US 4,208,562 A · Cavity feed system

Abstract

A system for feeding electromagnetic energy into a cavity for heating material contained therein includes a radiator of the electromagnetic energy and a motorized support for carrying the radiator within the cavity by the material. The radiator is constructed of a material such as alumina providing a much shorter wavelength than that existing in the environment surrounding the material to permit the radiator to have a sufficiently small size to be inserted within the cavity. Heat may also be provided by directly heating the walls of the cavity in which case the radiator is provided with a taper for directing the electromagnetic energy into the thicker portions of the material so that all portions of the material are heated at a uniform rate. The feed system includes a support for a bladder which is useful in urging uncured rubber of a tire casing against the interior surface of the cavity for forming a rubber tire.

Claims5

Dependent claims

A system for applying radiant energy to a material having a cavity therein comprising:

a radiator of said energy;
means for transporting said radiator within said cavity past said material, said transporting means including means for guiding said energy from a point outside said cavity to an interior point of said cavity, said transporting means further including means for coupling the energy from said guiding means to the interior of said radiator;
and wherein
said radiator is formed of an elongated dielectric member for guiding said energy, within said member, from said coupling means to a radiating aperture of said radiator, the permittivity of said dielectric member being greater than the permittivity of said cavity for reducing the wavelength of radiation within said member as compared to such wavelength in said cavity, a cross-sectional dimension of said member being correspondingly reduced to facilitate the entry of said radiator into said cavity.

1 more element

Dependencies are inferred from the claim text.

Cavity feed system

Life of this patent

Cavity feed system

Life of this patent

Abstract

Claims5