Patents by Inventor John S. Ballas

John S. Ballas 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: 4526357
    Abstract: Apparatus and a method are disclosed that can be selectively operated with equal advantage to strip sheet material from either the top or the bottom of a stack. A translatable member having a generally planar surface formed of an electrically insulative material is disposed proximate to either the top or bottom of a stack of sheet material. A pair of electrodes in the form of an electronic grid is secured to the planar surface. A DC voltage is applied to the electrodes selectively to effect a highly intense electric field only close to the surface of the member. The intensity of the electric field can be varied in predetermined relation to the applied DC voltage so as to determine the number of sheets simultaneously removed from the stack. The electric field exerts an attractive force only on the end-most sheet or sheets of the stack so that said end-most sheet or sheets only will be stripped from the stack.
    Type: Grant
    Filed: January 3, 1983
    Date of Patent: July 2, 1985
    Assignee: Coulter Systems Corporation
    Inventors: Manfred R. Kuehnle, Robert M. Rose, John S. Ballas
  • Patent number: 4519396
    Abstract: Apparatus and method for continuously monitoring the fetal heart rate simultaneously using ultrasonic and electrocardiographic signals. The signals are continuously processed to provide an improved output fetal heart rate indication in terms of better continuity and accuracy.
    Type: Grant
    Filed: November 5, 1981
    Date of Patent: May 28, 1985
    Assignee: American Home Products Corporation (Del.)
    Inventors: Paul Epstein, John S. Ballas, Jr., John J. Mandler, Jr., Joseph M. Van Horn
  • Patent number: 4489726
    Abstract: Apparatus and method for continuously monitoring the fetal heart rate simultaneously using ultrasonic and electrocardiographic signals. The signals are continuously processed to provide an improved output fetal heart rate indication in terms of better continuity and accuracy.
    Type: Grant
    Filed: November 5, 1981
    Date of Patent: December 25, 1984
    Assignee: American Home Products Corporation
    Inventors: Paul Epstein, John S. Ballas, Jr., John J. Mandler, Jr., Joseph M. Van Horn
  • Patent number: 4299234
    Abstract: Apparatus and method for continuously monitoring the fetal heart rate simultaneously using ultrasonic and electrocardiographic signals. The signals are continuously processed to provide an improved output fetal heart rate indication in terms of better continuity and accuracy.
    Type: Grant
    Filed: March 30, 1979
    Date of Patent: November 10, 1981
    Assignee: Brattle Instrument Corporation
    Inventors: Paul Epstein, John S. Ballas, Jr., Joseph M. Van Horn, John J. Mandler, Jr.
  • Patent number: 4185205
    Abstract: A remote load controlling apparatus receives a disconnect signal on a line that is filtered and voltage limited. This disconnect signal sets a flip-flop which enables an oscillator and a solid-state switch. The enabled switch energizes a relay to disconnect the load from electric service. A counter counts the output of the enabled oscillator and provides a flip-flop reset signal after a local time delay that is determined by a particular incremented count state of the counter. The reset flip-flop disables the oscillator and solid-state switch to de-energize the relay and reconnect the load to electric service. The flip-flop may also be reset by a remote signal to disable the oscillator and solid-state switch and reconnect the load before the counter is incremented to its particular incremented count state. A second counter and a second solid-state switch may be added to ensure that the load is connected to electric service if a component of the apparatus should fail.
    Type: Grant
    Filed: May 9, 1978
    Date of Patent: January 22, 1980
    Assignee: American Science & Engineering, Inc.
    Inventors: Neil H. Jagoda, John S. Ballas, Klaus Kubierschky