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System for magnetically attaching templeless eyewear to a person
A system of eyewear that eliminates the need for hinges on the frames of the eyewear.
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| Number | Title | Issue Date |
| 7999540 | Eddy current apparatus and method for in-situ profile measurement An eddy current monitoring system may include an elongated core. One or more coils may be coupled with the elongated core for producing an oscillating magnetic field that may couple with one or more conductive regions on a wafer. The core may be translated relative ... | 08/16/2011 |
| 7372255 | Detection of the instantaneous position of a linearly reciprocating member using high frequency injection A piston position sensing circuit for sensing the instantaneous position of a piston of a free piston Stirling machine or a compressor mechanically connected to a reciprocating member of a linear electric motor or alternator. A source of a high frequency, alternatin... | 05/13/2008 |
| 7355392 | Printed circuit card-based proximity sensor and associated method of detecting a proximity of an object A proximity sensor assembly includes a multilayer printed wiring board proximity sensor, the proximity sensor being operable as either a variable-reluctance sensor or an eddy current loss sensor. The proximity sensor includes a plurality of layers configured to form... | 04/08/2008 |
| 7349679 | Integrated power amplifier A power amplifier develops a modulated high power signal by summing the outputs of multiple voltage controlled oscillators. A phase control circuit synchronizes the phase relationship of multiple voltage controlled oscillators. The voltage control oscillators provid... | 03/25/2008 |
| 7336069 | Eddy current sensor and sensor coil for the same The invention pertains to an eddy current sensor with a sensor circuit having a head portion, including a sensor coil, a base portion and a transmission cable connecting the head portion to the base portion. The transmission cable is a triaxial cable and the sensor ... | 02/26/2008 |
| 7298261 | Proximity sensor An operation section 2 is provided to a proximity sensor including: a detection section having an oscillation circuit 10; and an amplification section 2 having a function detecting a metal body using an oscillation amplitude of the oscillation c... | 11/20/2007 |
| 7295076 | Synchronously coupled oscillator A phase synchronous multiple LC tank oscillator is described. A plurality of oscillator stages are configured to oscillate synchronously. The phase of each of the plurality of oscillator stages is substantially the same and the plurality of oscillators are inductive... | 11/13/2007 |
| 7278569 | Combination refrigerator A dual side-by-side refrigerator having a courtesy section and a paid-vend section both cooled by a single cooling unit. A frontal door or double-hung doors are mounted at the front of the cabinet to cover both courtesy and paid-vend sections. An array of sensors in... | 10/09/2007 |
| 7265542 | Process and device for contactless measurement of rotational speed A process and a device for contactless measurement of rotational speed with a proximity sensor operating according to the eddy current principle. The proximity sensor comprises an inductor and a capacitor connected in parallel that form an oscillating circuit which ... | 09/04/2007 |
| 7256693 | Detector device The present invention relates to a detector device and, more particularly, to a detector device comprising a self-diagnosis means for monitoring the correct performance or otherwise of the device. During testing, the device, which normally operates using the Doppler... | 08/14/2007 |
| 7241630 | Paramagnetic particle detection A method of determining the number of magnetic particles within a sample using a tuned circuit having a capacitor and a coil. The method comprises: a. determining the difference in the resonant frequency of the tuned circuit when t... | 07/10/2007 |
| 7239133 | Methods and systems for controlling the temperature stability of an inductor Methods and systems a method of assembling a proximity probe are provided. The method includes determining a coil wire dimension and coil geometry for the probe such that a resistance versus temperature profile of the coil is approximately constant when the coil is ... | 07/03/2007 |
| 7209844 | Magnetic crash sensor A first magnetic field generated by a first coil operatively associated with a first portion of a vehicle interacts with at least one conductive element operatively associated with or at least a part of a second portion of the vehicle so as to generate an eddy curre... | 04/24/2007 |
| 7180286 | Hand-held device for non-destructive thickness measurement An apparatus for non-destructive measurement of the thickness of thin layers, has a housing and a probe which is connected to an evaluation unit and to which signals are emitted during a measurement for determining the layer thickness, and having a display apparatus... | 02/20/2007 |
| 7154349 | Coupled-inductor multi-band VCO A multi-band VCO employs a coupled-inductor based resonator having N≧2 ports. Each port has an inductor and at least one capacitor. The N inductors for the N ports are magnetically coupled. The inductors/ports may be selectively enabled and disabled to allow the V... | 12/26/2006 |
| 7145328 | Metal detector and its test procedure A test procedure and a metal detector having transmitting coils, receiving coils and an electronic processing circuit adapted to detect variations in the signals received by the receiving coils against a reference value. The metal detector, also includes a test modu... | 12/05/2006 |
| 7142113 | Method and apparatus to detect an external source A method and apparatus to detect an external source are described. ... | 11/28/2006 |
| 7129701 | Method of inductive proximity sensing A method of non-intrusive, inductive proximity sensing of a target through a conductive barrier comprises the steps of: disposing an inductive proximity sensor on one side of a barrier of conductive material; disposing a target on the other side of the barrier; dete... | 10/31/2006 |
| 7111374 | Door seal drilling and pinning Improved drilling and pinning machines and methods for processing elongate flexible e.g. rubber strips of seal material for forming seals about openings. The machines and methods form precisely positioned holes in the rubber strip, and insert pins in the holes. Oppo... | 09/26/2006 |
| 7113876 | Technique and electronic circuitry for quantifying a transient signal using threshold-crossing counting to track signal amplitude Circuitry adapted for carrying out associated techniques for: (a) calculating a damping factor, e.g., a damping ratio represented by ζ, or a quality factor Q, where ζ≈1/2Q, for a transient signal received, having been emitted from a resonator-type sensor element... | 09/26/2006 |
| 7103484 | Non-contact methods for measuring electrical thickness and determining nitrogen content of insulating films Non-contact methods for determining a parameter of an insulating film are provided. One method includes measuring at least two surface voltages of the insulating film. The surface voltages are measured after different charge depositions. Measuring the surface voltag... | 09/05/2006 |
| 7073683 | Apparatus and method for determining completion of a requested transaction in a vending machine A sensor for detecting and signaling whether a requested product is successfully vended is placed in a vending machine. The sensor determines whether a requested product passes through a defined “vend area” within a predetermined time interval after the customer... | 07/11/2006 |
| 7071685 | Induction sensor using printed circuit A planar induction sensor for sensing of security features of documents having changing magnetic and (or) conducting properties is of a multilayer printed circuit board design. The sensor comprises a planar current transformer with a spiral-type primary coils and on... | 07/04/2006 |
| 7068041 | Method and system for multi-frequency inductive ratio measurement A method of testing a cable is provided. The method includes measuring at least one inductive ratio for the cable, determining an inductive gap from the at least one inductive ratio, measuring a parallel impedance of the cable, and determining a resistance of the ca... | 06/27/2006 |
| 7061236 | Metal detector A metal detector has a circular excitation coil (10) through which foodstuffs to be tested (65) pass, on a conveyor belt (40). The excitation coil (10) is excited by a stable oscillator (50) and the lines of flux generated by the e... | 06/13/2006 |
| 7055738 | Device for accepting banknotes A device for accepting banknotes comprises a compartment for receiving a bundle of banknotes and a separating mechanism for extracting individual banknotes from the bundle. A sensor system for detecting metallic foreign bodies connected to the banknotes is arranged ... | 06/06/2006 |
| 7053785 | Security prescreening device An apparatus for prescreening an individual about to be subjected to a security screening including a magnetometer. The prescreening device comprises a base housing having a top panel, and a plurality of downwardly extending sidewalls. The base housing is adapted to... | 05/30/2006 |
| 7045764 | Passive detection system for detecting a body near a door A detection system for detecting a body near a doorway includes two detectors having one or more activation lines that overlap each other. With certain mounting arrangements, the detectors cover areas within and on both sides of the doorway. The detectors are meant ... | 05/16/2006 |
| 7014355 | Electronic parking meter system The field of the present invention is parking meters and more particularly to the use of electronically operated parking meters coupled with a sensor for positively sensing unobtrusively the presence or absence of a vehicle in a specified parking space controlled by... | 03/21/2006 |
| 7005930 | Synchronously coupled oscillator A phase synchronous multiple LC tank oscillator includes a plurality of oscillator stages that are configured to oscillate synchronously. The phase of each of the plurality of oscillator stages is substantially the same and the plurality of oscillators are inductive... | 02/28/2006 |
| 7005851 | Methods and apparatus for inspection utilizing pulsed eddy current In some aspects, the present invention provides a method for estimating at least one measurement/object property of a metal object. The method includes generating a time-varying eddy current in a wall of the metal object utilizing a pulsed-signal transmitter. The me... | 02/28/2006 |
| 6993890 | Method and apparatus for detecting unique items during insertion into a product packaging system A novel method and apparatus of detecting unique items as they are inserted into a product packaging system that is easily adaptable to current product packaging and prize insertion systems. A number of different types of sensors may be used in conjunction with the ... | 02/07/2006 |
| 6984994 | Position and electromagnetic field sensor A position and electromagnetic field sensor is provided. The sensor relies upon an oscillator such as a Robinson marginal oscillator to generate an rf or microwave electromagnetic field. As an inhomogeneously shaped object, such as a metallic toothed wheel, for exam... | 01/10/2006 |
| 6975108 | Methods and devices for eddy current PCB inspection A non-contact printed circuit board (PCB) electromagnetic testing system comprises at least one high resolution transducer operative to induce multi-frequency, multi-amplitude eddy currents in a tested PCB, each such transducer including both a high frequency excita... | 12/13/2005 |
| 6948388 | Wireless remote sensor A sensing system includes a ring oscillator that emits electromagnetic radiation at a characteristic frequency. The ring oscillator comprises an odd number plurality of inverters that are electrically connected in series. The sensing system also comprises a temperat... | 09/27/2005 |
| 6933846 | Displacement sensing system A displacement sensing system including an oscillator circuit having a characteristic frequency which varies as a function of a magnetic field in the vicinity thereof, an element whose position relative to the oscillator circuit is varied by a displacement, the elem... | 08/23/2005 |
| 6885277 | Externally adjustable impedance transformer An externally adjustable RF impedance matching mechanism comprises an upper lid and a base containing a circuit element board therebetween. One or more than one precise adjustment device for adjusting impedance value are provided under the upper lid. Impedance adjus... | 04/26/2005 |
| 6643909 | Method of making a proximity probe Method of making a proximity probe including providing a preform having an interior cavity accessible by an opened rearward end; coupling a coil to the preform proximate a forward most end of the preform for defining an assembly; locating a single support... | 11/11/2003 |
| 6600313 | Device for reading an elongate magnetic data carrier A device for reading an elongate magnetic data carrier attached to or embedded in an article, having an active read head adapted to have a lateral extent greater than the width of the data carrier, preferably four times greater, such that the magnetic fie... | 07/29/2003 |
| 6556090 | Oscillator circuit for a validator A coin validator tests a coin using a pair of coils coupled in an oscillator circuit which is arranged to drive both the coils concurrently at two separate frequencies without interference therebetween, each frequency signal being influenced by the presen... | 04/29/2003 |
