INFLATABLE SLEDGE Russian patent published in 2005 - IPC

FIELD: snow vehicles.

SUBSTANCE: proposed inflatable sledge consists of two parallel inflatable longitudinal members playing the part of runners and interconnected by raised cross inflatable members to form framework of sledge body to which elastic bottom is connected. Central inflatable longitudinal bottle is fastened on cross inflatable members inside framework. Height of bottle is not less than diameter of parallel inflatable longitudinal members and it is provided with device to change bottle height and with ratio made in form of longitudinal vertical elastic diaphragm arranged in center of cross section of central bottle and secured inside bottle of divide it into two, right-hand and left-hand, zones equal in perimeters of cross sections. Closed flat algebraic curve of Cassinian oval type with "waist" with horizontal axis and "waist" in vertical plane is formed in cross section of bottle. Distance between tops of oval along its horizontal axis exceeds diameter of central bottle without diaphragm. Distance between any points of oval located on one vertical is less than diameter of central bottle without diaphragm. Longitudinal support inflatable bottles of diameters smaller than diameter of longitudinal bottles of framework are fastened to inflatable longitudinal members inside body framework. Elastic bottom is detachably connected outside longitudinal and cross members of framework. According to second design version, central part of elastic bottom is raised to level of lower edge of diaphragm of central longitudinal inflatable bottle and is detachably connected in said zone to outer generatrix of central bottle by means of fastening units made in form of two rows of flexible braces. According to third design version, several additional longitudinal bottles are interconnected along generatrices and connected to longitudinal support inflatable bottles over entire length over elastic bottom under central inflatable bottle. Diameter of additional bottles does not exceed diameter of longitudinal support bottles.

EFFECT: universal design of sledge, enlarged sphere of application.

11 cl, 21 dwg