Patents by Inventor Paul A. Ryan
Paul A. Ryan 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).
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Patent number: 6347549Abstract: The location of weather activity from a moving platform such as an aircraft is enhanced using triangulation in time. More particularly, a first measurement of the weather activity is made relative to the aircraft at a first time. A second measurement of the location of the weather activity is made from the aircraft at a second period in time. The first measurement is modified or updated to correct for the change in position of the aircraft between the first and second measurements and then the modified data is compared with the data of the second measurement to enhance the location of the weather activity.Type: GrantFiled: March 24, 1999Date of Patent: February 19, 2002Assignee: Ryan International CorporationInventors: Paul A. Ryan, Dean E. Ryan
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Patent number: 6223123Abstract: Two pairs of signals determinative of bearing to a transmitter are developed from two pairs of directional antennas. The signals, converted to digital form, are compared to each other to develop a result signal. The result signal is used to select a primary pair out of the original two pair of signals. The non-primary pair of signals are compared to each other to develop a binary sign bit. The primary signal pair, the result signal and the sign signal are applied to a table to develop a bearing quantity related to the bearing to the transmitter.Type: GrantFiled: August 21, 1998Date of Patent: April 24, 2001Assignee: Ryan International CorporationInventors: Paul A. Ryan, Dean E. Ryan
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Patent number: 5552788Abstract: An antenna arrangement on a host aircraft for generating power signals related to a direction from which a transponder reply signal is received from a threat aircraft. The arrangement includes first and second monopole antenna elements arranged along a first axis of the host aircraft, third and fourth monopole antenna elements arranged along a second axis of the host aircraft, with the second axis being orthogonal to the first axis, a first quadrature combiner coupled to the first and second monopole antenna elements for generating first and second signals from the received reply signal, and a second quadrature combiner coupled to the third and fourth monopole antenna elements for generating third and fourth signals from the received reply signal. The respective power levels of the first, second, third and fourth signals are related to the direction from which the reply signal is received from the threat aircraft.Type: GrantFiled: June 30, 1995Date of Patent: September 3, 1996Assignee: Ryan International CorporationInventors: Paul A. Ryan, Dean E. Ryan
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Patent number: 5388047Abstract: A proximity warning device for aircraft responds solely to transmissions from transponders. The host aircraft has a host transponder and a signal is generated therein and coupled to the device to indicate transmission of a host reply. Selective suppression is implemented based on presence of an SSR beam which is indicated by the signal. Suppression pulses have a fixed duration but randomly selected intervening durations. Data collection proceeds without regard for suppression or the presence of host replies. The shaping of data collection intervals free of interference from suppression provides for improved efficiency for later data decoding and processing. The signal is used to specially mark collected data generated by a host reply. The ability to discriminate between host and other replies allows completely new performance monitoring functions. In one case, the health of the receiver is deduced from the amplitude of host replies.Type: GrantFiled: March 18, 1992Date of Patent: February 7, 1995Assignee: Ryan International Corp.Inventors: Dean E. Ryan, Paul A. Ryan, William C. Brodegard
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Patent number: 5157615Abstract: A passive aircraft Traffic alert and Collision Avoidance Device (TCAD) is based on sensing and responding to transponder replies of other aircraft to SSR interrogations. In order to avoid masking other aircraft replies by the host transponder TCAD repeatedly and randomly suppresses the host transponder and simultaneoulsly listens for other aircraft replies. Suppression on each occasion is effective for an equal and predetermined duration which is much longer than a typical replay, in a preferred embodiment the suppression/listen duration is 725 .mu.s. In this embodiment the time between successive suppression/listen occasions is random between 725 .mu.s. and 5.025 ms. with an average value of about 2.9 ms. Digital signal processing is used to detect and discard garbled or overlapping replies. Each valid reply, exhibiting a minimum pulse amplitude, is decoded and correlated with a calibrated range parameter and given a time tag.Type: GrantFiled: December 31, 1991Date of Patent: October 20, 1992Assignee: Ryan International CorporationInventors: William C. Brodegard, Dean E. Ryan, Paul A. Ryan
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Patent number: 5077673Abstract: A passive aircraft Traffic alert and Collision Avoidance device (TCAD) is based on sensing and responding to transponder replies of other aircraft to SSR interrogations. In order to avoid masking other aircraft replies by the host transponder TCAD repeatedly and randomly suppresses the host transponder and simultaneously listens for other aircraft replies. Suppression on each occasion is effective for an equal and predetermined duration which is much longer than a typical reply, in a preferred embodiment the suppression/listen duration is 725 .mu.s. In this embodiment the time between successive suppression/listen occasions is random between 725 .mu.s. and 5.025 ms. with an average value of about 2.9 ms. Digital signal processing is used to detect and discard garbled or overlapping replies. Each valid reply, exhibiting a minimum pulse amplitude, is decoded and correlated with a calibrated range parameter and given a time tag.Type: GrantFiled: January 9, 1990Date of Patent: December 31, 1991Assignee: Ryan International Corp.Inventors: William C. Brodegard, Dean E. Ryan, Paul A. Ryan
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Patent number: 4460645Abstract: This invention relates to insulation materials and, in particular, to thermal insulation materials having heat reflective properties.In particular insulation material according to the invention comprises a random array of elements as herein defined having at least a portion thereof deformed so as to increase the resilience of the elements and to assist in forming spaces between adjacent elements in the random array.In this specification the term element is used to include filaments of different cross-sectional shape, for example, circular, square or rectangular, strips of uniform or non-uniform width and/or thickness, flakes and platelets of regular or irregular geometric shape and of uniform or non-uniform thickness, and the like.Type: GrantFiled: March 2, 1981Date of Patent: July 17, 1984Assignee: University College CardiffInventors: John C. Jones, Anthony R. Bates, Roland Dewsberry, Paul A. Ryan
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Patent number: 4395906Abstract: A storm mapping system detects electrical activity caused by weather phenomona such as lightning strokes, and the like and displays information related to the electrical activity indicative of storm location in a frame of reference in which the observation location is taken as the origin. In order to give the observer good spatial understanding, signals detected from a relatively close disturbance (which produces relatively large signals) are displayed relatively close to the observation location as compared to display of signals generated from a relatively further disturbance which produces relatively smaller signals which are displayed relatively far from the observation location. The limited resolution display is effectively driven by signals read from digital storage wherein mapping between the different display segments and digital storage is maintained.Type: GrantFiled: January 16, 1981Date of Patent: August 2, 1983Assignee: Minnesota Mining and Manufacturing Co.Inventors: Paul A. Ryan, Kenneth A. Ostrander, David L. West
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Patent number: 4383260Abstract: A low profile electric field sensor is arranged to sense electric field potentials with respect to a local ground plane. The sensor includes an antenna in a generally planar format with a major dimension extending generally parallel to the local ground plane. To maintain signal to noise ratio, while at the same time minimizing the height of the antenna so as to provide a low profile, the antenna is coupled to a charge amplifier. The charge amplifier comprises an operational amplifier, preferably with a capacitor feedback between output and an inverting input, and the antenna is conductively connected to the inverting input.Type: GrantFiled: March 27, 1981Date of Patent: May 10, 1983Assignee: Minnesota Mining and Manufacturing Co.Inventor: Paul A. Ryan
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Patent number: 4023408Abstract: A storm mapping system detects electrical activity caused by weather phenomena such as lightning strokes and the like and displays information related to the electrical activity as indicative of storm location with reference to an origin which is taken as the observer's location. A cathode ray tube (or other display means) provides a display and locations thereon are illuminated in response to the electrical activity. The azimuth of the display is indicative of the azimuth of the electrical activity. The distance from the reference location to any illuminated location is a function of the signal strength. Although signal strength is not a precise indicator of distance, it is a useful data item in that the more severe storms generate the maximum signal strengths. In contrast to the prior art systems, the storm mapping system of this invention illuminates a location whose distance from the origin is inversely related to signal strength.Type: GrantFiled: June 10, 1976Date of Patent: May 17, 1977Assignee: Dytronics Company, Inc.Inventors: Paul A. Ryan, Nicholas Spitzer
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Patent number: 3943471Abstract: A digital tuning device for accurate selectable tuning of a resonant circuit. The inductive and capacitive elements of the resonant circuit are connected by a transformer device whose turns ratio is variable in accurate digital increments. Since the reflected reactance is related to the square of the turns ratio and since the resonant frequency varies as the inverse square root of the reactance, the resonant frequency of the circuit is directly related to the turns ratio.Type: GrantFiled: August 2, 1974Date of Patent: March 9, 1976Inventor: Paul A. Ryan
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Patent number: H1079Abstract: Polarization Control Networks (PCNs) are used in active solid-state array transmitters. Polarization ECM requires precise polarization control of the transmitted signal. Prior polarization control networks (vector modulators) use ferrite phase shifters to achieve low loss and wide bandwidth, but because of their large size they must be placed before the RF power distribution network of the array. By implementing the polarization control networks in MMIC technology for each antenna element, and integrating each PCN with a 2-3 watt amplifier at its input, it is possible to eliminate half the required feed network and active amplifiers from the system. Each polarization control network unit includes a plurality of thin film superconducting phase shifters, hybrids and transmission lines enclosed in a cryogenic package. If more power is required than the superconductive PCN can accommodate, the amplifiers can be placed after the PCNs, and still maintain size and performance advantages over current implementations.Type: GrantFiled: February 25, 1991Date of Patent: July 7, 1992Assignee: The United States of America as represented by the Secretary of the Air ForceInventors: Anthony W. White, Paul A. Ryan