Wiper blade, in particular for a motor vehicle
AssigneeRobert Bosch GmbH
InventorsHelmut Depondt, Mathijs Sinnaeve
Life of this patent
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Abstract
A wiper blade (10), in particular for a motor vehicle, is proposed. This comprises a wiping bar (12) and a heating element (32). According to the invention, the heating element (32) is self-regulating.
Claims20
A wiper blade (10) comprising a wiping strip (12) and a heating element (32), characterized in that the heating element (32) is self-regulating, such that when a temperature of the heating element (32) increases, a heat power from the heating element (32) is configured to decrease, wherein the heating element (32) comprises a self-regulating semiconductor matrix (38), wherein the semiconductor matrix (38) includes a plurality of carbon particles embedded in a piece of plastic, and wherein the piece of plastic is configured to expand when heated, such that the carbon particles become separated apart farther from one another.
A wiper blade (10) comprising a wiping strip (12) and a heating element (32), characterized in that the heating element (32) is self-regulating, such that when a temperature of the heating element (32) increases, a heat power from the heating element (32) is configured to decrease, wherein an end cap (18) is provided at both ends of a longitudinal extension of the wiper blade (10) and the heating element (32) is insulated in a longitudinal direction (L) at an end cap-side end.
A wiper blade (10) comprising a wiping strip (12) and a heating element (32), characterized in that the heating element (32) is self-regulating, such that when a temperature of the heating element (32) increases, a heat power from the heating element (32) is configured to decrease, wherein the heating element (32) is surrounded by a polyolefin jacket (40) or a fluoropolymer jacket (40), and wherein the polyolefin jacket (40) or the fluoropolymer jacket (40) is surrounded by a braid (42) of tin copper filaments.
Dependencies are inferred from the claim text.