Patents by Inventor Robert J. Turchetti

Robert J. Turchetti 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).

  • Apparatus and method for determining the voltage breakdown and conductivity of particulate material
    Patent number: 5196803
    Abstract: An apparatus and method for determining both the breakdown voltage and the conductivity of a particulate material, such as a developer material, is provided. In a preferred embodiment, the apparatus for determining breakdown voltage comprises a breakdown cell for storing a preselected quantity of the particulate material and a voltage breakdown ("VB") autometer, the VB autometer being adapted to apply a first voltage across at least portions of the preselected quantity of the particulate material. The VB autometer is capable of progressively varying the magnitude of the first voltage. A measuring circuit, for measuring a second voltage, is coupled to the voltage breakdown cell. When the second voltage substantially equals a preselected reference voltage, the first voltage substantially equals the breakdown voltage of the particulate material.
    Type: Grant
    Filed: August 1, 1991
    Date of Patent: March 23, 1993
    Assignee: Xerox Corporation
    Inventors: Michael Cellini, Jr., Rudolph Forgensi, Edward J. Gutman, Kallis H. Mannik, Robert J. Turchetti, Donald H. Wood, Morris M. DeYoung, Jr.