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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 |
| 4649496 | Spectrum analyzer with improved data analysis and display features An automatic spectrum analyzer is provided with enhanced features for measured data handling and analysis. One feature allows the user to establish a sequence of operations to be performed at the end of each sweep of the instrument. Another feature enable... | 03/10/1987 |
| 4614117 | Vibration monitoring apparatus An apparatus monitoring the vibrations of a rotary machine precisely at all times. In a control processor, a rotational frequency is calculated with a data signal from a register which operates on the basis of period pulses from a key phaser, while a vibr... | 09/30/1986 |
| 4550603 | Abnormal noise detector for use in the inspection of gear units An abnormal noise detector for detecting abnormal noises resulting from a marred tooth surface in a gear of a gear unit is disclosed. A first embodiment of a detector comprises a microphone placed in the vicinity of a gear unit to be tested, a bandpass fi... | 11/05/1985 |
| 4550604 | Abnormal noise detector for inspecting gear units An abnormal noise detector for detecting abnormal noises produced by a gear unit with an eccentrically mounted gear is disclosed. A first embodiment comprises a microphone placed in the vicinity of a gear unit to be tested, a bandpass filter connected to ... | 11/05/1985 |
| 4429578 | Acoustical defect detection system The vibration of a moving device which has repetitive movements, for instance a rotary compressor, are sensed at the outer case and analyzed in real time in both the time and frequency plane. For the time analysis the envelope of the signal is generated; ... | 02/07/1984 |
| 4425798 | Apparatus for diagnosing abnormalities in rotating machines A portalbe apparatus is disclosed for the diagnosis of a rotating machinery utilizing a fast Fourier transform frequency spectrum analysis system. The presence or absence of an abnormality or trouble in the rotating machinery is determined by selecting hi... | 01/17/1984 |
| 4419900 | Machine health monitoring system A system employing structural moment detectors for collecting and interpreting data reflecting the effect of at least a selected one of a plurality of forces acting on a structure such as a machine tool. The output signals from the moment detectors are pr... | 12/13/1983 |
| 4413507 | Method and arrangement for determining tool wear In a method and apparatus for monitoring tool wear, noise emission signals associated with a cutting operation of the tool are monitored and evaluated to determine when the tool has become blunt. With the system disclosed, friction noises associated with ... | 11/08/1983 |
| 4413519 | Turbine blade vibration detection apparatus Turbine blade vibration detection apparatus having two or more extremely narrow beam radar sensors positioned to direct their radar signals towards predetermined blade row or rows. A blade identification circuit is provided for each blade row having an as... | 11/08/1983 |
| 4410970 | Method and apparatus for measuring and analyzing sound characteristics of record discs A method and apparatus for quantitatively measuring sound from a phonographic-type record disc and using such measurements to analyze the sound characteristics and to thereby improve the sound recording. Selection of one or more sound samples to be taken ... | 10/18/1983 |
| 4408285 | Vibration analyzing apparatus and method Apparatus and method utilized in carrying out vibrational analysis wherein the output of a vibration monitoring transducer is treated by filtering in stepped fashion over a broad spectrum of frequencies. The stepped filtering is provided utilizing minimum... | 10/04/1983 |
| 4380800 | Digital roughness sensor An engine roughness sensor for generating speed normalized digital roughness signals indicative of the variations in magnitude between successive torque impulses imparted to the engine's crankshaft by measuring the period or time it takes the crankshaft t... | 04/19/1983 |
| 4380172 | On-line rotor crack detection A method is disclosed by which incipient cracks are detected in the rotor of a fluid powered turbine while the turbine is on-line and running under substantially normal load. In a preferred form of the invention, vibrations are monitored in the rotor and ... | 04/19/1983 |
| 4344140 | Closed loop engine roughness control A closed loop engine roughness fuel control for an internal combustion engine operative to maintain the operation of the engine at a predetermined roughness level is disclosed herein. The control measures two rotational intervals within each torque impuls... | 08/10/1982 |
| 4322976 | Mechanical vibration analyzer A visual graphical display of instantaneous mechanical vibration versus frequency over a selected frequency spectrum is presented to provide a vibration analyst with a prompt overall visual impression of the mechanical vibration characteristics of a rotat... | 04/06/1982 |
| 4312232 | Vibration analyzer with digital readout A system for carrying out vibrational analysis of machinery and the like wherein a voltage controlled filter is combined with a phase-locked feedback loop to detect maximum amplitude within a given frequency band. A simply derived readout of frequency and... | 01/26/1982 |
| 4309903 | Method and apparatus for analyzing selected material properties with magnetomechanical acoustic emissions A method and apparatus for analyzing selected properties of a ferromagnetic material by magnetically inducing acoustic emissions in the material. The acoustic emission response is measured at a plurality of values of a selected response parameter, the res... | 01/12/1982 |
| 4285241 | Method and apparatus for the determination of the mass of an impacting object The impact signal derived from an acoustic transducer has a unique signature represented by its frequency spectrum. The present invention generates under predetermined conditions with objects, each of definite weight and form, a series of impact signals f... | 08/25/1981 |
| 4249421 | Method to determine the shear absorption of a rubberlike material The shear absorption of a viscoelastic material is determined by directing acoustical energy at the viscoelastic material and sampling the backscattered signals that result when compressional waves propagate through the material and are scattered by eithe... | 02/10/1981 |
| 4249422 | Apparatus and process for determining the composition of fluid-filled cavities An apparatus and method for determining the material properties characterizing a fluid contained in a cavity inside a solid comprises analyzing the resonances in the amplitude of elastic waves scattered by the cavity. Specifically, the resonance positions... | 02/10/1981 |
| 4184205 | Data acquisition system A data acquisition system utilizing a microcomputer and incorporating a plurality of monitors each adapted to produce an electrical signal indicative of a physical condition of apparatus to be monitored. The electrical signals are fed via multiplexing equ... | 01/15/1980 |
| 4174255 | Apparatus for locating defective nuclear fuel elements An ultrasonic search unit for locating defective fuel elements within a fuel assembly used in a water cooled nuclear reactor is presented. The unit is capable of freely traversing the restricted spaces between the fuel elements.... | 11/13/1979 |
| 4150568 | Apparatus and method for down hole vibration spectrum analysis An apparatus and a method are provided for detecting and measuring vibrations of a selected portion of a drill string in a bore hole. The vibrations are detected by a transducer which produces an electrical signal representative of the vibrations. The sig... | 04/24/1979 |
| 4007630 | Device for detecting damage on rotators There is disclosed a device for detecting damage on rotators or rotary bodies such as for example ball bearings having rolling elements. A mechanical vibration or sound produced periodically due to damage on the rotator when it is rotated is converted int... | 02/15/1977 |
| 4006625 | Amplitude sorting of oscillatory burst signals by sampling A method and apparatus for amplitude sorting of oscillatory burst signals is described in which the burst signal is detected to produce a burst envelope signal and an intermediate or midportion of such envelope signal is sampled to provide a sample pulse ... | 02/08/1977 |
| 4004450 | Device for measuring impact pulses A device for measuring impact pulses wherein an acceleration pickup converts the mechanical vibrations of an object into electric signals passing through an amplifier unit to a meter for measuring the parameters of the impact pulse. This meter comprises t... | 01/25/1977 |
| 3995500 | Logarithmic statistical distribution analyzer A device for measuring the statistical distribution within a discrete range f a measured continuous variable. A conventional type meter which employs a scaling amplifier in series with weighted filters, a true RMS detector and time averager is used to dete... | 12/07/1976 |
| 3971249 | Mechanical testing system A system for diagnosing the condition of mechanical equipment, and particularly the condition of bearings in rotating machinery. Vibrations from the mechanical equipment are detected by a wide range acoustical detector. A sweep voltage generator causes a ... | 07/27/1976 |
| 3948345 | Methods and means for analyzing substances In the method and means disclosed, an energy source applies energy of varying magnitude, to a substance being tested, and in a sufficient amount to produce detectable variations in a surrounding fluid. The frequency of the energy is varied. A pickup in th... | 04/06/1976 |
| 3934459 | Torque monitoring system for rotating shaft A monitor system is described which is capable of providing an output which indicates the oscillatory torque in each section of a multi-section shaft of a rotating system having plural masses. The system described is an electronic model of a mathematical ... | 01/27/1976 |
