Patent ID: 9388691
Filing Date: 2016-07-12
CPC Classification: B28B,B29C,B29L,E21D

Claim Text:
1. 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; a protective layer element configured to extend over a side surface of the tubbing element, the protective layer element connected in a single piece to a seal, the seal projecting from the protective layer element; and, a connecting element configured to extend into the concrete of the tubbing element, wherein; the protective layer element comprises a base portion and wall portions; the seal is integrally formed as one piece to a part of the wall portions of the protective layer element; the seal includes a sealing portion and a retaining portion opposite to the sealing portion; the retaining portion comprises retaining protrusions to engage the wall portions and form a liquid and gas tight seal with the wall portion.