Patents by Inventor Martin Holland-Letz

Martin Holland-Letz 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: 7877843
    Abstract: The present invention relates to a handle, in particular for use in a screwdriver. Such handle comprises an outer region having a first stiffness and an inner region comprising a second stiffness. According to the invention the second stiffness is smaller than the first stiffness. The inner region might be built with chambers and ribs wherein the chambers might be hollow or filled with a soft material, e.g. a gel or a soft porous or non-porous plastic material.
    Type: Grant
    Filed: June 25, 2007
    Date of Patent: February 1, 2011
    Assignee: Felo-Werkzeugfabrik Holland-Letz GmbH
    Inventor: Martin Holland-Letz
  • Publication number: 20070256276
    Abstract: The present invention relates to a handle, in particular for use in a screwdriver. Such handle comprises an outer region having a first stiffness and an inner region comprising a second stiffness. According to the invention the second stiffness is smaller than the first stiffness. The inner region might be built with chambers and ribs wherein the chambers might be hollow or filled with a soft material, e.g. a gel or a soft porous or non-porous plastic material.
    Type: Application
    Filed: June 25, 2007
    Publication date: November 8, 2007
    Applicant: Felo-Werkzeugfabrik Holland-Letz GmbH
    Inventor: MARTIN HOLLAND-LETZ
  • Publication number: 20050178251
    Abstract: A screw driver (50) for use with electrical appliances under voltage includes a handle (1) and a functional part (2) with a shank (3) and an end piece (5). The shank (3) is designed to be partly covered by an insulating sleeve (9) made of plastic. The end piece (5) is insulated and connectable to said handle (1) so that torque is transferable from said handle (1) to said functional part (2). The handle (1) is insulated from said shank (3). Furthermore the screw driver (50) includes a holding device (11) which is connected to the handle (1) and comprises a secured position and a released position. The holding device (11) is manually operable between the secured position and the released position. In the secured position the holding device (11) positively engages the functional part (2) such that the functional part (2) cannot be detached from the handle (1). In the released position the functional part (2) is allowed to be detached from said handle (1).
    Type: Application
    Filed: February 16, 2005
    Publication date: August 18, 2005
    Applicant: Felo-Werkzeugfabrik Holland-Letz GmbH
    Inventor: Martin Holland-Letz
  • Publication number: 20050098002
    Abstract: A magnetic screw-holding device is assembled close to the profile tip on the shank of a hand-screwdriver or screwdriver-insert with long shank. The device essentially consists of a sleeve made of non magnetic-conducing material in which a magnet is fixed at the front side or of a magnet made of magnetic material embedded in a plastic binder produced by injection molding. The sleeve with the magnet or the magnet can easily move in longitudinal direction and is or can be brought into such a position relative to the profile tip that by the force of the magnet-field the sleeve or the magnet moves automatically into a position in which the front face of the magnet contacts the surface of the screw head and also attracts the screw onto the profile tip so that it completely penetrates into the recess in the screw head if a screw is placed on the profile tip.
    Type: Application
    Filed: August 16, 2004
    Publication date: May 12, 2005
    Applicant: Felo-Werkzeugfabrik Holland-Letz GmbH
    Inventor: Martin Holland-Letz