Patents by Inventor E. Alfred Olkkola

E. Alfred Olkkola 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: 4338718
    Abstract: The present invention relates to a novel and improved tool for removing worn and cracked grout from between floor, wall and ceiling tiles in a rapid and efficient manner whereby damage to the tiles is reduced to a minimum.In accordance with one form of the invention novel means is provided for limiting the depth of penetration of the tool in the grout and between the adjacent tiles and in another form of the invention novel means is provided whereby the grout removing portion of the tool may be readily changed to provide a tool adapted for work requiring blade means of different sizes and having different grout removing characteristics.
    Type: Grant
    Filed: March 31, 1980
    Date of Patent: July 13, 1982
    Inventor: E. Alfred Olkkola
  • Patent number: 4086699
    Abstract: The invention relates to a tool and in particular to a tool for removing roofing material including shingles from the roof of a building. The tool consists of a metal blade member having novel means enabling it to be readily inserted under shingles to thereby lift and remove the same from the base of the roof of a building and at the same time remove or shear the roofing nails, and a handle for guiding the blade member during the stripping operation.
    Type: Grant
    Filed: November 1, 1976
    Date of Patent: May 2, 1978
    Inventor: E. Alfred Olkkola