Flexible heating element
First Claim
1. A surface-heating element for a curved surface comprising:
- a continuous, planar conductor arranged along a longitudinal axis including a plurality of turns connected by regions being generally transverse to the longitudinal axis, the conductor including end portions each having a terminal for receiving electrical current; and
a film applied to one side of said conductor and configured to substantially follow a contour of said conductor, said film and conductor forming a continuous web generally centered about said longitudinal axis, and wherein at least one turn connecting two generally transverse regions extends beyond said continuous web.
2 Assignments
0 Petitions
Accused Products
Abstract
A surface-heating element for a curved surface and method of producing a heating element is provided. The heating element includes a continuous, planar conductor arranged along a longitudinal axis including a plurality of turns connected by regions being generally transverse to the longitudinal axis. The conductor including end portions each having a terminal for receiving electrical current. The heating element also includes a film applied to one side of the conductor and configured to substantially follow an outer contour of the conductor. The film and the conductor form a continuous web generally centered about the longitudinal axis, and at least one turn connecting two generally transverse regions extends beyond the continuous web. The heating element may also include an adhesive layer on the other side of the heating element sealingly engaging the film.
44 Citations
19 Claims
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1. A surface-heating element for a curved surface comprising:
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a continuous, planar conductor arranged along a longitudinal axis including a plurality of turns connected by regions being generally transverse to the longitudinal axis, the conductor including end portions each having a terminal for receiving electrical current; and
a film applied to one side of said conductor and configured to substantially follow a contour of said conductor, said film and conductor forming a continuous web generally centered about said longitudinal axis, and wherein at least one turn connecting two generally transverse regions extends beyond said continuous web. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A surface-heating element for a curved surface comprising;
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a continuous, planar conductor arranged along a longitudinal axis including a plurality of turns connected by regions being generally transverse to the longitudinal axis, the conductor including end portions each having a terminal for receiving electrical current;
a moisture-resistant film sealing one side of said conductor and configured to substantially follow an outer contour of said conductor; and
an adhesive layer applied to another side of said conductor, said adhesive layer and said film sealingly engaging each other about said conductor, said film, conductor and adhesive layer forming a continuous web generally centered about said longitudinal axis, and wherein at least one turn connecting two generally transverse regions extends beyond said continuous web. - View Dependent Claims (10, 11)
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12. A surface-heating element for a curved surface comprising:
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a continuous, planar conductor arranged along a longitudinal axis including a plurality of turns connected by regions being generally transverse to the longitudinal axis, the conductor including end portions each having a terminal for receiving electrical current;
a moisture-resistant film sealing one side of said conductor and configured to substantially follow an outer contour of said conductor; and
an adhesive layer applied to another side of said conductor, said adhesive layer and said film sealingly engaging each other about said conductor, said film, conductor and adhesive layer forming a continuous web generally centered about said longitudinal axis, and wherein at least one turn connecting two generally transverse regions extends beyond said continuous web, and wherein said transverse regions vary in length and said continuous web is approximately equal in width to a shortest transverse region.
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13. A method of producing a surface-heating element for a curved surface comprising;
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providing a conductive foil blank;
forming a continuous conductor in said blank, said conductor being arranged along a longitudinal axis and including a plurality of turns connected by regions being generally transverse to the longitudinal axis, at least one of said turns including a web connecting said conductor to said blank;
applying a film to one side of said conductor;
cutting said blank from said conductor; and
cutting said film to substantially follow an outer contour of said conductor and maintain a continuous web generally centered about said longitudinal axis, and wherein at least one turn connecting two generally transverse regions extends beyond said continuous web. - View Dependent Claims (14, 15)
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16. A method of producing a surface-heating element for a curved surface comprising:
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providing a conductive foil blank;
forming a continuous conductor in said blank, said conductor being arranged along a longitudinal axis and including a plurality of turns connected by regions being generally transverse to the longitudinal axis, at least one of said turns including a web connecting said conductor to said blank;
applying a film to one side of said conductor;
applying an adhesive layer to another side of said conductor and contacting said film to sealingly engage said film about said conductor;
cutting said blank from said conductor; and
cutting said film and adhesive layer to substantially follow an outer contour of said conductor and maintain a continuous web generally centered about said longitudinal axis, and wherein at least one turn connecting two generally transverse regions extends beyond said continuous web. - View Dependent Claims (17, 18, 19)
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Specification