Patents by Inventor Mats A. Johansson

Mats A. Johansson 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).

  • Annular saw blade
    Patent number: 4646607
    Abstract: In an annular saw, that is to say a circular saw with an annular saw blade, the saw blade is adapted to rotate about an imaginary center axis by being driven via a drive shaft which is parallel to the center axis and has a fulcrum between the annular saw blade and its center. Mounted on the drive shaft (27) are two drive rollers (25, 26), of which the adjacent surfaces (41, 42) are bevelled at a certain bevel angle so that the rollers comprise drive surfaces which, between them, form a wedge-shaped groove (40). The two lateral surfaces of the saw blade (8) are bevelled in a corresponding manner within a region (13) close to the inner edge (15) of the saw blade, the bevel angle being the same as for the drive rollers, the bevelled edge portion of the annular saw blade being clamped between the bevelled drive surfaces of the drive rollers in the wedge-shaped groove.
    Type: Grant
    Filed: April 27, 1984
    Date of Patent: March 3, 1987
    Assignee: M. J. Maskiner Aktiebolag
    Inventor: Mats A. Johansson
  • Annular saw blade and annular saw
    Patent number: 4472880
    Abstract: In an annular saw, that is to say a circular saw with an annular saw blade, the saw blade is adapted to rotate about an imaginary center axis by being driven via a drive shaft which is parallel to the center axis and has a fulcrum between the annular saw blade and its center. Mounted on the drive shaft (27) are two drive rollers (25, 26), of which the adjacent surfaces (41, 42) are bevelled at a certain bevel angle so that the rollers comprise drive surfaces which, between them, form a wedge-shaped groove (40). The two lateral surfaces of the saw blade (8) are bevelled in a corresponding manner within a region (13) close to the inner edge (15) of the saw blade, the bevel angle being the same as for the drive rollers, the bevelled edge portion of the annular saw blade being clamped between the bevelled drive surfaces of the drive rollers in the wedge-shaped groove.
    Type: Grant
    Filed: January 19, 1982
    Date of Patent: September 25, 1984
    Inventor: Mats A. Johansson
  • Device relating to a circular saw blade of centerless type
    Patent number: 4352241
    Abstract: A circular saw blade of centerless type which has a sawing depth greater than the radius of the circle, comprises an annular blade and at least one central disc provided inside the annular blade. The central disc contains at least one conduit or passage for a fluid, e.g. for a coolant or a flushing agent to the part of the disc which lies within the region of the maximum sawing depth.
    Type: Grant
    Filed: February 27, 1981
    Date of Patent: October 5, 1982
    Inventor: Mats A. Johansson