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An aircraft having vertical takeoff and landing capability provided with at least first and second laterally extending paddle wheels rotatable on a central axis perpendicular to the longitudinal axis of the aircraft fuselage and between its nose and tail.
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| Number | Title | Issue Date |
| 7299823 | Connector A connector (1) connects an air-inflatable mattress (4) which alternately inflatable cells (11, 12) to a pump. Air-supply lines (13, 14) from the pump are attached to male parts (2) of connector (1). Air-supply lines (15,... | 11/27/2007 |
| 7014029 | Methods and systems for detecting coin fraud in coin-counting machines and other devices Methods and systems for detecting coin fraud in coin-counting machines and other devices that count and/or sort coins and other objects. In one embodiment, the method includes discriminating multiple coins to determine a number of real coins and a number of faux coi... | 03/21/2006 |
| 6761257 | Coin discriminating device, coin handling apparatus including such a device, and coin discriminating method A coin discriminating device has a first camera for producing a first image of a first surface of a coin, a second camera for producing a second image of a second surface of the coin, and a processor, e.g. a computer, which is operatively connected to the first and ... | 07/13/2004 |
| 6668999 | Coin sensor A coin sensor is provided for more accurately assessing the authenticity of a coin passing through a vertical channel where the channel is sized to accommodate different diameter coins. In the present invention, magnetic coils are deployed on the side of ... | 12/30/2003 |
| 6634482 | Bill and coin checker Improved currency scanners for coins and bills which are connected to computers having memories which contain information concerning coinage or printing errors and scarce coins or bills and which compare each coin or bill as it is scanned to identify and ... | 10/21/2003 |
| 6536578 | Sensor for coin acceptor A sensor for a coin acceptor includes an inductor connected in a series resonant circuit. The sensor coils are arranged in a series resonant configuration with the resonant capacitance made up of two identical capacitors, one on either side of the sensor.... | 03/25/2003 |
| 6079262 | Coin identification procedure The energy of the sound radiation caused by the impact of the coin to be analyzed upon a hard surface is split into different frequency bands, the energy of every such band is obtained and the ratios between them are then worked out, obtaining parameters ... | 06/27/2000 |
| 5400891 | Coin testing mechanism A coin testing mechanism of the kind provided with a removable and replaceable cassette is described. The coin testing mechanism includes a plurality of coin storage tubes and means for dispensing coins from the storage tubes, and the removable cassette i... | 03/28/1995 |
| 5133019 | Systems and methods for illuminating and evaluating surfaces Systems and methods for illuminating an object surface with light at varying angles of incidence and for optically evaluating the object surface for features and defects, etc. are disclosed. In a specific implementation the systems and methods, the target... | 07/21/1992 |
| 5048662 | Coin discriminator A coin discriminator discriminates a genuine coin from a counterfeit on the basis of a real component and an imaginary component of an impedance of the coin produced from a high frequency alternating current bridge circuit and decides an amount of the coi... | 09/17/1991 |
| 4998610 | Coin detector and counter A coin detector and counter comprising a coreless oblong transmitter coil and a coreless oblong receiver coil spaced apart on opposite sides of a coin path arranged to cause the entire diameter of each coin to pass between the coils. The maximum peak volt... | 03/12/1991 |
| 4899392 | Method and system for objectively grading and identifying coins A method and system for accurately and objectively evaluating the numismatic quality of a test coin and/or for fingerprinting the test coin for purposes of identification is disclosed. Central to both the grading and fingerprinting aspects of the inventio... | 02/06/1990 |
| 4845994 | Coin testing apparatus An apparatus for testing a coin provides first, second, and third digital signals respectively indicative of the coin's metallic content, diameter, and thickness. A microprocessor-based control circuit identifies the coin as being one of a number of known... | 07/11/1989 |
| 4838405 | Coin checking device for discriminating denomination of a coin and detecting a coin abnormality A coin discriminating device which can carry out accurate coin discrimination free of error caused by drift and changes in the thermal characteristics of the detecting elements. The coin type is discriminated by detecting data on the magnetic characterist... | 06/13/1989 |
| 4811040 | Numismatic detector A numismatic detector including a laser generator, a light collimator to form generated laser light into discrete beams, a coin holder to precisely position coins to be detected, and a film pack adapted to receive reflection of discrete light beams from t... | 03/07/1989 |
| 4774841 | Monitoring the level of a stack of coins The level of a stack of coins in a stack tube is monitored by an ultrasonic transducer disposed above the stack tube. The transducer directs a train of ultrasonic pulses down towards the top of the stack and measures the transit time between the emitted a... | 10/04/1988 |
| 4749074 | Coin sorting apparatus with reference value correction system A coin sorting apparatus in which the oscillation constants of oscillators change with the passage of a coin, and the amount of change in each of the oscillation constants or a value converted therefrom is compared with a reference value of a coin to be i... | 06/07/1988 |
| 4715223 | Device for testing properties of coins A device for testing the magnetic properties of coins in coin operated apparatus such as parking meters, used in conjunction with a coin diameter testing device. The device includes a double arm rocker lever provided on a side wall of a coin guiding duct.... | 12/29/1987 |
| 4509633 | Electronic coin validator with improved diameter sensing apparatus An improved electronic coin validator responsive to detect a plurality of different denominations of valid coins. The validator is constructed around a microcomputer (60). A single coil (30) in the tank circuit of an oscillator is used to determined conte... | 04/09/1985 |
| 4493411 | Self tuning low frequency phase shift coin examination method and apparatus A method and apparatus for coin examination which transmits on one side of a coin a low frequency electromagnetic field from a transmitter inductor which is part of a transmitter circuit, monitors the frequency of the low frequency electromagnetic field, ... | 01/15/1985 |
| 4471864 | Slug rejector A slug rejector in which a coin-testing oscillator provides, when a coin or slug passes through the field of its coil, an output in its linear range which is used to actuate a coin diverting gate. To stabilize the operation of the coin-testing oscillator,... | 09/18/1984 |
| 4462513 | Testing coins A coin testing apparatus comprises transmitting and receiving coils on opposite sides of a coin passageway. The transmitting coil is connected to high and low frequency oscillators. In the high frequency channel the signal is amplitude controlled by a vol... | 07/31/1984 |
| 4436196 | Method of and apparatus for assessing coins The invention relates to a coin validator for use in a micro-processor controlled call coin box telephone instrument. The validator comprises first and second coil sets driven by square wave interrogation pulses. The arrangement of the coils is such that ... | 03/13/1984 |
| 4398626 | Low frequency phase shift coin examination method and apparatus A method and apparatus for coin examination which subjects one side of a coin to a low frequency electromagnetic field from a transmitter inductor driven by an astable oscillator and frequency divider, receives a portion of the field on the other side of ... | 08/16/1983 |
| 4371073 | Coin checker for coins of varying diameter The coins (8) are thrown into a common coin channel and affect the field of a coil (2; 52). The coil core consists either of several U- or E-cores (54, 55) arranged at right angles to the coin travel direction (5) in direct or spaced-apart adjacency, or o... | 02/01/1983 |
| 4361218 | Coin testing apparatus A coin testing apparatus (10) comprises a coin passageway, a coin track (13) along which coins pass on their edges through the coin passageway and an inductor (16) adjacent the coin passageway. The inductor is connected in an oscillating circuit (40) so t... | 11/30/1982 |
| 4353453 | Valid coin acceptor for coin actuated apparatus An improved coin acceptor mechanism employing an oscillator and a resonant circuit for detecting the electromagnetic effect of valid and invalid coins passing through a coil of the tuned circuit. A particular linear coil configuration provides a unique si... | 10/12/1982 |
| 4353452 | Coin-handling device A detecting magnetic coil is mounted adjacent the authenticity-determining magnetic coil of an electronic slug rejector to distinguish between authentic coins and any copper slugs which might cause the authenticity-determining coil to produce an output wh... | 10/12/1982 |
| 4349095 | Coin discriminating apparatus A coin discriminating apparatus comprises two coils on opposite sides of a path for coins, one coil being connected to a signal generator so as to give repetitive abrupt flux changes and a gating device being provided for short circuiting the other coil b... | 09/14/1982 |
| 4335604 | Method and apparatus for the identification of coins or equivalent A method and an apparatus for testing and identifying electrically conductive discs, such as coins or equivalent. According to the method the effect of each coin on a magnetic field generated by means of coils is measured, the measurement result obtained ... | 06/22/1982 |
| 4334604 | Coin detecting apparatus for distinguishing genuine coins from slugs, spurious coins and the like A coin, spurious coin and the like is passed in close proximity with the inductance of the resonant tank circuit of an oscillator and varies the losses of the tank circuit and thereby the amplitude of a signal produced by the oscillator in accordance with... | 06/15/1982 |
| 4333557 | Solid state slug rejector For use in connection with coin-operated vending machines or the like having a coin lock-out coil or solenoid which accepts or rejects coins depending on whether the sole solenoid is energized or de-energized, a detector circuit comprising electromagnetic... | 06/08/1982 |
| 4326621 | Coin detecting apparatus for distinguishing genuine coins from slugs, spurious coins and the like The invention provides a multiple coin detecting apparatus for use in coin-operated machines for discriminating between denominations of coins and genuineness of coins, so as to exclude from operation of the machines any coins which have not been specific... | 04/27/1982 |
| 4254857 | Detection device A detector device adapted to be used for detecting coins and other metal objects for various purposes including to distinguish between genuine and non-genuine or counterfeit coins, the subject detector device includes an electric tank circuit having a coi... | 03/10/1981 |
| 4206775 | Coin sorting machine A coin sorting machine uses a plurality of impedance bridges each including an impedance element corresponding to a particular coin denomination and an element whose impedance is varied by the passage of a coin. The AC signal output from each bridge is co... | 06/10/1980 |
| 4184366 | Coin testing apparatus A coin testing apparatus is designed to accept and test a plurality of different coins, for example some or all of the coins of a particular currency. The apparatus stops an inserted coin in a predetermined position and tests its diameter, composition and... | 01/22/1980 |
| 4151904 | Coin detection device An apparatus for detecting objects such as coins and the like and for generating signal responses that depend on the metal content or other characteristics of the object or coin, which apparatus includes a detector circuit including an oscillator device h... | 05/01/1979 |
| 4134209 | Device and method for measuring coin die rotation error A device and a method for measuring the die rotation error of coins, which error occurs during the process of coining money, are disclosed. Die rotation error is one factor which determines the worth of coins to coin collectors, and this invention provide... | 01/16/1979 |
| 4058820 | Coins organized identification numbering system apparatus and method A device for mounting coins for photographic identification and cataloging employs a base mounted rotating table having angular indicia about the edge thereof and an angular reference indicator on the base. A platform for mounting the coin to be photograp... | 11/15/1977 |
| 3992938 | Device for comparative testing of the metallic content of coins or the like The invention relates to a device which holds a coin within a moving magnetic field and provides a means for determining the metallic content of the coin based upon the resultant eddy current losses generated in the coin. The moving magnetic field is prov... | 11/23/1976 |
