Patents by Inventor Henry F. Hasselvander

Henry F. Hasselvander 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: 4209251
    Abstract: An automatic microfiche duplicator having an upper receiving slot for receiving a copy sheet and master sheet, and a first conveyor which transports the copy sheet and master sheet together in a generally horizontal direction past an exposure cylinder where the copy is exposed and then to a separator which automatically separates the master sheet down and away from the copy sheet. Three embodiments of the separator are illustrated (FIGS. 9-11, 12-14, and 15a-c). The master sheet is then delivered to a reverse, lower conveyor which conveys the master sheet in a reverse horizontal path to an exit tray located below and near the receiving slot. A second upper conveyor transports the exposed copy sheet in the same general horizontal direction as before to a belt driven cylindrical heat developer and then down to a cooling tray where the copy is held for a few seconds.
    Type: Grant
    Filed: May 8, 1978
    Date of Patent: June 24, 1980
    Assignee: Innovative Technology Inc.
    Inventors: Henry G. Schroeder, Henry F. Hasselvander