Abstract: The present invention provides a registration agent site (4) which presents a simple intermediary between sites (3) and internet users (1) that acts a single source of data entry, user name and password for users. This allows users to register with new sites automatically and move between registered sites via a single interface, while allowing changes in profile information via the same interface. The registration agent site (4) acts as the agent for the internet user (1) rather than the site owner, allowing registration by proxy in a manner which is transparent to other sites. The agent negotiates connectivity and connects the user.

Abstract: The invention concerns a steam and condensate coupling for a drying cylinder in a paper machine. The steam and condensate coupling includes a piston ring having a seal therein. This stationary, nonrevolving seal is pressed by means of steam pressure against the revolving axle or against a flange part or equivalent permanently connected to said axle. A piston ring is located in the coupling, which includes a face placed substantially perpendicularly to an axial direction of the cylinder, or slightly inclined from the perpendicular plane. In the coupling construction, steam pressure is passed onto the face of the piston ring, and a force is produced. By this force, the piston ring and the seal are pressed toward the revolving axle. Thereby, by means of the steam pressure, a pressure-tight joint is provided between the seal and the revolving axle.