Patents by Inventor Donald Francis Colglazier

Donald Francis Colglazier 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).

  • Patent number: 4113245
    Abstract: A multibin, cut-sheet xerographic copier capable of operating in a simplex or a duplex copy mode, wherein sheets are fed from a selected sheet stack, one at a time, to the copier's transfer station, by a sheet feeding means which includes a combing wheel. The combing wheel shingles the top few sheets, and particularly the single top sheet's leading edge, to a normally open feed nip. This nip is closed by copier logic to feed the top sheet to the transfer station. The feed nip comprises a fixed position, continuously rotating feed roller adapted to cooperate with the top surface of the top sheet. A solenoid controlled, nip-closing, composite pad is pivotable upward to press the top sheet against the feed roller. This composite pad includes a first low friction, nonresilient pressure pad cooperating with the feed roller, and a second, reduced thickness, resilient pad cooperating with the leading edge of the shingled sheets under the top sheet.
    Type: Grant
    Filed: April 18, 1977
    Date of Patent: September 12, 1978
    Assignee: International Business Machines Corporation
    Inventors: Donald Francis Colglazier, John Leslie Fallon, Ernest Paul Kollar, Fred Ralph Mares
  • Patent number: 4089516
    Abstract: A multibin, cut-sheet xerographic copier capable of operating in a simplex or a duplex copy mode, wherein sheets are fed from a selected sheet stack, one at a time, to the copier's transfer station, by a sheet feeding means which includes a combing wheel.The combing wheel shingles the leading edge of the stack's top sheet to an open feed roller nip, to be sensed thereat by a pneumatic sensor. Sensing of this leading edge causes the combing wheel to be lifted off the stack. Subsequently, at a time determined by the copier's control logic, the drive nip closes to thereby feed the top sheet to the copier's paper registration gate, and then to its transfer station. As soon as this sheet's trailing edge has cleared the pneumatic sensor, and the drive nip has opened, the next sheet is staged at the shingled position, in the open drive nip.Means are provided to deshingle the stack when the copier's paper supply drawer is opened, as for reloading paper.
    Type: Grant
    Filed: April 18, 1977
    Date of Patent: May 16, 1978
    Assignee: International Business Machines Corporation
    Inventors: Donald Francis Colglazier, John Leslie Fallon, Ernest Paul Kollar, Fred Ralph Mares