Vulcanization of tires by imparting heat from the inside
AssigneeSedepro
InventorDaniel Laurent
Life of this patent
Estimating the term…
Abstract
An apparatus and method for heating and stirring a charge of a heat-exchange fluid under pressure for the curing of tires in which both a turbine and an electric motor for driving the turbine are enclosed within a fluid-tight enclosure and in which the turbine and the rotor and stator of the electric motor are entirely immersed within the heat-exchange fluid.
Claims12
A unit for using a tire including means for heating and stirring a charge of a heat-exchange fluid under pressure, for the curing of the tire, the heating and stirring means comprising a fluid-tight enclosure containing said fluid and including a central zone for the free passage of said fluid, a turbine and an electric motor for driving the turbine, said turbine and said electric motor, including both the rotor and the stator of the electric motor, being enclosed in the fluid-tight enclosure containing said fluid, the turbine being located in said central zone, and means mounting the stator within the fluid-tight enclosure and in operative relation to the rotor such that the heat exchange fluid is at least partly reheated due to heat losses from both the rotor and stator of said electric motor.
A process for the vulcanizing of a tire comprising imparting heat to the tire from the inside of the tire by causing a heat-exchange fluid to circulate in the inner cavity of the tire by means of a turbine driven by an electric motor, the rotor and the stator of said electric motor being mounted entirely immersed by the heat exchange fluid, the turbine being located in a flow passage in a central zone of the cavity and reheating said heat-exchange fluid at least in part due to heat losses from both the rotor and the stator of said electric motor.
An apparatus for using a tire including means for heating and stirring a heat-exchange fluid under pressure for the curing of the tire, the heating stirring means comprising a fluid-tight enclosure defined in part by a pair of walls, at least one of which is movable relative to the other, a hollow shaft extending into a central zone of the enclosure from one of the walls, an axially movable rod extending through the said one wall and hollow shaft to the opposite wall for the movement of said opposite wall relative to the said one wall, a turbine mounted for rotation on said hollow shaft, an electric motor having a rotor and stator within said enclosure, a support mounted to one of the walls for mounting the stator in operative relation to the rotor and within the enclosure, such that the heat exchange fluid is at least partly reheated due to heat losses from both the rotor and stator of said electric motor, a sleeve rotatably mounted on the hollow shaft for accommodating the turbine and seals between the said one wall and the axially movable rod, and an hermetic electrical connection which supplies power to the electric motor.
Dependencies are inferred from the claim text.