Electrical heating device
First Claim
1. An electrical heating device comprisingan elongated conductor,a semi-conductor pattern electrically connected to and extending from said conductor, andelectrically insulating sealing layers on top of and below said conductor and said semi-conductor pattern,said device being characterized in that:
- said conductor comprises a pair of rectangular in cross-section metallic conductor elements, placed one on top of the other in face-to-face engagement with and unattached to each other, the bottom one of said conductor elements facing towards one of said sealing layers and the upper one of said conductor elements facing towards and engaging the other of said sealing layers,the upper one of said conductor elements adjacent an end of said device is folded back longitudinally upon itself to expose an upper surface of the lower one of said conductor elements and a lower surface of the upper one of said conductor elements, anda wire engages and is electrically connected to at least one of the thus exposed upper surface of said lower one of said conductor elements and the thus exposed lower surface of said upper one of said conductor elements.
3 Assignments
0 Petitions
Accused Products
Abstract
An electrical heating device comprises a substrate, an elongated conductor extending longitudinally of the substrate, a semi-conductor pattern carried on the substrate and electrically connected to and extending from the conductor pair, and a sealing layer overlying the conductor and sealed to the substrate at opposite sides of the conductor. The conductor comprises a pair of rectangular in cross-section metallic conductor elements, placed one on top of the other in face-to-face engagement with and unattached to each other. The bottom conductor elements faces towards the substrate and the upper conductor elements faces towards and engaging the sealing layer. Adjacent one end of the device, the upper conductor elements is folded back longitudinally upon itself to expose an upper surface of the lower conductor element and a lower surface of the upper conductor element, and wherein a wire engages and is electrically connected to the thus exposed upper surface of said lower conductor element and the thus exposed lower surface of said upper conductor element.
48 Citations
14 Claims
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1. An electrical heating device comprising
an elongated conductor, a semi-conductor pattern electrically connected to and extending from said conductor, and electrically insulating sealing layers on top of and below said conductor and said semi-conductor pattern, said device being characterized in that: -
said conductor comprises a pair of rectangular in cross-section metallic conductor elements, placed one on top of the other in face-to-face engagement with and unattached to each other, the bottom one of said conductor elements facing towards one of said sealing layers and the upper one of said conductor elements facing towards and engaging the other of said sealing layers, the upper one of said conductor elements adjacent an end of said device is folded back longitudinally upon itself to expose an upper surface of the lower one of said conductor elements and a lower surface of the upper one of said conductor elements, and a wire engages and is electrically connected to at least one of the thus exposed upper surface of said lower one of said conductor elements and the thus exposed lower surface of said upper one of said conductor elements. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An electrical heating device comprising
an elongated conductor, a semi-conductor pattern electrically connected to and extending from said conductor, and electrically insulating sealing layers on top of and below said conductor and said semi-conductor pattern, said device being characterized in that: -
said conductor comprises a pair of rectangular in cross-section metallic conductor elements, placed one on top of the other in face-to-face engagement with and unattached to each other, the bottom one of said conductor elements facing towards one of said sealing layers and the upper one of said conductor elements facing towards and engaging the other of said sealing layers, the upper one of said conductor elements adjacent an end of said device is folded back longitudinally upon itself to expose an upper surface of the lower one of said conductor elements and a lower surface of the upper one of said conductor elements, a wire engages and is electrically connected to at least one of the thus exposed upper surface of said lower one of said conductor elements and the thus exposed lower surface of said upper one of said conductor elements, portions of said sealing layers adjacent said end of said device and at each side of said conductor are removed to provide cut out areas one edge of each of which is closely adjacent a side of said conductor, thereby facilitating folding-back of the portion of said upper one of said conductor elements intermediate said cut-out areas. - View Dependent Claims (10)
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11. An electrical heating device comprising
an electrically insulating substrate, an elongated conductor extending longitudinally of said substrate, a semi-conductor pattern carried on said substrate and electrically connected to and extending from said conductor and, electrically insulating sealing layers on top of and below said conductor and sealed to each other at opposite sides of said conductor, said device being characterized in that: -
said conductor comprises a pair of rectangular in cross-section metallic conductor elements, placed one on top of the other in face-to-face engagement with and unattached to each other, the bottom one of said conductor elements facing towards said substrate and the upper one of said conductor elements facing towards and engaging said sealing layer, said sealing layers extend longitudinally of said device beyond at least one end of said substrate and are sealed to each other in the area between said one end and the adjacent end of said device, said conductor extends from said substrate through said area to said adjacent end of said device, and the upper one of said conductor elements adjacent said adjacent end is folded back longitudinally upon itself to expose an upper surface of the lower one of said conductor elements and a lower surface of the upper one of said conductor elements, and a wire engages and is electrically connected to at least one of the thus exposed upper surface of said lower one of said conductor elements and the thus exposed lower surface of said upper one of said conductor elements. - View Dependent Claims (12)
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13. An electrical heating device comprising
an electrically insulating substrate, an elongated conductor extending longitudinally of said substrate, a semi-conductor pattern carried on said substrate and electrically connected to and extending from said conductor, and electrically insulating sealing layers on top of and below said conductor, said device being characterized in that: -
said conductor comprises a pair of rectangular in cross-section metallic conductor elements, placed one on top of the other in face-to-face engagement with and unattached to each other, the bottom one of said conductor elements facing towards said substrate and the upper one of said conductor elements facing towards and engaging said sealing layer, said sealing layers extend longitudinally of said device beyond at least one end of said substrate and are sealed to each other in the area between said one end and the adjacent end of said device, said conductor extends from said substrate through said area to said adjacent end of said device, and portions of said sealing layers adjacent said adjacent end of said device are removed to provide cut-out areas one edge of each of which is closely adjacent a side of said conductor, thereby facilitating folding-back of the portion of said upper one of said conductor elements intermediate said cut-out areas. - View Dependent Claims (14)
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Specification