Patents by Inventor Alfred Affa

Alfred Affa 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).

  • Error correction apparatus for a length-measuring instrument and method for generating an error correction profile
    Patent number: 4262423
    Abstract: An error correction apparatus for a precision measuring instrument includes an error correction profile which is formed as an integral part of a structural member of the measuring instrument, thereby avoiding the need for a separately mounted and adjusted profile member. Preferably, the integral profile of this invention is shaped after the instrument has been calibrated with the measuring scale mounted in place on the structural member which defines the profile.
    Type: Grant
    Filed: May 8, 1979
    Date of Patent: April 21, 1981
    Assignee: Dr. Johannes Heidenhain GmbH
    Inventor: Alfred Affa