Patents by Inventor Matti K. Tiikkainen

Matti K. Tiikkainen 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).

  • Apparatus and method for building a foundation for uprights or for making passages therethrough
    Patent number: 5295766
    Abstract: An apparatus and a method for building a foundation for uprights, such as flagpoles, posts, pillars or the like, or for making passages e.g. for cables, tubes etc. The apparatus (1) includes a drive-shaft (3) equipped helical auger (2). The shaft (3) is provided with a tubular body portion (4,4a). The end of the body section (4a) facing the helical auger (2) is fitted with a conical section (5) tapering towards helical auger (2). Thus, when the apparatus is in operation, the tapered section (5) serves to compact a soil layer softened by the helical auger (2).
    Type: Grant
    Filed: September 21, 1992
    Date of Patent: March 22, 1994
    Inventor: Matti K. Tiikkainen