Patents by Inventor Rolf Appelkvist

Rolf Appelkvist 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).

  • Pliers jaws for cutting materials with different hardness and dimensions
    Patent number: 5033195
    Abstract: In tools for clipping material of different hardness and dimensions, there are required blade-portions (1, 2) having different characterics. A pliers jaw, the blade-portion of which is formed with different edge angles (a.alpha..sub.1, .alpha..sub.2), different edge radii and different widths (b, B) on its outer chamfer surface (5) results in a tool which is usable for different materials. By configuring different cutting areas (6, 7) by distinctly machining the jaw, the right cutting area can easily be localized for the material in question that is to be cut.
    Type: Grant
    Filed: June 21, 1990
    Date of Patent: July 23, 1991
    Assignee: F E Lindstrom AB
    Inventors: Rolf Appelkvist, Hans Bergstrom, Lars Erlandsson
  • Wire retainer and diagonal cutting nipper with wire retainer
    Patent number: 4404746
    Abstract: A wire retainer, as well as a box joint nipper provided with such wire retainer, which is made from sheet metal and fittable to a side nipper of the kind consisting of two members crossing each other at a box joint portion, which are pivotably kept together by a hinge means and form the jaws and handles of the nipper. The wire retainer prevents offcuts from dropping when cutting and has an elastically yielding wire retainer tongue projecting out along one jaw of the nipper to retain the offcut between it and the opposite jaw. The wire retainer has an attachment portion from which the wire retainer tongue projects. The attachment portion comprises a plate with a hook on both side edges for removal and fitting to one of the members of the nipper in the region of the hinged portion.
    Type: Grant
    Filed: December 19, 1980
    Date of Patent: September 20, 1983
    Assignee: AB Bahco Verktyg
    Inventors: Conny Jansson, Lars Erlandsson, Rolf Appelkvist
  • Wire retainer and diagonal cutting nipper with wire retainer
    Patent number: 4247983
    Abstract: A wire retainer, as well as a side nipper provided with such wire retainer, which is made from sheet metal and fittable to a side nipper of the kind consisting of two members crossing each other at a joint portion, which are pivotably kept together by a hinge means and form the jaws and handles of the nipper. The wire retainer prevents offcuts from dropping when cutting and has an elastically yielding wire retainer tongue projecting out along one jaw of the nipper to retain the offcut between it and the opposite jaw. The wire retainer has an attachment portion from which the wire retainer tongue projects. The attachment portion comprises a plate with a hook on one side edge and a flange on its other side edge for removal and fitting without tools to one of the members of the nipper in the region of the hinged portion.
    Type: Grant
    Filed: August 24, 1979
    Date of Patent: February 3, 1981
    Assignee: AB Bahco Verktyg
    Inventors: Conny Jansson, Lars Erlandsson, Rolf Appelkvist