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| Number | Title | Issue Date |
| 7400260 | Optical system and element for detecting ice and water An optical system for detecting ice and water on the surface of an aircraft includes an elongated transparent optical element having first and second end portions. A light source and light detector are disposed in one end of the optical element and a reflective surf... | 07/15/2008 |
| 7369053 | De-icing information system A de-icing information system processes weather data indicating precipitation rate and temperature to determine a check time for a de-icing fluid. The de-icing fluid remains effective if applied after the check time, and the de-icing fluid may not remain effective i... | 05/06/2008 |
| 7312713 | Methods and systems for detection of ice formation on surfaces A system for detecting ice formation on metal, painted metal and other material surfaces can include a transparent window having an exterior surface upon which ice can form; a light source and optics configured and arranged to illuminate the exterior surface of the ... | 12/25/2007 |
| 7301478 | Vehicle safety warning device Apparatus, methods, system and devices for monitoring road surface temperature to detect hazardous road surface conditions. An indicator provides the sensed road surface temperature and hazardous road condition warning to a driver while a tail light interface automa... | 11/27/2007 |
| 7275441 | Method for ultrasonic inspection of generator field teeth A method for ultrasonically inspecting a generator field tooth for the detection, characterization and/or sizing of cracks thereat is disclosed. A monolithic piezoelectric transducer (MPT) productive of a test signal having a defined angle of refraction with respect... | 10/02/2007 |
| 7275442 | Method for ultrasonic inspection of generator field teeth A method for ultrasonically inspecting a generator field tooth for the detection, characterization and/or sizing of cracks thereat is disclosed. An electromagnetic acoustic transducer (EMAT) productive of a test signal having a defined angle of refraction with respe... | 10/02/2007 |
| 7269737 | System and method for biometric authorization for financial transactions The present invention is a system and method of biometric-based identity verification for authorizing financial transactions between a consumer and a merchant, said system comprising distributed processing to facilitate biometric matching and various types of financ... | 09/11/2007 |
| 7204142 | Liquid level detecting apparatus A guide pipe is formed from a metal material, and its internal cross section has a circular shape whose diametric dimension gradually becomes smaller with a distance from an ultrasonic sensor. That is, the guide pipe is formed so that a route for transmitting an ult... | 04/17/2007 |
| 7154398 | Wireless communication and global location enabled intelligent health monitoring system A wireless communication and global location enabled intelligent health monitoring system comprising of a plurality of wireless medical sensor apparatus that include an active sensor, a transducer, a digital-to analog converter, a frequency synthesis, a plurality of... | 12/26/2006 |
| 7129846 | De-icing information system A de-icing information system processes weather data indicating precipitation rate and temperature to determine a check time for a de-icing fluid. The de-icing fluid remains effective if applied after the check time, and the de-icing fluid may not remain effective i... | 10/31/2006 |
| 7104502 | Ice detector for improved ice detection at near freezing condition An ice detector for providing a signal indicating ice formation includes a probe protruding into an airflow. The probe extends into the airflow from a strut. The strut has one or more features which allow the probe to accrete ice at a higher temperature than would c... | 09/12/2006 |
| 7086834 | Methods and apparatus for rotor blade ice detection A method for detecting ice on a wind turbine having a rotor and one or more rotor blades each having blade roots includes monitoring meteorological conditions relating to icing conditions and monitoring one or more physical characteristics of the wind turbine in ope... | 08/08/2006 |
| 7043977 | Device and method for measuring parameters during flight tests of an aircraft A sensor support includes a rigid insert, on which a sensor is installed, and a flexible envelope fitted at a bottom face thereof with a double-sided adhesive to bond the sensor support to an aircraft structure Assembly and disassembly of the sensor are easy and the... | 05/16/2006 |
| 7026943 | Acoustic wave ice and water detector An acoustic wave sensor utilizes one or more acoustic waves trapped in an acoustic wave cavity to detect the presence of one or more substances on a surface of the acoustic wave cavity. To detect the presence of ice, a trapped torsional acoustic wave is used. To det... | 04/11/2006 |
| 6975735 | Sound collecting device minimizing electrical noise A sound collecting device is provided which is designed to minimize adverse effects on an output caused by exposure of an electroacoustic transducer to the air. The device includes an electroacoustic transducer and a vibrating circuit. The transducer is exposed to t... | 12/13/2005 |
| 6954146 | Method for determining a state of a road during the driving mode of a motor vehicle In a method for determining the state of a road during driving of a motor vehicle, the sound which is generated when a vehicle tire rolls on an underlying surface is sensed. A frequency signal is determined by means of a sound level signal which describes the sound,... | 10/11/2005 |
| 6885876 | Mobile phone featuring audio-modulated vibrotactile module A telecommunications network includes a mobile phone with an audio-modulated vibrotactile module that responds to a telecommunications signal containing information about incoming speech from a called/calling party, for providing an audio-modulated vibrotactile modu... | 04/26/2005 |
| 6847903 | Liquid water content measurement apparatus and method Ice accretion on a probe is detected by determining the change of frequency of a vibrating type ice detector or sensor as ice starts to build up. The rate of change of frequency is determined and is combined with parameters including air velocity and air temperature... | 01/25/2005 |
| 6759962 | Inflight ice detector to distinguish supercooled large droplet (SLD) icing An ice detector has a pair of probes, each of which is used for determining the accretion of ice thereon. One of the probes in the assembly is configured so the smaller droplets of supercoooled water are inertially separated and flow away from the one probe. The ice... | 07/06/2004 |
| 6560551 | Liquid water content measurement apparatus and method Ice accretion on a probe is detected by determining the change of frequency of a vibrating type ice detector or sensor as ice starts to build up. The rate of change of frequency is determined and is combined with parameters including air velocity and air ... | 05/06/2003 |
| 6378377 | Acoustic reflector attachment compatible with native aircraft structure An ultrasonic ice detector that can be mounted directly to the skin of an aircraft includes a transducer that is coupled to the interior surface of the skin, and transmits acoustic vibrational energy through the skin. A reflector bar having a reflector su... | 04/30/2002 |
| 6143090 | Method and device for de-icing an intake aperture Disclosed is an apparatus and a method for de-icing an intake opening (2) in an intake duct (1) of a fire alarm system, through which ambient or equipment air is drawn in and supplied to a detector for sensing a fire parameter. To effectively remove an ic... | 11/07/2000 |
| 5852243 | Method and apparatus for detecting a road pavement surface condition An apparatus for determining a road pavement surface condition over a wide area has a road noise sensor (12). A temporal frequency analyzer (18) converts a road noise signal from the road noise sensor (12) to a temporal frequency signal. A processing circ... | 12/22/1998 |
| 5772153 | Aircraft icing sensors An icing sensor utilizes a surface gap transmission line along which a radio frequency is transmitted. The phase delay of the radio frequency along the transmission line is dependent upon the dielectric constant presented at the surface in the gap between... | 06/30/1998 |
| 5695155 | Resonator-based, surface-condition sensor A sensor is provided for detecting the presence of dielectric media, e.g., ice. The sensor includes a plurality of microstrip resonators which are positioned for electromagnetic coupling with a microstrip transmission line. The resonators produce amplitud... | 12/09/1997 |
| 5686841 | Apparatus and method for the detection and measurement of liquid water and ice layers on the surfaces of solid materials An embodiment of the present invention is a roadway sensor for surface installation in a hole such that a thin ceramic contact sensor may be used to measure and cross-compare fundamental physical antenna parameters of the space immediately above a roadway... | 11/11/1997 |
| 5585551 | Method for identification of different states of water, and sensor arrangement for use in the method A sensor arrangement for identifying various states of water on a surface of a structure, comprises a sensor element and a transmitter-receiver unit. The sensor element, adapted to be placed on the surface, has two ends and is made of an acoustically cond... | 12/17/1996 |
| 5541733 | Method and apparatus for remote detection and thickness measurement of solid or liquid layer There is described a method and apparatus for detection and thickness evaluation of a buildup of a solid, e.g. ice, or liquid on a solid surface, such as ice on a body of an aircraft. The apparatus comprises a source of a narrow beam of radiation and a me... | 07/30/1996 |
| 5507183 | Ultrasonic method and apparatus for detecting and identifying contamination such as ice on the surface of a structure A method and an apparatus for detecting and identifying a contaminant, such as ice, on the surface of a structure, such as a wing, are disclosed. The apparatus has a probe having a delay block with an interface apt to be placed flush with the surface of t... | 04/16/1996 |
| 5474261 | Ice detection apparatus for transportation safety An embodiment of the present invention is an ice detection system that comprises a network of thin, flexible microstrip antennas distributed on an aircraft wing at critical points and multiplexed into a microcomputer. Each sensor antenna and associated el... | 12/12/1995 |
| 5467944 | Detector for indicating ice formation on the wing of an aircraft A detector indicating ice formation on the wing of an aircraft or any planear surface, based on a thread-like or a tape-like transducer, through which an ultrasonic signal is transmitted at one end. The attenuation of the signal having passed through the ... | 11/21/1995 |
| 5206806 | Smart skin ice detection and de-icing system The de-icing system of the present invention comprises a piezoelectric sensor means and a processor means. A piezoelectric film is the preferred sensor means and a microprocessor is the preferred processor means. In a preferred embodiment, a strip of piez... | 04/27/1993 |
| 5187980 | Method and apparatus for acoustic plate mode liquid-solid phase transition detection A method and apparatus for sensing a liquid-solid phase transition event is provided which comprises an acoustic plate mode detecting element placed in contact with a liquid or solid material which generates a high-frequency acoustic wave that is attenuat... | 02/23/1993 |
| 4891796 | Icing preventive device for ultrasonic wave transmitting and receiving unit for vehicle This invention provides an icing preventive device for a supersonic wave transmitting and receiving unit for a vehicle which is composed of a timing device for outputting a timing signal, a supersonic wave transmitting and receiving device for transmittin... | 01/02/1990 |
| 4891628 | Environmental matter detection system A matter sensing apparatus includes a piezoelectric transducer, having a face susceptible to matter accretions at a surface for which matter accretion detection is desired. The electrical circuit of the transducer is coupled in the feedback path of an amp... | 01/02/1990 |
| 4721949 | System for measuring glaze-ice by microprocessor with new release mechanism incorporated The disclosure describes a system for measuring glaze ice, comprising a glaze-ice detector, a device connected to the detector to generate a signal indicating the formation of a specific quantity of glaze ice on the detector, and another device which resp... | 01/26/1988 |
| 4628736 | Method and apparatus for measurement of ice thickness employing ultra-sonic pulse echo technique Method and apparatus for measurement of ice thickness employing ultra-sonic pulse echo technique, wherein an ultra-sonic pulse is emitted from a transducer at the ice-accreting surface of a structure, the pulse is reflected at the periphery of the accrete... | 12/16/1986 |
| 4611492 | Membrane type non-intrusive ice detector An ice detector of the vibrating element type comprises a tube that vibrates along its longitudinal axis, and is driven by an excitation coil at the natural frequency of the tube is sealed by a diaphragm which has a surface exposed to an air stream in whi... | 09/16/1986 |
| 4604612 | Ice detector An ice detector to detect a lyaer of ice on a thin solid sheet 14, such as the skin of an aircraft wing, even in the presence of water, comprises two ultrasonic transducers attached to the sheet. The first transducer 10 is adapted to cause propagation of ... | 08/05/1986 |
| 4570881 | Process for detecting the likelihood of ice formation, ice warning system for carrying out the process and utilization thereof An ice warning system comprising a diaphragm set into vibration at one of its frequencies of resonance by a piezoelectric cell. The diaphragm is coupled thermally to a metallic plate alternately cooled and heated respectively below and above the ambient t... | 02/18/1986 |
