Road finisher, tamper bar for a road finisher, and method for manufacturing a tamper bar
First Claim
1. A tamper bar for a road finisher, the tamper bar comprising:
- an upper tamper bar member and a lower tamper bar member assembled together,at least one electrically operated heating element, which is configured to heat a heating surface facing a road subsurface,wherein the heating element comprises at least one heating layer at least partially comprising a thermal spray coating, obtained through thermal spraying onto a substrate surface,wherein the upper tamper bar member has a lower surface which, in the assembled state, contacts an upper surface of the lower tamper bar member, wherein a groove is provided in the lower surface of the upper tamper bar member, andwherein the at least one heating layer is disposed in the groove, andwherein the at least one heating layer disposed in the groove is a multilayered heating layer comprising an insulating layer, a strip conductor and a sealing layer.
1 Assignment
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Accused Products
Abstract
A road finisher comprising a screed plate extending at right angles to the working direction of the road finisher, and a tamper bar disposed rearwardly and/or forwardly of the screed plate in the working direction, wherein at least one electrically operated heating element is present, which is configured so as to heat up a heating surface facing a road subsurface, and wherein the heating element comprises a heating layer at least partially obtained through thermal spraying onto a substrate surface, wherein the tamper bar is made from two parts with an upper tamper bar member and a lower tamper bar member assembled together. Further, a tamper bar for a road finisher and a method of manufacturing a tamper bar are provided.
18 Citations
14 Claims
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1. A tamper bar for a road finisher, the tamper bar comprising:
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an upper tamper bar member and a lower tamper bar member assembled together, at least one electrically operated heating element, which is configured to heat a heating surface facing a road subsurface, wherein the heating element comprises at least one heating layer at least partially comprising a thermal spray coating, obtained through thermal spraying onto a substrate surface, wherein the upper tamper bar member has a lower surface which, in the assembled state, contacts an upper surface of the lower tamper bar member, wherein a groove is provided in the lower surface of the upper tamper bar member, and wherein the at least one heating layer is disposed in the groove, and wherein the at least one heating layer disposed in the groove is a multilayered heating layer comprising an insulating layer, a strip conductor and a sealing layer. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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2. A method of manufacturing a tamper bar, comprising the following steps:
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forming an upper tamper bar member; forming a lower tamper bar member; forming a groove in a lower surface of the upper tamper bar member; disposing at least one heating layer of at least one electrically operated heating element in the groove, wherein the at least one heating layer at least partially comprises a thermal spray coating obtained through thermal spraying onto a substrate surface, and the at least one heating layer is a multilayered heating layer comprising an insulating layer, a strip conductor and a sealing layer; and assembling the lower tamper bar member and the upper tamper bar member so as to form the tamper bar. - View Dependent Claims (3, 4)
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Specification