Apparatus for heating substrate having electrically-conductive and non-electrically-conductive portions
AssigneeEssex Specialty Products, Inc.
InventorsCurtis L. Volkmann, Frederick A. Buck
Life of this patent
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Abstract
An apparatus includes (a) a device which is capable of selectively generating heat in electrically-conductive material without substantially generating heat in non-electrically-conductive material, (b) a device capable of heating non-electrically-conductive material, and (c) an insulating shield between the two devices to help focus the energy generated by at least one of the devices.
Claims26
An apparatus for heating a substrate having an electrically-conductive portion and a non-electrically-conductive portion, comprising:
- (a) a first device capable of selectively generating heat in the electrically-conductive portion without substantially generating heat in the non-electrically-conductive portion,
- (b) a second device capable of heating the non-electrically-conductive portion,
- (c) an insulating shield between the first and second devices to help focus the energy generated by at least one of the devices to the substrate, and
- (d) means for holding the first and second devices and the insulating shield together, the apparatus having a heat-directed front side so that the substrate may be heated by the apparatus when placed outside the apparatus at the heat-directed front side of the apparatus.
An apparatus having a heat-directed side, the apparatus for heating a substrate having an electrically-conductive portion and a non-electrically-conductive portion, the apparatus comprising:
- (a) a first device capable of selectively generating heat in the electrically-conductive portion without substantially generating heat in the non-electrically-conductive portion,
- (b) a second device capable of heating the non-electrically-conductive portion, the second device having two opposite sides which are perpendicular to the heat-directed side,
- (c) an insulating shield between the first and second devices to help focus the energy generated by at least one of the devices to the substrate, the insulating shield being located on the two opposite sides of the second device extending beyond the second device in the direction of the heat-directed side creating a channel adjacent the second device in the direction of the heat-directed side, and
- (d) means for holding the first and second devices and the insulating shield together.
An apparatus for heating a substrate having an electrically-conductive portion and a non-electrically-conductive portion, comprising:
- (a) a first device, wherein the first device is a two-pass induction coil,
- (b) a second device placed between the two passes of the induction coil, the second device being capable of heating the non-electrically-conductive portion,
- (c) an insulating shield between the first and second devices to help focus the energy generated by at least one of the devices to the substrate, and
- (d) means for holding the first and second devices and the insulating shield together.
A heating apparatus having a heat-directed side for heating a substrate having an electrically-conductive portion, a non-electrically-conductive portion, and an adhesive therebetween, the apparatus comprising:
- (a) an induction coil having at least two passes,
- (b) a non-induction heating device capable of heating the non-electrically-conductive portion, the non-induction heating device being positioned between the at least two passes of the induction coil,
- (c) an insulating shield between the at least two passes of the induction coil and the non-induction heating device to help focus the energy generated by at least one of either the induction coil or the non-induction heating device to the substrate,
- (d) a focusing shield adjacent each side of the at least two passes of the induction coil opposite the non-induction heating device and adjacent each side of the at least two passes of the induction coil opposite the heat-directed side to assist in focusing the induction field created by the induction heating device to the substrate, and
- (e) means for holding the induction coil, the non-induction heating device, the insulating shield and the focusing shield together.
A heating apparatus having a heat-directed side for heating a substrate having an electrically-conductive portion and a non-electrically-conductive portion, the apparatus comprising:
- (a) a low-frequency induction heating device,
- (b) a high-frequency heating device capable of being operated at a frequency at least about five times greater than the frequency at which the low-frequency induction heating device is capable of operating,
- (c) an insulating shield between the heating devices to help focus the energy generated by either of the heating devices to the substrate,
- (d) a focusing shield adjacent each side of at least one of the heating devices which is opposite the other heating device and adjacent each side of the at least one of the heating devices which is opposite the heat-directed side, the focusing shield to assist in focusing the field created by the at least one of the heating devices to the substrate, and
- (e) means for holding the heating devices, the insulating shield and the focusing shield together.
Dependencies are inferred from the claim text.