Patents by Inventor James P. Koller

James P. Koller 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).

  • Print head actuator for an ink jet printer
    Patent number: 4516140
    Abstract: The illustrated ink jet (19) includes a chamber (22) containing a quantity of ink (54) discharged through a nozzle orifice (28) in the form of droplets (84). The ink is discharged in response to movement of an actuator positioned over a chamber (22) opening. The actuator (50) includes a piezoceramic plate (60), the surfaces of which are covered by electrodes (62, 64). Soldered to the electrode (62) is a bending plate (56) which is secured by adhesive (58) to a flexible sheet of insulating material (52). Control signals are fed through conductors (72, 59) to the electrodes (62, 64).
    Type: Grant
    Filed: December 27, 1983
    Date of Patent: May 7, 1985
    Assignee: AT&T Teletype Corporation
    Inventors: David B. Durkee, James P. Koller, Robert M. Wentzel