Patents by Inventor Peter hnelt

Peter hnelt 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).

  • Coordinate measuring apparatus
    Patent number: 5031331
    Abstract: A coordinate measuring apparatus includes guides made of aluminum. Scales which are also made of aluminum are used to measure the position of the measuring slide movable on the guides. In a preferred embodiment, the scales are in the form of a reflection phase grating and are applied directly to the surface of the guide member. In addition, a temperature sensor is provided which measures the temperature of the guide member and of the scale divisions. A method of producing the scale divisions is also disclosed.
    Type: Grant
    Filed: December 11, 1989
    Date of Patent: July 16, 1991
    Assignee: Carl-Zeiss-Stiftung
    Inventors: Klaus Herzog, Karl Seitz, Karl Schepperle, Peter hnelt