Abstract: A system for optimal space utilization by using at least one raisable and lowerable berth. The at least one berth can be raised to a storage or day position and lowered to a service or night position by a driving motor operatively connected to the berth. The position of the berth is essentially horizontal in the storage as well as the service position. The berth is provided with guiding bodies for movable engagement along essentially vertical guide rails fastened adjacent to limiting walls of the compartment in question. The guide rails can also be a part of the bearing structure of the compartment. Below the berth there are arranged at least one permanently mounted, pivotable chair capable of being stowed and/or put down in a position to free the necessary space for lowering the berth to the night position.

Abstract: Patient litter apparatus adapted for use in an air-ambulance operable to permit elevating and lowering the litter and patient while maintaining the litter in a horizontal position at all times and with provisions for locking the apparatus with the litter at a selected position of elevation, and further with provisions for attenuating a large scale force, such as that created by a down-crash of the air-ambulance, to thereby reduce the risk of injury to the patient and preserve the structural integrity of the apparatus.