Patents by Inventor Holger Schaefer

Holger Schaefer 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: 11662544
    Abstract: Disclosed is a lens holding block for positioning and retaining a lens substrate in a processing machine, including a bottom part that is able to immobilize the lens holding block in the processing machine and an upper part. The upper part includes a chamber wherein is housed and attached a porous article so as to receive the lens substrate to be processed and which is able to be impregnated with a fluid, and a method for positioning and retaining a lens substrate onto a lens holding block.
    Type: Grant
    Filed: March 22, 2019
    Date of Patent: May 30, 2023
    Assignee: Essilor International
    Inventors: Michael Mauderer, Holger Schaefer, Herger Alt
  • Publication number: 20190302395
    Abstract: Disclosed is a lens holding block for positioning and retaining a lens substrate in a processing machine, including a bottom part that is able to immobilize the lens holding block in the processing machine and an upper part. The upper part includes a chamber wherein is housed and attached a porous article so as to receive the lens substrate to be processed and which is able to be impregnated with a fluid, and a method for positioning and retaining a lens substrate onto a lens holding block.
    Type: Application
    Filed: March 22, 2019
    Publication date: October 3, 2019
    Inventors: Michael MAUDERER, Holger SCHAEFER, Herger ALT
  • Patent number: 10401194
    Abstract: A sensor is provided for determining at least one rotation characteristic of a rotating element. The sensor includes a sensor wheel, which is connectable to the rotating element, including at least one first reading track. The reading track includes a first plurality of magnetic event timers. The sensor furthermore includes at least one magnetic sensor for detecting magnetic events generated by the first plurality of magnetic event timers. The first reading track is designed in such a way that, over a complete circumference of the sensor wheel, a magnetic field strength of the first plurality of event timers changes step-by-step from a first maximum north pole to a first maximum south pole.
    Type: Grant
    Filed: August 17, 2015
    Date of Patent: September 3, 2019
    Assignee: Robert Bosch GmbH
    Inventor: Holger Schaefer
  • Publication number: 20170219380
    Abstract: A sensor is provided for determining at least one rotation characteristic of a rotating element. The sensor includes a sensor wheel, which is connectable to the rotating element, including at least one first reading track. The reading track includes a first plurality of magnetic event timers. The sensor furthermore includes at least one magnetic sensor for detecting magnetic events generated by the first plurality of magnetic event timers. The first reading track is designed in such a way that, over a complete circumference of the sensor wheel, a magnetic field strength of the first plurality of event timers changes step-by-step from a first maximum north pole to a first maximum south pole.
    Type: Application
    Filed: August 17, 2015
    Publication date: August 3, 2017
    Applicant: Robert Bosch GmbH
    Inventor: Holger SCHAEFER
  • Patent number: 7739778
    Abstract: A method for machining particularly spectacle lenses by means of a machine which comprises at least one cutting unit and at least one turning unit in a common working space, wherein at least two spectacle lenses are machined at the same time in the working space, one of said spectacle lenses being cut while the other is turned. The machine frames of the cutting unit and of the turning unit are essentially decoupled from one another in terms of vibration and/or at least two machining units of the machine comprise workpiece spindle units for generating a transverse movement of the spectacle lens to be machined with respect to the respective tool, the workpiece spindle units being arranged essentially perpendicular to one another. As a result, it is possible for spectacle lenses to be machined in an extremely short time with high machining performance and with high surface precision and quality.
    Type: Grant
    Filed: May 1, 2006
    Date of Patent: June 22, 2010
    Assignee: Satisloh GmbH
    Inventors: Udo Fiedler, Manfred Hanisch, Karl-Heinz Tross, Steffen Wallendorf, Holger Schaefer
  • Patent number: 7278192
    Abstract: A lathe for machining optical workpieces, in particular spectacle lenses, comprises a fast tool arrangement and a workpiece spindle arrangement. A machine frame is cast monolithically from polymer concrete and on and in which all the functional surfaces, functional spaces and other cutouts are formed to their exact dimensions during the casting process. The machine frame upper part cast in one piece simultaneously covers the fast tool arrangement and the workpiece spindle arrangement and thus the machine bed in the manner of a covering hood. The machine frame is of compact dimensions, has a very rigid oscillation-damping machine bed and, in comparison with the rapidly moving elements of the fast tool arrangement, has a very large mass with a high center of gravity, which prevents the transmission of disruptive oscillations from the fast tool movement to the machine bed and thus to the workpiece spindle arrangement.
    Type: Grant
    Filed: May 1, 2006
    Date of Patent: October 9, 2007
    Assignee: Satisloh GmbH
    Inventor: Holger Schaefer
  • Publication number: 20060260448
    Abstract: A method for machining particularly spectacle lenses by means of a machine which comprises at least one cutting unit and at least one turning unit in a common working space, wherein at least two spectacle lenses are machined at the same time in the working space, one of said spectacle lenses being cut while the other is turned. The machine frames of the cutting unit and of the turning unit are essentially decoupled from one another in terms of vibration and/or at least two machining units of the machine comprise workpiece spindle units for generating a transverse movement of the spectacle lens to be machined with respect to the respective tool, the workpiece spindle units being arranged essentially perpendicular to one another. As a result, it is possible for spectacle lenses to be machined in an extremely short time with high machining performance and with high surface precision and quality.
    Type: Application
    Filed: May 1, 2006
    Publication date: November 23, 2006
    Inventors: Udo Fiedler, Manfred Hanisch, Karl-Heinz Tross, Steffen Wallendorf, Holger Schaefer
  • Publication number: 20060248697
    Abstract: A lathe for machining optical workpieces, in particular spectacle lenses, comprises a fast tool arrangement and a workpiece spindle arrangement. A machine frame is cast monolithically from polymer concrete and on and in which all the functional surfaces, functional spaces and other cutouts are formed to their exact dimensions during the casting process. The machine frame upper part cast in one piece simultaneously covers the fast tool arrangement and the workpiece spindle arrangement and thus the machine bed in the manner of a covering hood. The machine frame is of compact dimensions, has a very rigid oscillation-damping machine bed and, in comparison with the rapidly moving elements of the fast tool arrangement, has a very large mass with a high center of gravity, which prevents the transmission of disruptive oscillations from the fast tool movement to the machine bed and thus to the workpiece spindle arrangement.
    Type: Application
    Filed: May 1, 2006
    Publication date: November 9, 2006
    Inventor: Holger Schaefer