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US 9,388,691 B2Granted
Protective element, concrete element, and method for producing a concrete element
AssigneeHerrenknecht AG
InventorMarc Peters
Life of this patent
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AssigneeHerrenknecht AG
InventorMarc Peters
Estimating the term…
The invention relates to a protective element (20) for connecting to a concrete element (10) of a tunnel lining, to the concrete element (10) and to the method for producing the concrete element (10). It is an object of the invention to provide a protective element (20) for a tunnel lining, or the associated concrete element, which ensures that the protective casing of the tunnel lining is better safeguarded against corrosive gases or liquids. The solution of the invention provides that the protective element (20) is produced from an injection-moldable plastics material, that a protective portion (21, 22, 23) is connected in a single piece to a seal (30), wherein the connection is gas-tight and liquid-tight, that the protective portion (21, 22, 23) is connected in a single piece to a connecting element (24, 25, 26, 27, 28), and that the single-piece connection is produced by injection molding of the plastics material.
A protective element of an injection moldable material for a plurality of concrete tubbing elements, the tubbing elements having a convex inner surface, a convex outer surface and side surfaces between the inner and outer surfaces, comprising;
Dependencies are inferred from the claim text.