fig1 shows an inflated floor 1 which is surrounded by a circumferentially extending air tube 2 forming a peripheral collar . the floor 1 can comprise a plurality of chambers and is formed of at least two parallel plies 3 , 4 which are connected to one another by spacer webbing 5 and are thus held parallel to one another with avoidance of bulges . the diameter of the circumferentially extending air tube 2 is more than twice as large as the height of the floor 1 . on the circumferentially extending air tube 2 there are supported upwardly arcuately curving air tubes which constitute the support elements 6 for a roof and wall structure . the support elements 6 can be connected by simple wall plies , provided if required with insulating layers . the support elements 6 bear holder 7 from which the closed capsule can be suspended and transported in a suspended condition . fig2 and 3 show plan view of the floor of two embodiments , the floor 1 in fig2 being -- as indicated -- formed for two persons and the floor 1 according to fig3 being formed for four persons . in both cases , the floor 1 is formed substantially rectangularly , with , however , sloping corners , so that in both cases a substantially hexagonal form of the floor 1 is produced . fig4 shows a plan view of another embodiment of the rescue capsule which is suitable for receiving three people . the bottom 1 &# 39 ; of this rescue capsule has a long end 8 and a narrow end 9 . two longitudinal sides 10 extend slightly inclined towards one another at first and , shortly before the narrow end 9 , form more strongly convergent sections 11 in order to provide the transition to the narrow end 9 . fig4 to 7 show that an arcuately shaped tube 12 forms the support for the sloping roof walls , which are formed of tarpaulins . the floor 1 &# 39 ; is , in the embodiments illustrated in fig4 to 7 , surrounded by a plurality of aid tubes 14 , 15 , 16 . the floor 1 &# 39 ; is -- as fig7 shows -- formed by two parallel plies 3 &# 39 ; 4 &# 39 ;, which are connected together by spacer webbing 5 &# 39 ;. the floor is pumped up with a relatively high pressure of 0 . 5 to 1 bar and is therefore made relatively hard . it is surrounded and retained by a first air tube 14 . the air tube 14 has a diameter which is relatively small but which forms a peripheral collar relative to the floor 1 &# 39 ;. on this first tube there is fixed a second tube 15 , which has the same dimensions and the same cross - section . the second tube 15 is connected to the tube 12 which is formed in a curve . the tubes 12 , 14 , 15 are pumped up with a relatively high pressure between 0 . 5 and 1 bar . the first tube 14 is surrounded by a third tube 16 having a substantially greater cross - sectional diameter , the part of the third tube 16 which projects beyond the first tube 14 extending downwardly and radially outwardly of the first tube 14 . the third tube 16 has a diameter which is at least twice that of the first tube 14 , but is pumped up with only a lower pressure of the order of magnitude of 0 . 01 to 0 . 1 bar . a downwardly convexly curved wall 17 , which terminates at the other side of the third tube 16 , forms a pressure free chamber 18 with the third tube and the floor 1 &# 39 ;. in order to ensure the convex curvature of the wall 17 , which due to lack of pressure in the chamber 18 has to be produced only by the weight of the flexible wall 17 or the preforming thereof , and to maintain it during the transportation of the rescue capsule , it may be suitable to provide a weight 19 , for example in the form of a lead chain , in the lower middlepoint of the flexible wall 17 . closely beneath the third tube 16 , the wall 17 has air outlet openings 20 , which enable a rapid escape of the air from the chamber 18 . further air outlet openings for the chamber 18 can be provided in the floor 1 &# 39 ;. if these air outlet openings 20 are not sufficient , additional air outlet openings can be provided . the stability of the rescue capsule illustrated in fig4 to 7 is produced exclusively by the strongly inflated tubes 14 , 15 , 12 and the similarly inflated floor 1 &# 39 ;. the third tube 16 , which together with the first tube 14 forms a double tube arrangement , serves for shock absorption in case the rescue capsule , hanging from the helicopter , intentionally or unintentionally falls from a small height ( max . about 3 m ) to the ground . this can happen unintentionally when the helicopter plunges as a result of air turbulence . the third tube 16 , with its relatively small pressure , is compressed or bent upwardly by the weight of the rescue capsule , so that the capsule finally comes to rest with the first peripheral tube 14 and the floor 1 &# 39 ; on the ground . the third tube 16 thus only has the function of damping an impact of the capsule on the ground . the shock - absorbing damping of the third tube 16 is further reinforced by the formation of a pressure - free air chamber 18 at the underside of the rescue capsule . the deposition of the capsule on the peripheral first tube 14 and the floor 1 &# 39 ; is slightly delayed by the air escaping from the chamber 18 through the air outlet openings 20 . any shape - defining reinforcement provided in the flexible wall 17 must in that case be so formed that it immediately deflects upwardly under the weight of the capsule and enables the flexible wall 17 to lie flat beneath the floor 1 &# 39 ; within the briefest time . the air outflow through the air outlet openings 20 must occur so quickly that the capsule is in fact shock - damped on reaching the ground , but not cushioned unstably so that it can tip over . the rescue capsule formed in accordance with fig4 to 7 thus allows an effective shock absorption even in the case of a non - vertical arrival of the capsule on the ground . the laterally protruding third tube 16 , which is pumped up with only a low pressure , ensures that a lateral impact of the rescue capsule is effectively damped , so that a safe transportation of the injured with the rescue capsule -- even in suspension under a helicopter -- is possible . the form of the floor 1 &# 39 ; of the rescue capsule apparent from fig4 makes possible the transportation of this capsule in an inflated condition on a truck , if this should be expedient . the shape of the capsule suggests that two people be arranged with their heads to the wide end 8 and one person be laid in the opposite direction on the floor 1 &# 39 ;. in each floor region , openings can be provided in the two plies 3 &# 39 ;, 4 &# 39 ; and in the spacer webbing 5 &# 39 ; in order to make possible the ventilation of the chamber 18 in the required and , if necessary load - dependent manner . if necessary , ventilation openings must be provided in the walls 13 . it is particularly effective if sick - beds , likewise formed of inflated spaced webbing , are laid on the floor 1 &# 39 ;. the shock - damping , effective for the injured , which is produced by the floor 1 &# 39 ; is still further improved by the sick - beds . this is particularly the case if , by a deposition of the rescue capsule on a ground from which pointed objects project , the floor 1 &# 39 ; should be partially damaged . the sick - beds can be formed so that , when provided in the right number for the particular rescue capsule , they form a complete second floor . it can be seen that the concept of the closed capsule for the transportation of injured people offers considerable advantages and completely new treatment possibilities . while the preferred application of the present invention has been shown and described , it should be apparent to those skilled in the art that many more modifications are possible without departing from the invention concept herein described . it is intended to cover in the appended claims all such modifications as fall within the true spirit and scope of the invention .
the invention concerns a new concept for the transportation of injured or stranded people and a new rescue capsule suitable for this purpose . the process involves the following stages . a capsule which can be closed on all sides , and which has an inflatable floor designed to form at least one bearing surface or litter for an injured person , and a roof and walls is first erected . one or more injured persons are placed in the capsule and installed in the litters . the injured person is secured in the capsule and then the capsule is carried away , together with the injured person , using a suspension fixture attached to the capsule .