeth are deflected out of engagement, allowing free movement between the parts, until they regain their engagement when the operating means is moved in the opposite direction.