Patents by Inventor Earnest Joseph Ray

Earnest Joseph Ray 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).

  • Shaft position sensor
    Patent number: 4056722
    Abstract: Shaft position sensing apparatus includes a group of generally parallel vanes extending generally longitudinally of the shaft axis, means for mounting the vanes in that relationship and attaching them to the shaft for rotation with the shaft, a light source providing a beam of light directed transversely of the shaft axis against the vanes, and a light sensor aligned with the light beam and positioned on the opposite side of the shaft axis from the light source for receiving varying amounts of light dependent upon the angular position of the shaft.
    Type: Grant
    Filed: September 29, 1976
    Date of Patent: November 1, 1977
    Assignee: Dictaphone Corporation
    Inventor: Earnest Joseph Ray