Patents by Inventor Robert I. Rudko

Robert I. Rudko 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: 5125926
    Abstract: A heart-synchronized pulsed laser system includes a laser; a device for sensing the contraction and expansion of a beating heart to be synchronized with the laser; a device, responsive to the device for sensing, for generating a trigger pulse; a control for positioning the leading edge of the trigger pulse during the contraction and expansion cycle of the heartbeat; a control for defining the width of the trigger pulse to occur during the heartbeat cycle; and a circuit responsive to the trigger pulse for firing the laser to strike the beating heart at the time indicated by the trigger pulse position and for the period indicated by the width of the trigger pulse.
    Type: Grant
    Filed: September 24, 1990
    Date of Patent: June 30, 1992
    Assignee: Laser Engineering, Inc.
    Inventors: Robert I. Rudko, Stephen J. Linhares
  • Patent number: 5109388
    Abstract: A long pulse, fast flow laser system and method in which a laser having a gas inlet and a gas outlet and electrical discharge electrodes has its inlet connected through a valve to a source of laser gas and its outlet connected to a vacuum. A control circuit opens the valve upon a request for laser firing. The valve permits the laser gas to flow through the laser to the vacuum at high speed. A high-voltage power supply is triggered, creating an electrical discharge across the electrodes. After the end of the laser pulse, the valve is shut to cut off the flow of laser gas and the vacuum is reconstituted.
    Type: Grant
    Filed: September 24, 1990
    Date of Patent: April 28, 1992
    Assignee: Laser Engineering, Inc.
    Inventor: Robert I. Rudko
  • Patent number: 4617668
    Abstract: In a laser using an electrical discharge produced between a pair of electrodes a catalyst is used for the recombination of gain medium components dissociated by the discharge. The catalyst material is confined by a catalyst container made of conductive material. The container has apertures smaller than the smallest catalyst particle and bigger than the molecule size of the gain medium. The conductive surface forms a cage which protects the catalyst, usually a powder, from the dispersing effects of the large electric fields present in the laser, and the aperture size allows the gain medium to contact the catalyst while preventing the catalyst powder from dispersing throughout the laser. The cage is placed adjacent the region in which the discharge takes place. Preferably, the cage is placed in contact with one of the electrodes in order to transfer heat from the electrode to the catalyst.
    Type: Grant
    Filed: May 7, 1985
    Date of Patent: October 14, 1986
    Assignee: Raytheon Company
    Inventors: Robert I. Rudko, James W. Barnie
  • Patent number: 4507788
    Abstract: A laser system capable of producing multiple pulses comprising a single optical resonator having multiple discharge regions and multiple sets of electrodes and preionizers. The optical resonator is folded and the beam passes through all of the discharge regions. Since the multiple discharges occur within the same resonator, multiple identical pulses are produced and since the discharge regions are separated, the shock wave and medium inhomogeneity produced by a discharge in one discharge region will not disturb the others. The overall mirror separation and electrode spacing define a Fresnel number suited for single transverse mode operation.
    Type: Grant
    Filed: March 29, 1984
    Date of Patent: March 26, 1985
    Assignee: Raytheon Company
    Inventors: James W. Barnie, Robert I. Rudko
  • Patent number: 4287483
    Abstract: A method for producing high peak energy radiation from a gaseous lasing medium excited by a main electric discharge which is transverse to the laser beam path. The main electric discharge current flows between elongated copper main electrodes positioned on opposite sides of the laser path and follows a pre-ionizing discharge between a plurality of copper elements positioned adjacent the optical path. The pre-ionizing discharge is selected in time and intensity to produce a gradation of temperatures along a thin layer of copper oxide formed on the copper elements and catalytically aiding in rapid recombination of carbon monoxide with the free oxygen which is produced by the discharge between the main electrodes.
    Type: Grant
    Filed: September 4, 1979
    Date of Patent: September 1, 1981
    Assignee: Raytheon Company
    Inventors: Robert I. Rudko, James W. Barnie
  • Patent number: 4176959
    Abstract: A spectrometer for measuring the spectra and concentration of airborne chemicals at long ranges wherein the optical signals may be occluded by dust. A single lasing medium is utilized both for producing a transmitted optical signal and for amplifying a received optical signal, the frequencies of radiation of the transmitted and received optical signals being offset as the radiation propagates to a distant reflector and back to the lasing medium. The frequency offset is obtained by sweeping the transmitted frequency at a rate commensurate with the round trip propagation time whereby the offset is sufficient to place the received frequency at a peak at the amplifying spectrum of the lasing medium. A laser containing the laser medium further incorporates an interferometric structure within the optical path for sequentially shifting the frequency of oscillation to produce a comb spectrum for sampling the spectra of the chemicals to provide identifying signatures thereof.
    Type: Grant
    Filed: April 17, 1978
    Date of Patent: December 4, 1979
    Assignee: Raytheon Company
    Inventors: Wayne H. Keene, Robert I. Rudko, Charles M. Sonnenschein