Patents by Inventor Johann Eisen

Johann Eisen 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).

  • Publication number: 20080244917
    Abstract: A sharpener, particularly a cosmetic pencil sharpener, contains a sleeve-like sharpener housing whose inside diameter for rotationally guiding the pencil to be sharpened is dimensioned so that it is somewhat larger than the outside diameter and whose inside length is dimensioned in such a manner that it enables a pencil end section to be conically sharpened by a sharpening blade diagonally projecting into the inside cross-section of the sharpener housing. Another sleeve-like housing section is situated at the end of the sharpener housing opposite the insertion end and is separated from the sharpener housing by a partition The inner area of the second housing section is provided in the form of a tight blind bore with an inside diameter approximately corresponding to the outside diameter of the pencil to be sharpened and, in the form of a pencil protector, and can be slid onto the pencil with a press fit.
    Type: Application
    Filed: August 11, 2004
    Publication date: October 9, 2008
    Inventor: Johann Eisen
  • Patent number: 6732437
    Abstract: A sharpener for pencils with a soft lead with a sharpener housing has a conical sharpener channel, a sharpening knife which is fastened at the fastener housing and which is set tangentially to the sharpener channel. A shape-cutting knife, which can be swiveled into the sharpener channel, is provided with a manually actuated lever and with an arc-shaped, curved cutting edge for the selective shaping of the front end section of the lead. The sharpener is constructed as a double sharpener with individual sharpeners for pencils of different diameters placed opposite to one another in a common housing and the shape-cutting knives can be swiveled alternatively upward against the lead in the respective individual sharpener about a common axis, which is disposed at the common front end of the sharpener channels which are open in the upward and downward directions in this region.
    Type: Grant
    Filed: May 31, 2002
    Date of Patent: May 11, 2004
    Assignee: Eisen GmbH
    Inventors: Johann Eisen, Reiner Eisen
  • Publication number: 20030163925
    Abstract: A sharpener for pencils with a soft lead with a sharpener housing has a conical sharpener channel, a sharpening knife which is fastened at the fastener housing and which is set tangentially to the sharpener channel. A shape-cutting knife, which can be swiveled into the sharpener channel, is provided with a manually actuated lever and with an arc-shaped, curved cutting edge for the selective shaping of the front end section of the lead. The sharpener is constructed as a double sharpener with individual sharpeners for pencils of different diameters placed opposite to one another in a common housing and the shape-cutting knives can be swiveled alternatively upward against the lead in the respective individual sharpener about a common axis, which is disposed at the common front end of the sharpener channels which are open in the upward and downward directions in this region.
    Type: Application
    Filed: May 31, 2002
    Publication date: September 4, 2003
    Inventors: Johann Eisen, Reiner Eisen
  • Patent number: D442993
    Type: Grant
    Filed: May 22, 2000
    Date of Patent: May 29, 2001
    Assignee: Christian Eisen & Sohn Metallwarenfabrik GmbH
    Inventor: Johann Eisen