Patents by Inventor Alvin H. Groff

Alvin H. Groff 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).

  • Absolute incremental hybrid shaft position encoder
    Patent number: 4041483
    Abstract: An incremental type shaft position encoder which provides a distinguishable signal at each of a plurality of predetermined shaft rotational positions, and which further provides a unique electrical signature associated with each of predetermined ones of the signals.
    Type: Grant
    Filed: April 18, 1975
    Date of Patent: August 9, 1977
    Assignee: Rockwell International Corporation
    Inventor: Alvin H. Groff