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| Number | Title | Issue Date |
| 5939629 | Rotor balancing systems including superconductor bearings A method and system for balancing a rotary member. The system preferably comprises balancer stand, a stator element including and a levitation element. The rotary member is coupled with the levitation element. The rotary member and the levitation element ... | 08/17/1999 |
| 5894220 | Apparatus for microscopic imaging of electrical and magnetic properties of room-temperature objects A cryogenic apparatus for microscopy of physical properties of an object including a thin, stiff, transparent substrate or window within the outer wall of the vacuum space of a dewar and a cryogenic sensor within the vacuum space and spaced very close dis... | 04/13/1999 |
| 5872368 | Method of controlling a super conductor The order parameter of a superconductor is reduced by injecting spin-polarized carriers into the superconductor. The reduction in the order parameter is used to modulate the critical current of the superconductor. In a typical embodiment, a current is cau... | 02/16/1999 |
| 5744945 | Cryogenic fluid-level sensor A method of measuring a cryogenic fluid level utilizing a high temperature ceramic superconductor material driven above its level of critical current density. A high temperature ceramic superconductor is placed in cryogenic fluid and a voltage is applied ... | 04/28/1998 |
| 5593949 | High temperature conductor probes for determining liquid level of cryogens Method and arrangement for detecting the level of a liquid cryogen having a predetermined boiling point and which is being held in a container relative to the bottom of the container. The arrangement includes a container which receives the liquid cryogen ... | 01/14/1997 |
| 5589772 | Non-destructive eddy current sensor having a squid magnetic sensor and selectively positionable magnets A non-destructive testing equipment comprises a magnetic field generator for generating a uniform magnetic field, and a magnetic sensor accommodated in a thermal insulation container and filled with a liquid nitrogen. The thermal insulation container is l... | 12/31/1996 |
| 5552371 | YBA CUO-type superconducting material based apparatus for auto-filling liquid nitrogen An apparatus and method for continuously monitoring the liquid nitrogen level a liquid nitrogen container and automatically refilling liquid nitrogen from a liquid nitrogen reservoir when the liquid nitrogen in the container falls below a predetermined le... | 09/03/1996 |
| 5379110 | Method and apparatus for measuring surface characteristics of material The surface characteristics with respect to a high-frequency electromagnetic field of a material to be tested are measured by placing opposite a flat mirror material to be tested one of a pair of concave spherical reflection mirrors fabricated in the same... | 01/03/1995 |
| 5377126 | Non-contact temperature measurement of a film growing on a substrate Apparatus and method for non-contact temperature measurement of a film growing on a substrate which accounts for the change in emissivity due to the change in film thickness. The system employs an adaptively calibrated pyrometer wherein the substrate emit... | 12/27/1994 |
| 5293119 | Electromagnetic microscope for evaluation of electrically conductive and magnetic materials An instrument for non destructive evaluation (NDE) is called an electromagnetic microscope, formed by superconductive microprobes arrayed in parallel rows. When moved over a test piece, the array generates a scanned image of flaws, stress variations or ch... | 03/08/1994 |
| 5168457 | Apparatus for identifying and comparing lattice structures and determining lattice structure symmetries A converse transformation matrix generation approach is used either i) to late a lattice structure of one crystalline material to the lattice structure(s) of one or more other crystalline materials for determining interlattice relationships which allow ma... | 12/01/1992 |
| 5126655 | Apparatus for observing a superconductive phenomenon in a superconductor An apparatus for observing a superconductive phenomenon is disclosed. In the apparatus, a cooling unit cools a superconductor having a threshold temperature at which the superconductor changes from the normal conductive phase to the superconductive phase,... | 06/30/1992 |
| 5114907 | Cryogenic fluid level sensor A cryogenic level sensor assembly. A sensor assembly includes a continuous length of high temperature ceramic superconductor material, an exterior housing for holding the length of ceramic superconductor material, a support material disposed between the c... | 05/19/1992 |
| 5111140 | Apparatus and method for measuring repulsive displacement and repulsive force characteristics of a superconductor with respect to a magnet Characteristics of a superconductor such as a repulsive displacement of a superconductor against a magnet or a rotational resistance of the superconductor due to flux-pinning in the superconductor are measured by supporting the superconductor in a non-con... | 05/05/1992 |
| 5107119 | Method of evaluating characteristics of superconductors and process and apparatus for forming superconductor film by using the method A method of evaluating the characteristics of superconductors, comprising: irradiating light to a superconductor held at a predetermined temperature; detecting light transmitted through the superconductor and composing a spectrum of the transmitted light;... | 04/21/1992 |
| 5105667 | Strain measuring device employing magnetostriction and having a magnetic shielding layer In a strain measuring device employing a magnetic permeability detector means to detect an amount of strain in a passive member as changes of magnetic permeability in a magnetostrictive layer, a magnetic shielding layer is formed on the surface of the pas... | 04/21/1992 |
| 5103682 | Ultra-sensitive force detector employing servo-stabilized tunneling junction A highly sensitive force detector using a tunneling junction as a strain gauge is disclosed. The tunneling junction is connected to a deflection member which receives the force to be measured. The junction is connected in a nulling circuit to a magnetic f... | 04/14/1992 |
| 5066637 | Gyromagnetic-effect cryogenic gyroscope for detecting angular velocity A cryogenic gyroscope for detecting the angular velocity of a rigid system without reference to an external inertial system comprises a closed rigid casing made of a sueprconducting material and kept below its critical superconducting temperature, for exa... | 11/19/1991 |
| 5022275 | Strain measuring device employing magnetostriction and having a magnetic shielding layer In a strain measuring device employing a magnetic permeability detector means to detect an amount of strain in a passive member as changes of magnetic permeability in a magnetostrictive layer, a magnetic shielding layer is formed on the surface of the pas... | 06/11/1991 |
| 4939458 | Method and apparatus for quantifying superconductivity The invention relates to a novel apparatus for detecting as well as quantifying superconductivity characterized by a rigid-stemmed pendulum used to support the superconductive sample for free-swinging movement about a low-friction fulcrum in a magnetic fi... | 07/03/1990 |
| 4655079 | Level gauge for liquid helium A level gauge for liquid helium comprising a sensing element in the form of a ribbon wire made of superconductive alloys and a tube supporting the sensing element, which tube is inserted into liquid helium upon measurement. The superconductive alloys are ... | 04/07/1987 |
| 4567767 | Method and apparatus for very low temperature acoustic microscopy A method and apparatus for imaging objects utilizing acoustic waves at frequencies above 4.2 Ghz and up to 8 Ghz wherein the transducer and the object imaged by waves or beams from the transducer are both at a temperature no greater 0.2° K. The transduce... | 02/04/1986 |
| 4566323 | Liquid helium level indicating gauge Improved liquid helium level gauge is described. The gauge includes a resistance wire sustained vertically within a liquid helium container and an electrical indicating device for producing an indication which varies with the electric resistance of said r... | 01/28/1986 |
| 4563579 | Procedure for recording ion-cyclotron-resonance spectra and apparatus for carrying out the procedure In a procedure for recording ion-cyclotron resonance spectra or an apparatus for carrying out the procedure, gaseous ions of a sample substance in an ultrahigh vacuum are simultaneously exposed to a constant magnetic field BO and to a high freq... | 01/07/1986 |
| 4411270 | Apparatus and method for nuclear magnetic resonance scanning and mapping An improved apparatus and method for analyzing the chemical and structural composition of a specimen including whole-body specimens which may include, for example, living mammals, utilizing nuclear magnetic resonance (NMR) techniques. A magnetic field spa... | 10/25/1983 |
| 4393714 | Differential pressure sensor A differential pressure sensor comprises a housing having first and second inlets; a rod-shaped capacitive displacement sensor affixed to the housing in the interior thereof; a first electrode constituted by an end face of the displacement sensor; a secon... | 07/19/1983 |
| 4361038 | Liquid level sensor In a liquid level sensing apparatus having a stillwell in a liquid-holding tank disposed around the sensing device, a bubble shield is provided to interdict the upward flow of bubbles to the stillwell to protect the sensor from contact with bubbles or for... | 11/30/1982 |
| 4354499 | Apparatus and method for nuclear magnetic resonance scanning and mapping An improved apparatus and method for analyzing the chemical and structural composition of a specimen including whole-body specimens which may include, for example, living mammals, utilizing nuclear magnetic resonance (NMR) techniques. A magnetic field spa... | 10/19/1982 |
| 4140021 | Method and device for monitoring superconducting system The explosion or destruction of a superconducting system which may occur when an abnormal state arises in any part of the system if allowed to develop into a catastrophic quenching is prevented by providing the system with an acoustic wave detecting devic... | 02/20/1979 |
| 4118984 | Liquid level indicator for an extremely low temperature-liquefied gas employing a superconductor wire In a liquid level indicator for an extremely low temperature-liquefied gas wherein a current is caused to flow through a superconductor wire immersed in the extremely low temperature-liquefied gas, a voltage across terminals of the superconductor wire is ... | 10/10/1978 |
| 4024396 | Method and apparatus for detection utilizing Rydberg levels Highly sensitive method and apparatus for photon detection in the microwave and infrared regions of the electromagnetic energy spectrum are shown in which atoms of a material in the vapor state are excited to a first Rydberg energy level by use of radiati... | 05/17/1977 |
| 3943767 | Level detector system for cryogenic liquids An improvement has been made to a cryogenic liquid level detection system of the type wherein a small electrical current is passed through a filament of superconducting material to generate a voltage proportional to the length of the filament above the li... | 03/16/1976 |
