Oy Kontekla

Oy Kolster Ab

Aeromator Trading Company Ab

Insinooritoimisto Megsent Oy

Olavi A Ebeling

Risto Waldemar Lunden

Method in connection with a roof drainage apparatus and a roof drainage

Breathing mask having a cellulose heat and moisture exchanger formed

Draining arrangement for roof

Waste screen

A rain water roof outlet for a building for conducting rain water from a roof as an airless flow, i.e. as a full water flow. The arrangement includes a vertical pipe which at its upper end is connected to a wider trough mounted at the level of the roof. In the trough, above the mouth of the vertical pipe, is mounted a lid, which by special formation of its shape or by means of additional elements is adapted to increase the friction against the water flowing towards the mouth of the vertical pipe. This friction counteracts the tendency of creating whirls in the water stream and thereby contributes to producing full water flow in the vertical pipe by preventing air entry. The lid is preferably a net.

Rain water roof outlet or similar for a building

A respiration mask comprising a mask portion and a heat exchanger through which inhalation and exhalation air flows for the recovery of humidity and humidity contained in the exhalation air. The heat exchanger consists a continuous strip of wire netting wound helically to form a cylindrical netting roll comprising several turns. The flow of air takes place radially through the netting roll.

Respiration mask

Growing community of inventors

Helsinki, Finland

Olavi A Ebeling