Patents Represented by Attorney David J. Zobkiw

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  • Molecular laser operating on fundamental and overtone bands
    Patent number: 4194169
    Abstract: Laser output from the fundamental, first overtone, and second overtone transitions in CO is achieved in a supersonic flow laser using an electric-discharge-excited CO/He/O.sub.2 mixture.
    Type: Grant
    Filed: November 25, 1977
    Date of Patent: March 18, 1980
    Assignee: Calspan Corporation
    Inventors: Joseph W. Rich, Richard C. Bergman
  • Enhancing radar returns from targets having a small radar cross section
    Patent number: 4193074
    Abstract: A method for locatingweak targets such as power lines and tree tops in the presence of terrain clutter by separating the weak target from the clutter in the elevation plane.
    Type: Grant
    Filed: December 3, 1974
    Date of Patent: March 11, 1980
    Assignee: Calspan Corporation
    Inventors: Edward C. Schwartz, Thomas F. Leney
  • Flow cell and method for continuously monitoring deposits on flow surfaces
    Patent number: 4175233
    Abstract: A demountable, rectangular, liquid sample flow cell is provided which can be used to make streaming potential or streaming current measurements from which the zeta potential is calculated. By providing an infrared transparent window in the flow cell, a real-time monitoring of surface deposition rates and amounts can be determined by infrared radiometry. Because the flow cell is completely demountable, direct analysis of the internal surfaces exposed to the flowing solution is possible.
    Type: Grant
    Filed: May 26, 1978
    Date of Patent: November 20, 1979
    Assignee: Calspan Corporation
    Inventors: Vito A. DePalma, Robert E. Baier
  • Fluid bed chaff dispenser
    Patent number: 4167008
    Abstract: The dispensing of the chaff fibers takes place in two distinct steps. Initially, a mixture of chaff and fluidization media is delivered to a fluidization chamber. Bleed air from the jet engines is caused to flow through the mixture of chaff and fluidization media to thereby cause the chaff fibers to churn and become separated in the fluidization chamber. Valves located at the ends of the fluidization chamber open in response to pilot or onboard ECM system activation to dispense the pre-separated chaff fibers.
    Type: Grant
    Filed: September 23, 1976
    Date of Patent: September 4, 1979
    Assignee: Calspan Corporation
    Inventor: John E. Blickenstaff
  • Frangible projectile for gunnery practice
    Patent number: 4165692
    Abstract: A sintered projectile having the same ballistic characteristics as a conventional combat projectile is provided with controlled strength properties and predetermined breakage lines. As a result, small, high drag fragments are produced on impact which minimizes ricochet hazards and provides a safer practice round.
    Type: Grant
    Filed: October 25, 1977
    Date of Patent: August 28, 1979
    Assignee: Calspan Corporation
    Inventor: Robert H. Dufort
  • Continuous-wave range measurement apparatus
    Patent number: 4163233
    Abstract: Distance is measured with a tone modulated AM radio system by making a signal at the ranging tone frequency phase coherent with respect to the modulation on the RF signal at the input to the receiver by means of a product detector located ahead of the receiver of the transponder. In this way, a ranging tone phase is established which is a direct and accurate measure of the modulation phase (delayed by the propagation time) and is independent of any modulation phase shifts experienced in the receiver.
    Type: Grant
    Filed: November 7, 1977
    Date of Patent: July 31, 1979
    Assignee: Calspan Corporation
    Inventor: Harold D. Becker
  • Thermal-radiation excited vibrational-exchange pumped laser generator
    Patent number: 4163199
    Abstract: Thermal radiation, or any incoherent radiation at the desired wavelenths, is converted into laser energy by using radiant absorption from a radiation source by a cold gas. The cold gas absorbs vibrational energy while remaining otherwise cold, and exchange of vibrational energy between molecules at this low temperature causes population inversions.
    Type: Grant
    Filed: July 1, 1977
    Date of Patent: July 31, 1979
    Assignee: Calspan Corporation
    Inventor: Charles E. Treanor
  • VCO-Controlled phase lock system
    Patent number: 4159475
    Abstract: A phase coherent canceller for jamming suppression is provided with a variable controlled oscillator which is locked in frequency and phase to a reference local oscillator in a closed loop configuration.
    Type: Grant
    Filed: June 5, 1978
    Date of Patent: June 26, 1979
    Assignee: Calspan Corporation
    Inventors: Stephen N. Andre, Hendrik W. Prinsen
  • Method for the initiation of chemical reactions by low pressure optical pumping
    Patent number: 4142955
    Abstract: When using CO as the absorbing and lasing species for vibration-vibration energy transfer and subsequent vibration-vibration pumping, CO can be made to dissociate and subsequently form C.sub.2 with isotope separation, or CO may be made to chemically react with N.sub.2 to produce CN with isotope separation.
    Type: Grant
    Filed: September 14, 1977
    Date of Patent: March 6, 1979
    Assignee: Calspan Corporation
    Inventors: Joseph W. Rich, Richard C. Bergman, Charles E. Treanor
  • Catch basin interceptor
    Patent number: 4136010
    Abstract: A catch basin may be retrofit for isolating/diverting spills and/or initial storm runoff for the subsequent treatment or recycling of the collected material. A sloping, peripheral trough is provided in the catch basin and is connected to one or more storage or recovery tanks or the like. A plurality of catch basins may be provided with troughs connected to one or more common storage or recovery tanks.
    Type: Grant
    Filed: April 5, 1978
    Date of Patent: January 23, 1979
    Assignee: Calspan Corporation
    Inventors: Roland J. Pilie, Douglas B. Dahm
  • Gaseous discharge stabilization apparatus and method
    Patent number: 4132961
    Abstract: The electrical and mass efficiencies of an electrically excited flowing gas laser are improved by lining the discharge tube with a filler which minimizes the regions of slow or recirculating gas flow, and by utilizing a wire anode gas injector to feed laser gases into the discharge.
    Type: Grant
    Filed: March 31, 1977
    Date of Patent: January 2, 1979
    Assignee: Calspan Corporation
    Inventor: Richard C. Bergman
  • Method and apparatus for the continuous generation of metal vapor
    Patent number: 4129835
    Abstract: The generation of visible or ultraviolet chemical laser radiation is achieved by the vapor phase combustion of metal atoms. The vapor is formed in a precombustor and metal vapor is extracted from the precombustor and fed via a supersonic nozzle to the laser cavity where it is reacted with an oxidant to produce excited molecules and thereby lasing.
    Type: Grant
    Filed: November 26, 1976
    Date of Patent: December 12, 1978
    Assignee: Calspan Corporation
    Inventors: John W. Daiber, John W. Raymonda
  • Dispersive subprojectiles for chaff cartridges
    Patent number: 4129078
    Abstract: A chaff cartridge is made up of a plurality of chaff interpackets contained in subprojectiles. The subprojectiles are each provided with fins and the fins of each subprojectile in a chaff cartridge provide a different drag to cause the spacing out of the subprojectiles. The fins, additionally, cause the subprojectiles to rotate and thereby radially disperse the chaff.
    Type: Grant
    Filed: June 27, 1977
    Date of Patent: December 12, 1978
    Assignee: Calspan Corporation
    Inventors: Clayton J. Schneider, Jr., Ernest V. Ruda
  • Method and apparatus for transmitting facsimiles over telephone lines
    Patent number: 4128850
    Abstract: The quality of and/or transmission speed for fingerprint facsimiles transmitted over telephone lines are improved by image enhancement prior to transmission. Image enhancement is achieved by using a multi-element photodetector array and simultaneously processing the signals from the component elements of the multi-element photodetector to produce a binary video output indicating whether the center of the scan is on a ridge or a valley portion of the fingerprint.
    Type: Grant
    Filed: May 16, 1977
    Date of Patent: December 5, 1978
    Assignee: Calspan Corporation
    Inventor: Frederic P. Fischer, II
  • Impact sensitive safety-relief system for tank cars
    Patent number: 4126151
    Abstract: A frangible member isolates a rupture disc from a pressurized fluid system. Under abnormal conditions such as might be encountered in a crash or derailment, the frangible member breaks and thereby permits direct contact of the rupture disc with the fluid system. If the pressure is sufficient, this causes the rupturing of the disc and the venting of the fluid system down to atmospheric pressure.
    Type: Grant
    Filed: March 8, 1977
    Date of Patent: November 21, 1978
    Assignee: Calspan Corporation
    Inventor: Wendell A. Bullerdiek
  • Fingerprint identification system using a pliable optical prism
    Patent number: 4120585
    Abstract: A pliable optical prism for use in an optical imaging system such as a fingerprint reader where the prism is physically contacted and the nature of the contact determines the efficiency of the device. The pliable prism deforms under applied pressure to partially mirror the topographic configuration of the source of applied pressure.
    Type: Grant
    Filed: November 19, 1976
    Date of Patent: October 17, 1978
    Assignee: Calspan Corporation
    Inventors: Vito A. DePalma, Raymond W. King
  • Rotary compressor
    Patent number: 4076469
    Abstract: A rotary compressor having a pair of rotatable impellers in mating engagement in working chambers, each impeller having a plurality of constant cross-sectional profiles, each profile having a plurality of lobes and wells, the trailing well region of each profile communicating with the leading well region of an adjacent profile, an inlet communicating with the working chambers and an outlet located out of the plane of at least one of the profiles on each impeller.
    Type: Grant
    Filed: June 24, 1976
    Date of Patent: February 28, 1978
    Assignee: Calspan Corporation
    Inventor: Roger C. Weatherston
  • Fluid speed measuring apparatus
    Patent number: 4074570
    Abstract: This invention relates to low range fluid speed sensors for the measurement of fluid currents in any direction, down to near zero velocity for dense fluids. Two signals with a 90.degree. space phase relationship are used which permits the instantaneous resolution of the fluid speed vector into its two orthogonal components.
    Type: Grant
    Filed: March 15, 1977
    Date of Patent: February 21, 1978
    Assignee: Calspan Corporation
    Inventors: John L. Beilman, William R. Deazley
  • Apparatus for the detection of buried objects
    Patent number: 4072942
    Abstract: Apparatus for the detection of buried objects comprising a broadband, high resolution short pulse transmitter and a bistatic or monostatic noncontacting antenna for radiating the transmitted signal through the ground for reflection from a buried object, a sampling type receiver which reduces the bandwidth and center frequency of the received signal, and a locking circuit controlled by the first reflection from the ground or soil surface to thereby lock the range sweep to the soil surface and eliminate the effects of antenna height variations.
    Type: Grant
    Filed: November 11, 1976
    Date of Patent: February 7, 1978
    Assignee: Calspan Corporation
    Inventor: Anthony V. Alongi
  • Fluid speed indicating apparatus and densitometer
    Patent number: 4065957
    Abstract: Fluid density is measured in a fluid speed indicating apparatus by using a pair of rotor arms having a pair of asymetrically located venturis or equivalent venturis. A steady state pressure difference will be produced between the two pressure locations and will be a function of the rotational velocity and fluid density. Since the rotational velocity is a known constant, the fluid density can be derived directly from the steady state pressure difference.
    Type: Grant
    Filed: November 15, 1976
    Date of Patent: January 3, 1978
    Assignee: Calspan Corporation
    Inventor: John L. Beilman