Patents Represented by Attorney, Agent or Law Firm Robert P. Sabath
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Patent number: 4656601Abstract: A large bandwidth, tapped delay line (TDL) surface acoustic wave (SAW) adaptive processor arrangement, for processing a plurality of array values employed as tap weights in the TDL device. The weight quantities may be real or complex. In the complex case, no phase quadrature combiner is required as a result of the technique of offsetting the real and imaginary delay lines, or offset launching of the frequency waveforms to be mixed.Type: GrantFiled: October 29, 1984Date of Patent: April 7, 1987Assignee: United Technologies CorporationInventors: Sears W. Merritt, Thomas W. Grudkowski, Gary K. Montress
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Patent number: 4656438Abstract: A method and arrangement for enhancing the level of supplied microwave energy including a resonant ring capacitively coupled to a microwave coupling device effective for connecting to a microwave transmission line, the arrangement being mounted in a shield structure. Amplification is effected by IMPATT diodes capacitively coupled to the resonant ring. The microwave coupling device is variably setable with respect to the transfer structure, thereby promoting the establishment of impedance matching therebetween.Type: GrantFiled: March 19, 1984Date of Patent: April 7, 1987Assignee: United Technologies CorporationInventor: Samuel Levinson
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Patent number: 4653906Abstract: An optical strain measuring arrangement including an optical waveguide comprising first and second cores fixedly mounted with respect to a mechanical structure to be monitored, and a detection system for relating the contrast in light intensity emerging from said cores to a range of wavelengths to establish an indication of strain along the range of the optical waveguide.Type: GrantFiled: August 13, 1984Date of Patent: March 31, 1987Assignee: United Technologies CorporationInventors: James R. Dunphy, Gerald Meltz, Elias Snitzer
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Patent number: 4646324Abstract: A digital transmitter (13) for transmitting serial words of predetermined length at selected speeds for output at a plurality of parallel channels (120, 120'). The words selected for series transmission at said parallel output channels (120, 120') are sequentially repeatedly applied to a multiplexer (89) which forwards selected bits from these words at fixed and variably setable speeds to a selected shift register (101 or 102) and latch (105 or 106), combination for output transmission.Type: GrantFiled: February 11, 1985Date of Patent: February 24, 1987Assignee: United Technologies CorporationInventors: Rocco V. Albano, Ronald G. Durej
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Patent number: 4639093Abstract: A ferroelectric switchable bandwidth filter device for operation at millimeter wavelengths applicable for use as a component in radar systems. Electrode pairs pulse switch fields reversibly to flip-flop the optic axes of the ferroelectric material in several stages of the device from one domain state to the other.Type: GrantFiled: March 2, 1984Date of Patent: January 27, 1987Assignee: United Technologies CorporationInventor: Frederick Kubick
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Patent number: 4638323Abstract: In a slotted array antenna (12), an asymmetric ridge waveguide element (13) defining colliner radiating slots (16), said waveguide elements (13) defining a central hollow region (13') and an axial ridge (13") separating first and second series of side chambers (17' and 17") alternating in height with respect to each other, whereby production of second order beams of radiation from said antenna (12) is eliminated and much lower side lobe levels are produced when the element (13) is used in an array scanned in a plane perpendicular to the element axes.Type: GrantFiled: April 25, 1985Date of Patent: January 20, 1987Assignee: United Technologies CorporationInventors: Harold Shnitkin, Julius Green
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Patent number: 4638175Abstract: A power distribution system includes a plurality of power sources and load transfer units including transistors and diodes connected in series and leading to a common power output, each of the transistors being controller switchable subject to voltage levels of the respective input and output sides of said transistors, and the voltage and current level of said common power output. The system is part of an interconnection scheme in which all but one of the power sources is connected to a single load transfer unit, enabling the survival of at least a single power source with the failure of one of the load transfer units.Type: GrantFiled: July 3, 1984Date of Patent: January 20, 1987Assignee: United Technologies CorporationInventors: Michael P. Bradford, Gerald W. Parkinson, Ross M. Grant
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Patent number: 4636799Abstract: A scanner (13) of ferroelectric material (17) for redirecting a beam (22) of millimeter wavelength radiation. The scanner (13) includes parallel input and output sides with matching layers (44). Adjacent and opposite parallel wire grid electrodes (31') are addressed with opposite sense voltage pulses in order to redirect the domain orientation of crystals in selected regions of said ferroelectric material (17).Type: GrantFiled: May 3, 1985Date of Patent: January 13, 1987Assignee: United Technologies CorporationInventor: Frederick Kubick
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Patent number: 4596513Abstract: A tunable vibration absorber in a helicopter rotor hub arrangement with a central mass suspended in a symmetrical outer casing over the rotor hub, including an air spring for variably stiffly supporting said central mass in three dimensions.Type: GrantFiled: January 10, 1985Date of Patent: June 24, 1986Assignee: United Technologies CorporationInventors: Raymond G. Carlson, Robert A. Stone, Leo Kingston
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Patent number: 4595891Abstract: A microwave combiner arrangement for isolatingly combining a plurality of microwave inputs with pairs of isolation resistors, each of the resistors of a pair being combined to a common terminal. The common terminals are in turn interconnected by wavelength-long conductors. Adjacent pairs of inputs are additionally connected by quarter wavelength conductors to corresponding outputs. The outputs are in turn connected in half wavelength connections to a final output terminal.Type: GrantFiled: April 27, 1984Date of Patent: June 17, 1986Assignee: United Technologies CorporationInventor: Edward A. Cronauer
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Patent number: 4576441Abstract: A ferroelectric focussing and defocussing device for operation at millimeter wavelengths applicable for use as a component in radar systems. Electrodes direct fields reversibly and continuously modify the refractive character of the ferroelectric material of the device as incoming radiation seeks to proceed along the optic axis of the material. The device includes first and second material media sharing complementary sides with Fresnel contours.Type: GrantFiled: March 2, 1984Date of Patent: March 18, 1986Assignee: United Technologies CorporationInventor: Frederick Kubick
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Patent number: 4577100Abstract: An integrated optical pressure transducer having a diaphragm fabricated from a low-loss glass is positioned at the location where pressure changes are to be measured. An optical waveguide loop formed on one surface of the diaphragm acts as a ring cavity in which the difference between the resonating frequencies varies with pressure but not with temperature. Light energy is coupled into the waveguide loop from an optical source through a tangentially located input waveguide. An output waveguide, also tangentially located, couples light energy from the waveguide loop to a broadband detector so that the changes in frequency spectrum of the resonating frequencies within the waveguide loop can be monitored.Type: GrantFiled: December 27, 1983Date of Patent: March 18, 1986Assignee: United Technologies CorporationInventors: Gerald Meltz, Louis B. Allen, Jr., Carl M. Ferrar
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Patent number: 4562769Abstract: A precision weapon aiming system used in conjunction with an optical radar for a weapon includes a pattern projector mounted to direct preselected optical pulses along the boresight of the weapon. A boresight receiver in the optical radar generates quadrature signals in response to radar returns reflected from the target. The azimuth and elevation of the weapon is varied until the magnitude of the quadrature signals are equal, thereby aligning the weapon boresight on the target.Type: GrantFiled: December 27, 1983Date of Patent: January 7, 1986Assignee: United Technologies CorporationInventors: Hans A. Heynau, Charles F. Hoover
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Patent number: 4559628Abstract: A boundary-controlled aerodynamic window positioned adjacent the exit aperture of a gas laser is transparent to the laser beam emitted from the cavity of the laser. The boundary-controlled aerodynamic window is formed by a high velocity gas flow directed by a duct across the exit aperture for the laser beam isolating the low pressure region of the cavity from the high pressure of the atmosphere. The exit aperture is enlarged and an auxiliary gas flow injected along the sidewall of the duct adjacent the exit aperture to expand the thickness of the boundary layer. In a second embodiment, particulate matter is fixedly attached to the sidewall of the duct to increase the roughness of the wall surface. A third embodiment uses a plurality of nozzles, each injecting gas with a predetermined velocity.Type: GrantFiled: April 26, 1983Date of Patent: December 17, 1985Assignee: United Technologies CorporationInventors: Bruce V. Johnson, Roy N. Guile
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Patent number: 4552071Abstract: A two-piece despin obturator mounted on a forwardly inclined obturator ramp on the projectile sidewall has a ring-shaped body of nylon-6 and a wiper band formed from Plascon nylon. The two-piece design is relatively immune to damage in the handling and loading process but yet the wiper band enhances low pressure sealing while the ring, driven up the inclined ramp in the firing process, engages the lands of the spiraled rifling. The rotational velocity imparted to the ring is partially coupled as the inner surface of the ring rotates on the obturator mount of the projectile.Type: GrantFiled: June 15, 1982Date of Patent: November 12, 1985Assignee: United Technologies CorporationInventors: Brian J. Horais, Joseph S. Kocur
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Patent number: 4551692Abstract: A dielectric substrate machined into a monolithic polarizer grating including structural support and matching regions, effective for transforming linearly to circularly polarized states of microwave radiation.Type: GrantFiled: March 28, 1984Date of Patent: November 5, 1985Assignee: United Technologies CorporationInventor: Peter W. Smith
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Patent number: 4546421Abstract: A flyback feedforward circuit for a pulse width modulated DC power supply in which the duty cycle is determined by varying the slope and peak amplitude of the sawtooth waveform under the influence of a weighted sum of input and output voltages.Type: GrantFiled: March 28, 1984Date of Patent: October 8, 1985Assignee: United Technologies CorporationInventors: Vincent G. Bello, Charles W. Sweeting
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Patent number: 4543549Abstract: A modular matrixed cylindrical rotary joint for transferring channeled electromagnetic energy from the stationary part of a radar system to its rotatable portion and an inner modular stator which supports the outer portion on redundant bearing modules.Type: GrantFiled: February 3, 1984Date of Patent: September 24, 1985Assignee: United Technologies CorporationInventors: Leonard A. Meltzer, Seymour Sutkin
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Patent number: 4536700Abstract: A boost feedforward circuit for a pulse width modulated DC power supply in which the duty cycle is determined by varying the error signal level with respect to the instantaneous level of a sawtooth waveform, under the influence of a feedforward portion of the input voltage.Type: GrantFiled: March 28, 1984Date of Patent: August 20, 1985Assignee: United Technologies CorporationInventors: Vincent G. Bello, Charles W. Sweeting
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Patent number: 4534062Abstract: A DC current injectable double balanced diode ring mixer circuit for radio frequency (RF) application. The diode ring includes eight diode elements and defines eight terminals including four symmetrical DC injection ports in conjugate pairs interleaved with four symmetrical RF inputs for phase and anti-phase application.Type: GrantFiled: January 30, 1984Date of Patent: August 6, 1985Assignee: United Technologies CorporationInventor: Samuel Levinson