Tube of fabric reinforced pvc
OwnerLars-Ingvar Nordstrominventor
Life of this patent
Estimating the term…
Abstract
A tube (1) of fabric reinforced PVC for suspension from a ceiling of a tunnel or the like comprises a tube shaped fabric with an internal and an external coating of PVC. The internal coating is of black, electrically conducting PVC and the external coating is of white, electrically isolating PVC. The tube (1) is provided with an external, longitudinal strip (2) of black, electrically conducting PVC in contact with the internal coating. The strip (2) is earthed by a suspension arrangement (3-5) for the tube (1) to the ceiling.
Claims5
A tube of fabric reinforced PVC for suspension from a ceiling of a tunnel or the like, comprising a tube shaped fabric with an internal and an external coating of PVC, wherein the internal coating is of black, electrically conducting PVC and the external coating is of white, electrically isolating PVC and that the tube is provided with an external, longitudinal strip of black, electrically conducting PVC in contact with the internal coating, the strip being earthed by an electrically conducting suspension arrangement for the tube to the ceiling.
Dependencies are inferred from the claim text.