Tire building machinery
AssigneeDunlop Limited
InventorOtto Schmitt
Life of this patent
Estimating the term…
Abstract
A folding bag comprises an inflatable tube supported on a cylindrical support, the tube being secured on both sides to two cord ply arrangements consisting of at least two intersecting plies, the angle of intersection of the first cord ply arrangement being greater than that of the second cord ply arrangement. One end of the bag formed by the tube and the two cord ply arrangements terminating flush with one end of the support and being fixed relative to said end. The support side cord ply arrangement being restrained on the support at a predetermined distance from the support end, a restoring device being secured to the free end of the bag.
Claims18
A folding device comprising a folding bag which is inflatable from a flattened, cylindrical shape to a toroidal shape, and is supported at least partially on a cylindrical support, a first end of the bag lying substantially flush with one end of the support, the bag being secured to the support at a point adjacent said end at a point intermediate the ends of the bag, the bag comprising an endless flexible-walled tube being covered on its inner periphery by a first reinforcing layer and on its outer periphery by a second reinforcing layer, each of said reinforcing layers comprising two layers of oppositely disposed bias-cut cord plies, the bias angle of the cords of the plies of the first reinforcing layer being greater than that of the second reinforcing layer and a restoring device secured to the end of the bag remote from said first end.
A folding device comprising a folding bag which is inflatable from a flattened, cylindrical shape to a toroidal shape and is supported at least partially on a cylindrical support, a first end of the bag lying substantially flush with one end of the support, the bag being secured to the support at a point adjacent said end and at a point intermediate the ends of the bag, the bag comprising an endless flexible-walled tube having being covered on its inner periphery by a first reinforcing layer and on its outer periphery by a second reinforcing layer, each of said reinforcing layers comprising two oppositely disposed bias-cut cord plies, the bias angle of the plies of the first reinforcing layer being about 88.degree. and the bias angle of the plies of the second reinforcing layer being about 38.degree., and an elastic sleeve substantially coaxial with the bag and one end of which is attached to the free end of the bag.
Dependencies are inferred from the claim text.