Patents by Inventor Bennett J. Scharf

Bennett J. Scharf 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: 4908017
    Abstract: Failsafe apparatus and method are disclosed for controlling fluid flow from syringes. One or more syringes are positioned so that the piston of each syringe is caused to be precisely displaced to thereby safely deliver medicament from the syringe to a patient. To effect movement of each piston, a rack is provided, either as a part of the piston or secured thereto, and longitudinal movement of each rack is effected by rotating an associated pinion gear that is connected with a pulse-driven, stepper motor utilized in a power-efficient electromechanical configuration, with the operation of the stepper motor being accomplished through dual-redundant state machines controlled by a pre-programmed memory unit, and with the apparatus being repeatedly subjected to a plurality of error checks and data integrity verifications to assure continued proper operation.
    Type: Grant
    Filed: July 31, 1987
    Date of Patent: March 13, 1990
    Assignee: Ivion Corporation
    Inventors: David C. Howson, Michael W. Fellinger, John A. Popken, Richard M. Altobellis, Bennett J. Scharf, Walter E. Oshetski