Eine Krankentransportvorrichtung (10) mit einer mit Handgriffen (11) versehenen Trage (12), die auf Rädern (13) angeordnet ist, wobei die Räder (13) einzeln und/oder paarweise höhenverstellbar angeordnet sind.

A vibration isolator (A) is mounted on a floor of an ambulance and includes a lower frame (2) movably mounted on the floor and an upper frame (4) vertically movably mounted on the lower frame via a link mechanism. The vibration isolator also includes a plurality of magnetic springs interposed between the upper and lower frames and each having a plurality of permanent magnets (14) with like magnetic poles opposed to each other. A vertical vibration of the upper frame is restrained by the plurality of magnetic springs, and the front side of the vibration isolator is lifted upon receipt of a forward acceleration.

The damping device comprises four identical articulated quadrilaterals disposed aligned coplanar in pairs, and each comprising a stretcher support table (2) and three bars (5, 8, 13), the shortest (5) of which, disposed opposite the stretcher support table (2), is hinged to the floor (1) at a point situated external to its own quadrilateral. Two corresponding bars (5 or 8) of one pair of coplanar quadrilaterals are connected together by a connecting rod (11), and one of said bars (8) is caused to rock by a pneumatic damping unit (22) by way of an intermediate element (13) provided with three hinges which are connected respectively to said rod (8), to a connecting rod connected to the table (2), and to the rod of the unit (22) which is itself hinged to the stretcher support table (2).

@ This invention relates to vibration damping supports and in particular to a suspension unit for a stretcher.

The stretcher support unit comprises a rectangular base frame (10) on which is supported, by means of a resilient support mechanism, a stretcher frame or carrier (11). The support mechanism comprises a pair of cantilever arms (20) inclined upwards in opposite directions and each pivotally mounted at its lower end on the base frame (10). The movements of the cantilever arms (20) are controlled by respective gas-liquid suspension units (30), which are mounted between the base frame (10) and an extension arm (28) of each cantilever arm (20). The suspension units comprise, in one embodiment, a gas reservoir (70), a sealed liquid reservoir (71), a flexible diaphragm (72) forming one end of the liquid reservoir and an actuator piston (73). This construction serves to damp the movements of the cantilever arms (20) and hence the stretcher mounted on the carrier (11), and also enable the height of the carrier to be varied between a loading position and a position in which the stretcher rides.

An ambulance car provided with a stretcher carrier, which is supported by a spring system with respect to the carriage work, said spring system comprising at least one hydropneumatic spring element (18,19) a liquid filled part (20) of which is connected to a pump (23) and is separated by a membrane (24) from a part (25) filled with a pressurized gas. Preferably the stretcher carrier (1) is supported by two pivotable rods (2,3) each one of said rods being connected to a hinge lever (8) and (9) respectively, while each one of said hinge levers is connected to the liquid filled cylindrical part 620b) of a spring element (18,19) by means of a connecting rod (14) bearing a piston 617) at the end thereof.

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.

A vibration isolator (A) is mounted on a floor of an ambulance and includes a lower frame (2) movably mounted on the floor and an upper frame (4) vertically movably mounted on the lower frame via a link mechanism. The vibration isolator also includes a plurality of magnetic springs interposed between the upper and lower frames and each having a plurality of permanent magnets (14) with like magnetic poles opposed to each other. A vertical vibration of the upper frame is restrained by the plurality of magnetic springs, and the front side of the vibration isolator is lifted upon receipt of a forward acceleration.

Eine Krankentransportvorrichtung (10) mit einer mit Handgriffen (11) versehenen Trage (12), die auf Rädern (13) angeordnet ist, wobei die Räder (13) einzeln und/oder paarweise höhenverstellbar angeordnet sind.