Patents by Inventor Ralf Bihr

Ralf Bihr 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).

  • Position-measuring device
    Patent number: 8988691
    Abstract: A position-measuring device is used to detect the relative position of two machine components that are disposed in a manner allowing movement relative to each other at least along a first and a second main direction of motion in a displacement plane. The device includes at least one measuring standard, which is mounted on a first machine component. At least six scanning units are mounted on a second machine component, and are used for the optical scanning of the measuring standard in at least two measuring directions in the displacement plane. At least two scanning units are assigned to each measuring direction. The scanning units of each respective measuring direction in the displacement plane are disposed non-centrosymmetrically in relation to a center of the second machine component.
    Type: Grant
    Filed: June 17, 2013
    Date of Patent: March 24, 2015
    Assignee: Dr. Johannes Heidenhain GmbH
    Inventors: Ralf Bihr, Joerg Drescher, Wolfgang Holzapfel, Markus Meissner, Bernhard Musch, Bernhard Pletschacher
  • Position-Measuring Device
    Publication number: 20130335750
    Abstract: A position-measuring device is used to detect the relative position of two machine components that are disposed in a manner allowing movement relative to each other at least along a first and a second main direction of motion in a displacement plane. The device includes at least one measuring standard, which is mounted on a first machine component. At least six scanning units are mounted on a second machine component, and are used for the optical scanning of the measuring standard in at least two measuring directions in the displacement plane. At least two scanning units are assigned to each measuring direction. The scanning units of each respective measuring direction in the displacement plane are disposed non-centrosymmetrically in relation to a center of the second machine component.
    Type: Application
    Filed: June 17, 2013
    Publication date: December 19, 2013
    Inventors: Ralf Bihr, Joerg Drescher, Wolfgang Holzapfel, Markus Meissner, Bernhard Musch, Bernhard Pletschacher