A method and device is provided for repairing a plumbing waste pipe without having to remove a failed portion of the waste pipe. The invention also relates to compounds for inhibiting the aggregation of amyloid proteins that form amyloid deposits, methods for delivering therapeutic agents to amyloid deposits, as well as methods of making compounds that inhibit the aggregation of amyloid proteins. Remote communications devices are virtual client devices connected from a public communications network to the private communications network. The at least one flange segment is arranged for enabling a cog belt to be configured onto the pulley without interfering with the at least one of the flange segment.