Patents by Inventor Jukka Perttula

Jukka Perttula 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).

  • Channel system with a cross-section with rounded corners and method for manufacturing elements therein
    Patent number: 5682926
    Abstract: A thin wall system for providing a channel includes a plurality of planar basic parts for forming planar wall parts of the system, and a plurality of arcuate basic parts. The arcuate basic parts extend in a longitudinal direction and curve in a transverse direction for forming arched wall parts of the system. The arched wall parts are attached to the planar wall parts along their edges in the longitudinal direction for forming straight segments of the channel which includes rounded corners provided by the arched wall parts.
    Type: Grant
    Filed: October 3, 1994
    Date of Patent: November 4, 1997
    Inventor: Jukka Perttula