Patents by Inventor Henry P. Mitchell

Henry P. Mitchell 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).

  • Control for a sheet stack supporting platform
    Patent number: 5988629
    Abstract: A sheet feeder having a platform for supporting a stack of sheets, a feed head assembly for feeding sheets seriatim from the top of a sheet supply stack on the platform, a mechanism for moving the platform relative to the feed head assembly, and a device for controlling operation of the platform moving mechanism. The control device for the platform moving mechanism includes a sensor for detecting marginal edges of sheets in the sheet stack on the platform, and producing a signal indicative of sheet edge detection. Additionally, a sensor is provided for detecting the location of the topmost sheet on the sheet stack on the platform, and producing a signal indicative of such top sheet location detection. A signal is set representative of the top of the sheet stack being in proper operative relation to the feed head assembly, this set signal being based on the signal from the top location sensor for the particular location of the top of the stack when the marginal sheet edge detection signal is first produced.
    Type: Grant
    Filed: September 30, 1996
    Date of Patent: November 23, 1999
    Assignee: Eastman Kodak Company
    Inventors: Leroy E. Burlew, Michael T. Dobbertin, Henry P. Mitchell, Theophilus C. Wituszynski