Methods and apparatus for localized heating and deformation of glass sheets
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F27B-009/36
H05B-003/10
C03B-023/023
C03B-023/025
F27B-009/06
출원번호
US-0302586
(2011-11-22)
등록번호
US-8816252
(2014-08-26)
발명자
/ 주소
Bisson, Antoine G. D.
출원인 / 주소
Corning Incorporated
대리인 / 주소
Hardee, Ryan T.
인용정보
피인용 횟수 :
1인용 특허 :
12
초록▼
Methods and apparatus provide for: an electrically conductive heating element having a length extending in a lateral direction between first and second ends, and one or more output surfaces operating to direct heat therefrom in a direction transverse to the lateral direction; and a carrying structur
Methods and apparatus provide for: an electrically conductive heating element having a length extending in a lateral direction between first and second ends, and one or more output surfaces operating to direct heat therefrom in a direction transverse to the lateral direction; and a carrying structure operable to support a glass sheet such that a major surface of the glass sheet is oriented towards the heat emanating from the one or more output surfaces of the heating element, where the electrically conductive heating element includes at least one heat flux variation feature operating to produce differing magnitudes of heat to emanate from at least two of the output surfaces of the heating element.
대표청구항▼
1. An apparatus, comprising: a single, continuous electrically conductive heating element having a length extending in a lateral direction between first and second ends, and one or more output surfaces operating to direct heat therefrom in a direction transverse to the lateral direction; anda carryi
1. An apparatus, comprising: a single, continuous electrically conductive heating element having a length extending in a lateral direction between first and second ends, and one or more output surfaces operating to direct heat therefrom in a direction transverse to the lateral direction; anda carrying structure operable to support a glass sheet such that a major surface of the glass sheet is oriented towards the heat emanating from the one or more output surfaces of the heating element,wherein the electrically conductive heating element includes at least one heat variation feature operating to produce differing magnitudes of heat to emanate from at least two of the output surfaces of the heating element. 2. The apparatus of claim 1, wherein the at least one heat variation feature operates to produce a differing magnitude of heat to emanate from the output surfaces of the heating element located at at least one of the first and second ends thereof as compared with one or more output surfaces located intermediate thereto. 3. The apparatus of claim 2, wherein the at least one heat variation feature operates to produce higher magnitude heat emanating from the output surfaces located at the first and second ends as compared with intermediate positions. 4. The apparatus of claim 3, wherein: the length of the heating element is sufficient to span an entire length of the glass sheet; andthe carrying structure operates to orient respective first and second edge regions of the major surface of the glass sheet towards the heat emanating from the first and second ends of the heating element,wherein the apparatus operates to heat the first and second edge regions of the glass sheet to higher temperatures than intermediate regions of the glass sheet. 5. The apparatus of claim 1, wherein the heating element is formed from an electrically conductive ceramic material. 6. The apparatus of claim 5, wherein the electrically conductive ceramic material is taken from the group consisting of silicon carbide and disilicide molybdenum, and titanium diboride. 7. The apparatus of claim 1, wherein: the heating element includes a height dimension, which is transverse to the length and extends in a direction generally normal to a plane of the major surface of the glass sheet; andthe at least one heat variation feature includes that the height dimension varies between the first and second ends of the heating element, such that the differing magnitudes of heat emanate from the output surfaces of the heating element in response to current flowing through the heating element in the lateral direction. 8. The apparatus of claim 7, wherein the at least one heat variation feature operates to produce a differing magnitude of heat to emanate from the output surfaces of the heating element located at at least one of the first and second ends thereof as compared with one or more output surfaces located intermediate thereto. 9. The apparatus of claim 8, wherein the at least one heat variation feature operates to produce higher magnitude heat emanating from the output surfaces located at the first and second ends as compared with intermediate positions. 10. The apparatus of claim 9, wherein: the length of the heating element is sufficient to span an entire length of the glass sheet; andthe carrying structure operates to orient respective first and second edge regions of the major surface of the glass sheet towards the heat emanating from the first and second ends of the heating element,wherein the apparatus operates to heat the first and second edge regions of the glass sheet to higher temperatures than intermediate regions of the glass sheet. 11. The apparatus of claim 1, wherein: the heating element includes a width dimension, which is transverse to the length and extends in a direction generally parallel to a plane of the major surface of the glass sheet; andthe at least one heat variation feature includes that the width dimension varies between the first and second ends of the heating element, such that the differing magnitudes of heat emanate from the output surfaces of the heating element in response to current flowing through the heating element in the lateral direction. 12. The apparatus of claim 11, wherein the at least one heat variation feature operates to produce a differing magnitude of heat to emanate from the output surfaces of the heating element located at at least one of the first and second ends thereof as compared with one or more output surfaces located intermediate thereto. 13. The apparatus of claim 12, wherein the at least one heat variation feature operates to produce higher magnitude heat emanating from the output surfaces located at the first and second ends as compared with intermediate positions. 14. The apparatus of claim 13, wherein: the length of the heating element is sufficient to span an entire length of the glass sheet; andthe carrying structure operates to orient respective first and second edge regions of the major surface of the glass sheet towards the heat emanating from the first and second ends of the heating element,wherein the apparatus operates to heat the first and second edge regions of the glass sheet to higher temperatures than intermediate regions of the glass sheet. 15. The apparatus of claim 1, wherein: the output surfaces of the heating element include respective surface area portions, which extend in directions generally parallel to a plane of the major surface of the glass sheet; andthe at least one heat variation feature includes that respective surface area portions vary in size between the first and second ends of the heating element, such that the differing magnitudes of heat emanate from the output surfaces of the heating element in response to current flowing through the heating element in the lateral direction. 16. The apparatus of claim 15, wherein the at least one heat variation feature operates to produce a differing magnitude of heat to emanate from the output surfaces of the heating element located at at least one of the first and second ends thereof as compared with one or more output surfaces located intermediate thereto. 17. The apparatus of claim 16, wherein the at least one heat variation feature operates to produce higher magnitude heat emanating from the output surfaces located at the first and second ends as compared with intermediate positions. 18. The apparatus of claim 17, wherein: the length of the heating element is sufficient to span an entire length of the glass sheet; andthe carrying structure operates to orient respective first and second edge regions of the major surface of the glass sheet towards the heat emanating from the first and second ends of the heating element,wherein the apparatus operates to heat the first and second edge regions of the glass sheet to higher temperatures than intermediate regions of the glass sheet. 19. The apparatus of claim 1, wherein: the heating element includes a cross-sectional area dimension, which is transverse to the length and extends in a directions generally normal to the lateral direction; andthe at least one heat variation feature includes that the cross-sectional area dimension varies between the first and second ends of the heating element, such that the differing magnitudes of heat emanate from the output surfaces of the heating element in response to current flowing through the heating element in the lateral direction. 20. The apparatus of claim 19, wherein the at least one heat variation feature operates to produce a differing magnitude of heat to emanate from the output surfaces of the heating element located at at least one of the first and second ends thereof as compared with one or more output surfaces located intermediate thereto. 21. The apparatus of claim 20, wherein the at least one heat variation feature operates to produce higher magnitude heat emanating from the output surfaces located at the first and second ends as compared with intermediate positions. 22. The apparatus of claim 21, wherein: the length of the heating element is sufficient to span an entire length of the glass sheet; andthe carrying structure operates to orient respective first and second edge regions of the major surface of the glass sheet towards the heat emanating from the first and second ends of the heating element,wherein the apparatus operates to heat the first and second edge regions of the glass sheet to higher temperatures than intermediate regions of the glass sheet.
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