Patents Represented by Attorney, Agent or Law Firm Glenn H. Lenzen, Jr.
  • Patent number: 6622605
    Abstract: A zero retention force arming apparatus and method used in conjunction with bomb racks, aircraft pylon, or other weapons release systems that use weapons which are armed by the pulling of a lanyard that provides for fail safe operation. The apparatus and method provides an arming unit which releases armed weapons with zero retention force; and it which releases unarmed weapons even in the event of a release system failure.
    Type: Grant
    Filed: January 30, 2001
    Date of Patent: September 23, 2003
    Assignee: Raytheon Company
    Inventors: Marcus Snell, Randall Pahl
  • Patent number: 6624720
    Abstract: A micro electromechanical system (MEMS) transfer switch for simultaneously connecting two radio frequency (RF) input transmission lines among two RF output transmission lines. The MEMS transfer switch includes a plurality of series MEMS switching units operatively arranged with the input and output transmission lines to selectively connect a first input to a first output and a second input to a second output, or the second input to the first output and the first input to the second output.
    Type: Grant
    Filed: August 15, 2002
    Date of Patent: September 23, 2003
    Assignee: Raytheon Company
    Inventors: Robert C. Allison, Jar J. Lee
  • Patent number: 6621948
    Abstract: A differential output optical fiber displacement sensor includes a structure subject to mechanical displacement over a displacement range. A pair of optical fibers is positioned so that the first optical fiber and the second optical fiber bend inversely to each other over at least part of the displacement range when the structure experiences mechanical displacement. The light transmitted through each of the optical fibers is measured, and a differential calculator determines the difference between the two transmitted light signals.
    Type: Grant
    Filed: June 4, 2002
    Date of Patent: September 16, 2003
    Assignee: Raytheon Company
    Inventor: Gabor Devenyi
  • Patent number: 6618007
    Abstract: In accordance with one aspect of the present invention, a preprocessor is provided for use in an adaptive antenna array. The purpose of the preprocessor is to modify the incoming signals received by each antenna of an antenna array in such a manner as to reduce the amount of computation necessary to compute the adaptive array weights. In an adaptive array, the weight computation process generally requires calculations using digital electronics, which tend to be computationally intensive when applied to wideband, high sample rate signals. The preprocessor of the present invention solves this problem by filtering the data in such a manner as to reduce the sample rate of the signal without losing the essential characteristics of the signal. The preprocessor includes an input terminal for receiving an electromagnetic signal from an antenna element of the adaptive antenna array, and a frequency smearer operatively coupled to the input terminal.
    Type: Grant
    Filed: June 4, 2002
    Date of Patent: September 9, 2003
    Assignee: Raytheon Company
    Inventor: Thomas W. Miller
  • Patent number: 6614386
    Abstract: A bistatic radar system and method. In the illustrative embodiment, a receiver is positioned in a horizontal plane. A transmitter is then positioned in Middle Earth Orbit at a position that is nearly vertical to the plane of the receiver. This configuration provides significant flexibility for the radar system. As such, the radar system may engage in flight patterns, in which the transmitter and receiver have velocity vectors in opposite directions (GMTI mode), the same direction (SAR mode) and variations in between (mixed mode). Lastly, a broad beam is generated from the transmitter and illuminates an area enabling several receivers to simultaneously observe the illuminated area.
    Type: Grant
    Filed: February 28, 2002
    Date of Patent: September 2, 2003
    Assignee: Raytheon Company
    Inventors: Kenneth L. Moore, Chester L. Richards, Pileih Chen
  • Patent number: 6614967
    Abstract: An optical fiber and an optical component, such as a collimating lens, are positioned along an optical axis. An alignment end of the optical fiber is first positioned so that the optical fiber axis is coincident with the optical axis, and visible light passing through the optical fiber is focused upon an imaging light detector, without the optical component present on the optical axis. The optical component is inserted onto the optical axis and coarse positioned using visible light transmitted through the optical fiber and through the optical component to be incident upon a light energy detector. The optical component is thereafter fine positioned using infrared light transmitted through the optical fiber and through the optical component to be incident upon the imaging light detector. The optical fiber and the optical component are thereafter fixed in position.
    Type: Grant
    Filed: August 14, 2001
    Date of Patent: September 2, 2003
    Assignee: Raytheon Company
    Inventors: Gabor Devenyi, Roger W. Ball, Kevin Wagner
  • Patent number: 6608584
    Abstract: A method and bistatic synthetic aperture radar (SAR) imaging system generate an image of a target area without knowledge of the position or velocity of the illuminator. The system includes an illuminator to illuminate a target area with a null-monopulse radiation pattern interleaved with a sum radiation pattern. The illuminator adjusts the phase terms of the sum radiation pattern to maintain a static electromagnetic field pattern at the target area. A receiver receives the radiation patterns reflected from the target area and generates phase compensation terms by correlating a measured electromagnetic vector field with the known static electromagnetic vector field. The phase compensation terms are used to generate an image of the target area.
    Type: Grant
    Filed: February 12, 2002
    Date of Patent: August 19, 2003
    Assignee: Raytheon Company
    Inventor: David A. Faulkner
  • Patent number: 6604366
    Abstract: A cryogenic cooling system (12) for cooling electromagnetic energy detectors (50). The cooling system (12) includes a first mechanism (18) that accommodates cryogen fluid in one or more spaces (58, 60). A second mechanism (16, 42) freezes the cryogen fluid in the one or more spaces (58, 60) adjacent to the electromagnetic energy detectors (50). In a specific embodiment, the electromagnetic energy detectors (50) comprise an infrared focal plane array (50). The second mechanism (16, 42) includes a heat exchanger (16) that is mounted separately from the first mechanism (18). The one or more spaces (58, 60) are fitted with three-dimensional cooling interface surfaces (62, 64). The three-dimensional cooling surfaces (62, 64) are implemented via a thermally conductive matrix (62, 64). The thermally conductive matrix (62, 64) is a copper metal matrix or carbon/graphite matrix, and the solid cryogen reservoir (18) is a beryllium reservoir (18).
    Type: Grant
    Filed: September 19, 2002
    Date of Patent: August 12, 2003
    Assignee: Raytheon Company
    Inventor: Kent P Pflibsen
  • Patent number: 6603427
    Abstract: A system and method for forming a beam and creating nulls. The inventive method combines frequency domain suppression technology for narrow-band jammer rejection with orthogonal weighting using Eigen analysis for jammer nulling and signal beam-forming for an array antenna system. The inventive system is adapted for use with an adaptive array antenna having a plurality of radiating elements. The system includes a frequency domain suppressor connected to the array antenna and an orthogonal weighting subsystem connected to the frequency domain suppressor. In the illustrative implementation, signals received by each radiating elements are processed by an analog front-end and digitized. The frequency domain suppressor includes a Fast Fourier transformer (FFT) and a frequency domain suppressor for each element in the array. The frequency domain suppressor further includes a threshold evaluator which reads the signals output by the FFT's and provides threshold controls to the spectral suppressors.
    Type: Grant
    Filed: June 27, 2001
    Date of Patent: August 5, 2003
    Assignee: Raytheon Company
    Inventors: Khiem V. Cai, Robert L. Hartman
  • Patent number: 6603897
    Abstract: A multiplexing device includes two facing-but-spaced apart optical transmitting plates, with optical reflective filters in facing contact with outer surfaces of the optical transmitting plates to define a reflective beam path therebetween. Light transceivers are associated with each of the optical reflective filters. The optical transmitting plates have greater indices of refraction than the central medium between them, so that the beam path has a low angle of incidence to the optical reflective filters but a higher angle in the central medium.
    Type: Grant
    Filed: October 22, 2001
    Date of Patent: August 5, 2003
    Assignee: Raytheon Company
    Inventor: Robert J. Scholz
  • Patent number: 6600453
    Abstract: An antenna system includes an array of notch radiators, arranged in aligned rows on longitudinal axes to define a series of troughs between adjacent notch radiator rows within an aperture area, each notch radiator including a tip region. A plurality of surface/traveling wave suppressors fabricated of microwave energy absorbing material is disposed in the troughs, so that a longest suppressor dimension is transverse or nearly transverse to the array face and so that a suppressor surface is transverse or nearly transverse to the longitudinal axes.
    Type: Grant
    Filed: January 31, 2002
    Date of Patent: July 29, 2003
    Assignee: Raytheon Company
    Inventors: John M. Hadden, IV, Robert G. Yaccarino, Lonny R. Walker
  • Patent number: 6597824
    Abstract: The invention is an optoelectronic (OE) crossbar switch (10) for both digital and analog signals, used either separately or combined, whose functions are reconfigurable and distributed. The invention allows multiple senders to be connected with multiple receivers simultaneously. The invention uses optical filters for wavelength division multiplexing and demultiplexing (WDM and WDD). A single fiber module input/output port carries multiple bi-directional signals that are optically filtered out in the module using WDM/WDD filters (12) at each sender/receiver and then selected after optical filtering using photodiode detectors (15) as detectors and switches. Laser transmitters (14), photodiode detectors (15), and smart electronics (18) are used to implement the crossbar switch functions.
    Type: Grant
    Filed: January 28, 2001
    Date of Patent: July 22, 2003
    Assignee: Raytheon Company
    Inventors: Irwin L. Newberg, Dwight J. Mellema
  • Patent number: 6587001
    Abstract: An electronic circuit device for driving a load comprises a load terminal, a control terminal and a power terminal for connection to a source of electric power. The load terminal may be in an emitter or a source circuit of the circuit device, and connects to a power supply return terminal by means of three electric elements connected in parallel, namely, the capacitance of a load, a bias current supply, and a current bypass. A voltage sensor is connected between the control terminal and the load terminal for sensing a voltage drop developed between the control terminal and the load terminal. The voltage sensor it is operative to activate the bypass to conduct current in parallel with current flow of the current source in the situation wherein the voltage drop exceeds a threshold. Thereby, the circuit device drives the load in one direction, and the current source and the bypass drive the load in the opposite correction.
    Type: Grant
    Filed: September 25, 2002
    Date of Patent: July 1, 2003
    Assignee: Raytheon Company
    Inventors: Richard H. Wyles, John L. Vampola
  • Patent number: 6584880
    Abstract: An electronically controlled arming unit including a logic circuit that is driven by the pre-existing weapons system signals to control a lanyard locking unit, thus removing the need for an external force to operate the arming unit. The electronically controlled arming unit can be retrofitted to the existing equipment.
    Type: Grant
    Filed: January 30, 2001
    Date of Patent: July 1, 2003
    Assignee: Raytheon Company
    Inventors: Randall Pahl, Marcus Snell, Carl Nicodemus
  • Patent number: 6581467
    Abstract: A portable gas purge and fill system. The inventive system (10) includes a portable housing having gas inlet and outlet couplings. An electronic pressure gauge (30) is disposed within the housing (11) for measuring the pressure of the fluid at the outlet (24) thereof. A self-check mechanism (32) is disposed within the housing (11) for verifying calibration and operation of the electronic pressure gauge (30). A pressure regulator (20) is disposed within the housing and connected between the inlet (12) and outlets (24) thereof. A second gauge (14) is included for measuring the pressure of the fluid contained in the source. First, second and third two-way valves (18, 22, and 28) are included. The first two-way valve (18) is mounted between the second gauge (14) and the pressure regulator (20). The second two-way valve (22) is located between the pressure regulator (20) and the outlet (24). The third two-way valve (28) is located between the pressure regulator (20) and the self-check mechanism (32).
    Type: Grant
    Filed: December 21, 1995
    Date of Patent: June 24, 2003
    Assignee: Raytheon Company
    Inventors: Erasmo Martinez, Earl Winter
  • Patent number: 6580561
    Abstract: A variable beamsplitter (10) for use with quasi-optical millimeter-wave beams. The beamsplitter (10) consists of a circular metal plate (20) into which a periodic array (30) of rectangular slots is cut. The plate (20) is arranged so that the incident millimeter-wave beam is incident at an angle of 45° relative to the surface of the plate (20). The polarization of the incident beam is parallel to the surface of the plate (20). When the orientation of the plate (20) is such that the electric field is perpendicular to the slots (i.e., the electric field is directed across the narrow dimension of the slots), the plate (20) transmits nearly 100% of the incident power. If the plate is rotated about its axis by 90° (while maintaining a 45° angle between the incident beam and the plate) so that the incident electric field is parallel to the slots, then the plate (20) transmits 0% and reflects nearly 100% of the incident power at an angle of 90° relative to the incident beam.
    Type: Grant
    Filed: August 23, 2001
    Date of Patent: June 17, 2003
    Assignee: Raytheon Company
    Inventors: David D. Crouch, William E. Dolash
  • Patent number: 6576891
    Abstract: A scanning system (10) and a method permit scanning a desired field-of-view within a maximized field-of-regard at a constant speed without reversing the scan direction about a primary axis (38). The system includes a mirror (20) which rotates about the primary axis (38). The mirror (20) is supported for rotation about a flip axis (40) which is perpendicular to the primary axis (38). Rotation of the mirror (20) about the primary axis (38) is divided into a scan period during which the field-of-view is scanned by the mirror (20), and a flip period during which the mirror (20) rotates about the flip axis (40). The mirror (20) is mounted in a gimbal for independent rotation about a secondary axis (24) which is parallel to the primary axis (38).
    Type: Grant
    Filed: February 16, 2001
    Date of Patent: June 10, 2003
    Assignee: Raytheon Company
    Inventor: David A. Ansley
  • Patent number: 6572327
    Abstract: A cylindrical article is positioned relative to a support surface by supporting the cylindrical article from a first pair of ball bearings contacting the cylindrical article adjacent to its first end, and a second pair of ball bearings contacting the cylindrical surface adjacent to its second end. At least one of the ball bearings is moved relative to the cylindrical article to reposition the cylindrical article. The repositioning may be performed under feedback control of actuators that move the ball bearings. The article may be fixed relative to the support surface after it is properly positioned.
    Type: Grant
    Filed: August 2, 2001
    Date of Patent: June 3, 2003
    Assignee: Raytheon Company
    Inventors: Roger Willard Ball, Brien Douglas Ross, Robert J. Scholz
  • Patent number: 6574055
    Abstract: An athermalization compensation device (26, 126, 226) includes a frustoconical outer ring (51, 251), with opposite edge portions (53, 54, 253) offset radially and axially, and with a relatively low coefficient of thermal expansion. An inner ring (52, 252) has a relatively high coefficient of thermal expansion. In response to a temperature change, the inner ring exerts on the radially inner edge of the outer ring a force which flexes the outer ring so that the inner edge moves radially and axially in relation to the outer edge, in a manner which changes an axial dimension of the device. In an alternative embodiment, the outer ring has circumferentially spaced slots (264) extending into it from its radially inner edge, and the inner ring has a respective portion (281) disposed in each slot.
    Type: Grant
    Filed: October 8, 2001
    Date of Patent: June 3, 2003
    Assignee: Raytheon Company
    Inventor: Charles R. Stallard
  • Patent number: 6569210
    Abstract: Fabrics are cleaned by treating at least a portion of the piece of fabric with a particulating chemical, and agitated by a gas jet of a particle-dislodging gas to dislodge the particulated soil. The particulating chemical loosens embedded non-particulate soil and converts it to a particulate form, which is then separated from the fabric by the particle-dislodging gas.
    Type: Grant
    Filed: July 14, 1999
    Date of Patent: May 27, 2003
    Assignee: Raytheon Company
    Inventors: Sidney C. Chao, Edna M. Purer, Nelson W. Sorbo