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US 4,470,785 AGranted
Method and device for moulding a tire for a wheel rim
OwnerArie Koorevaarinventor
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OwnerArie Koorevaarinventor
Estimating the term…
The invention relates to apparatus for moulding a tire for a wheel rim by means of a mould having mould parts, said mould parts being movable between a closed working position in which they enclose a mould cavity with the shape of the tire and an open position in which said mould parts are spaced apart, wherein in the open position of the mould parts a hollow tire core is positioned in the mould cavity while being receivable with respect to said parts, wherein the mould parts are moved into the working position, in which a residual cavity not occupied by the tire core is left free in the mould cavity, said mould defining the residual cavity being adapted to receive synthetic resin foam for moulding a tire body. Preferably the tire core is arranged on the wheel rim before being positioned with respect to the mould parts.
A device for moulding a tire having a hollow, synthetic resin core of toroidal form and a covering of foamed, synthetic resinous material of generally crescent-shaped radial cross section thereon, said device comprising at least a pair of mould parts and means for moving said mould parts between an open position and a closed position, said mould parts having interior surfaces defining a tire mould cavity and including means for locating a synthetic resin tire core within said tire mould cavity to fill such cavity except for a generally crescent-shaped radial cross section residual cavity thereof defined between said tire core and said inner surfaces of the mould parts, and means for introducing synthetic resin foam material into said residual cavity to fill same and form a tire comprising said tire core and said covering.
Dependencies are inferred from the claim text.