Patents by Inventor Karl S. Koller

Karl S. Koller 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).

  • Energy absorbing load carrying strut and method of providing such a strut capable of withstanding cyclical loads exceeding its yield strength
    Patent number: 4281487
    Abstract: An energy absorbing load carrying strut is provided by laterally restraining a malleable column against eccentric loading bending moments. Lateral restraint is provided by a sleeve extending around the column and, in some embodiments, a rod extending through the column. The sleeve and rod extend over the full length of the column and are so secured as to laterally restrain the column against buckling and not be subject to substantial axial loading as the result of axial loading of the column. The restraint thus provided enables the column to maintain its load carrying capacity while being loaded beyond its yield point.
    Type: Grant
    Filed: August 6, 1979
    Date of Patent: August 4, 1981
    Inventor: Karl S. Koller