Patents by Inventor Markku Vuorinen

Markku Vuorinen 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: 6205902
    Abstract: The invention relates to a method for attaching tooth bits to a saw blade body. The mating surface (8) of an attachment point provided in the blade body, transverse to the blade's direction of motion (A), is formed such that it is rearwardly oblique at its outermost part, whereby the blade body (4) may bypass a broken tooth bit fragment (5) without being damaged. A discontinuity point, at which the tooth bit (2) fractures controllably, may also be formed in the tooth bit (2). The invention further relates to an arrangement for attaching the tooth bits (2) to the blade body (4) used in sawing. In the arrangement, the outermost part of the mating surface (8) supporting the tooth bit (2) is formed to be rearwardly oblique and the tooth bit (2) has a given protrusion (10) with respect to the blade body (4), with the result that the blade body (4) may bypass the tooth bit fragment (5) without breakage.
    Type: Grant
    Filed: November 25, 1998
    Date of Patent: March 27, 2001
    Assignee: Hackman TTT Oy Ab
    Inventor: Markku Vuorinen
  • Patent number: 6189191
    Abstract: The invention relates to a method for attaching a tooth bit, according to which method the shapelocked tooth bit (4) is rotated into its seat (3). Rotating is arranged to occur in such a way that the tooth bit is mainly subjected to the rotational motion, but not to considerable upward or downward forces, which could damage the tooth bit. The invention further relates to a tool for attaching the tooth bit, which tool comprises means for turning the shapelocked tooth bit (4) into the bit seat (3) provided for attachment. In accordance with one preferred embodiment the tooth bit (4) is arranged to turn about the center of rotation (5) of the bit seat (3).
    Type: Grant
    Filed: March 5, 1999
    Date of Patent: February 20, 2001
    Assignee: Hackman TTT Oy AB
    Inventor: Markku Vuorinen
  • Patent number: 6052881
    Abstract: The invention relates to a tool which is intended for inserting separate tooth bits into a saw blade body by turning. The tool (1) comprises an intermediate part (13) with separate turning plates (12a, 12b) arranged on the sides thereof to cover at least that end of the tool which comes into contact with the tooth bit (2), whereby a free space is formed between the turning plates, which enables the tool to be brought to a saw tooth (11) in such a way that the tooth bit can be turned by support shoulders (5) provided in the tooth bit by means of the tool's first insertion heads (10). By means of the tool's intermediate part the space between the turning plates transversally to the blade is arranged to correspond to the thickness of the blade. The intermediate part is preferably formed from at least one suitably thick plate.
    Type: Grant
    Filed: March 5, 1999
    Date of Patent: April 25, 2000
    Assignee: Hackman TTT OY AB
    Inventors: Markku Vuorinen, Jari Hakala