Patents by Inventor Holger Schafer

Holger Schafer 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: 20020168920
    Abstract: A device is disclosed for edge-machining an optical lens, clampable between two aligned holding shafts rotatable about the rotational axis of a workpiece, having a Z slide, which is guided longitudinally displaceably on a base frame in a Z direction parallel to the rotational axis of the workpiece, and an X slide bearing a tool post with an edge-machining tool, which is guided longitudinally displaceably on the Z slide in an X direction perpendicular to the Z direction in such a way that the edge-machining tool may be brought into machining engagement with the optical lens. For industrial use, the base frame is of substantially O-shaped construction and surrounds the Z slide, wherein the Z slide is likewise of substantially O-shaped construction and surrounds the X slide.
    Type: Application
    Filed: March 21, 2002
    Publication date: November 14, 2002
    Applicant: Loh Optikmaschinen AG
    Inventors: Steffen Wallendorf, Holger Schafer
  • Publication number: 20020149862
    Abstract: An apparatus is provided for securing and clamping optical lenses requiring edge-machining, in particular spectacle lenses, which exhibits improved handling and which is optimised from the point of view of virtually backlash-free rotary drive of the optical lens. Elements located between two holding shafts, in particular a clamping assembly, a securing member with securing member adapter and an adhesive connection between securing member and optical lens are specially designed for this purpose.
    Type: Application
    Filed: March 21, 2002
    Publication date: October 17, 2002
    Applicant: Loh Optikmaschinen AG
    Inventors: Steffen Wallendorf, Holger Schafer
  • Patent number: 6394892
    Abstract: A very versatile device is proposed for high-precision machining of optical workpieces, in particular optical lenses, which comprises a horizontally displaceable gantry with at least one vertically displaceable tool spindle and a yoke with workpiece holding means mounted so as to be rotatable about a swivel axis by means of journals fitted on both sides. For swivelling of the yoke without gearing and therefore without backlash, a torque motor is provided concentrically to the swivel axis, which motor is directly connected actively with one of the journals.
    Type: Grant
    Filed: June 25, 2001
    Date of Patent: May 28, 2002
    Assignee: Lo Optikmaschinen AG
    Inventors: Manfred Hanisch, Joachim Diehl, Holger Schäfer
  • Publication number: 20020006764
    Abstract: A very versatile device is proposed for high-precision machining of optical workpieces, in particular optical lenses, which comprises a horizontally displaceable gantry with at least one vertically displaceable tool spindle and a yoke with workpiece holding means mounted so as to be rotatable about a swivel axis by means of journals fitted on both sides. For swivelling of the yoke without gearing and therefore without backlash, a torque motor is provided concentrically to the swivel axis, which motor is directly connected actively with one of the journals.
    Type: Application
    Filed: June 25, 2001
    Publication date: January 17, 2002
    Applicant: Loh Optikmaschinen AG
    Inventors: Manfred Hanisch, Joachim Diehl, Holger Schafer
  • Publication number: 20010031606
    Abstract: A device for centering clamping of lenses, comprises two aligned centering spindles, arranged one above the other, with bell clamps. One centering spindle is guided axially in a centering spindle guide and may be moved relative to the other centering spindle by a lifting apparatus. To achieve a smooth, sensitively adjustable clamping movement with precise axial alignment of the centering spindles to allow clamping of small lenses, a swivellable rocking lever is provided, to which the mobile centering spindle and a counterweight are coupled on opposing sides. The lifting apparatus is provided with an electric motor-driven ball screw, which raises or lowers the mobile centering spindle and/or the centering spindle guide is equipped with linear guide units, which are arranged on each side of the mobile centering spindle in substantially play-free manner between the latter and a box-type structure.
    Type: Application
    Filed: February 23, 2001
    Publication date: October 18, 2001
    Applicant: Loh Optikmaschinen AG
    Inventors: Erhard Schafer, Holger Schafer
  • Patent number: 5471920
    Abstract: An assembly device for binding bunched cables with a plastic fastener having a serrated tension band and a separate locking clasp including a housing for holding a wound roll of the tension band, an exit opening in one end of said housing through which the tension band can be fed, a first guide channel in the housing having an entrance end and an exit end and positioned for feeding the tension band from its roll to the exit opening and a second guide channel located in the housing above the first guide channel for feeding an endless chain of the locking clasps interconnected together by frangible webs to position the locking clasps one at a time in the exit opening so that the tension band can be passed out through the opening in the clasp.
    Type: Grant
    Filed: August 16, 1994
    Date of Patent: December 5, 1995
    Assignee: A. Raymond GmbH & Co. KG
    Inventors: Holger Schafer, Lothar Escher, Martin Busch
  • Patent number: 5351611
    Abstract: An assembly device for binding bunched cables with a plastic fastener having a serrated tension band and a separate locking clasp including a housing for holding a wound roll of the tension band, an exit opening in one end of said housing through which the tension band can be fed, a first guide channel in the housing having an entrance end and an exit end and positioned for feeding the tension band from its roll to the exit opening and a second guide channel located in the housing above the first guide channel for feeding an endless chain of the locking clasps interconnected together by frangible webs to position the locking clasps one at a time in the exit opening so that the tension band can be passed out through the opening in the clasp.
    Type: Grant
    Filed: April 15, 1993
    Date of Patent: October 4, 1994
    Assignee: A. Raymond GmbH & Co. KG
    Inventors: Holger Schafer, Lothar Escher, Martin Busch