Patents by Inventor Risto Lunden

Risto Lunden has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4683685
    Abstract: A draining arrangement for removing water from roofs or equivalent areas wherein the aim of the arrangement is to improve the draining effect making it possible to use smaller draining pipes, and further to avoid disturbing noise in the pipes. The arrangement is mainly characterized in that the opening (4) of the vertical water pipe (3) is situated directly at the surface (1) of the roof and is covered by a lid element (5). This lid is situated at a height (h.sub.c) over the roof that a certain predefined amount of water can flow under the lid where the water stream while on its way to the opening of the vertical draining pipe and without changing its direction, continuously changes to closed flow simultaneously as the air entrance becomes closed.
    Type: Grant
    Filed: June 23, 1986
    Date of Patent: August 4, 1987
    Assignee: Oy Kontekla
    Inventors: Olavi Ebeling, Risto Lunden
  • Patent number: 4492491
    Abstract: 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.
    Type: Grant
    Filed: May 26, 1982
    Date of Patent: January 8, 1985
    Assignee: Oy Kontekla
    Inventors: Risto Lunden, Olavi Ebeling