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5644922 |
Cylindrical chamber for the rapid cooling and warming of samples between room and cryogenic temperatures in a dry gas atmosphere
The cylindrical chamber allows one to quickly package a test fixture with attached sample, cool it to liquid-nitrogen temperature in a few minutes, and warm it back up to room temperature in a few...
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5642624 |
Super-conducting magnets
A super-conducting electro-magnet for use in an MRI system comprising a helium vessel within which magnet windings are positioned, a vacuum chamber within which the helium vessel is contained, at...
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5640853 |
Method for venting cryogen
A ceramic composite is provided comprising ceramic fibers and microparticles bound together as a porous matrix with a ceramic binder. The ceramic composite is particularly useful for transporting...
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5635888 |
Super-conducting magnets
A super-conducting magnet, particularly suitable for use with an MRI system is provided. The super-conducting magnet includes a closed loop former, a coil winding around the former of a material...
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5628195 |
Vibrationally isolated thermal system for a cryogenically cooled device
A cryogenic cold head in a canister is partially surrounded by an isolation mass. An open portion of the mass permits access for connection of a vapor compression refrigeration unit to the cold...
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5628196 |
Cryogenic cooling apparatus employing heat sink and diffuser plate for cooling small objects
Cooling apparatus has a cryogenic cooler which is connected thermally by a heat transfer system to a hot object to be cooled, wherein the heat transfer system is constructed of a cold finger, a...
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5625331 |
Superconducting deflection electromagnet apparatus
A superconducting deflection electromagnet apparatus for deflecting an electron beam includes a liquid helium reservoir 21 disposed outside of the magnetic shield 11 surrounding the cryostat 4...
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5623240 |
Compact superconducting magnet system free from liquid helium
In a superconducting magnet system which has a superconducting coil member, a cryocooler for cooling the superconducting coil member into the superconducting state, and a current lead for supplying...
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5615557 |
Apparatus for self-sufficiently cooling high temperature superconducting components
A cooling apparatus especially for cooling high-temperature-superconducting lectronic components includes a cold gas cooling machine, such as a Stirling machine, thermally connected to a pressure...
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5613366 |
System and method for regulating the temperature of cryogenic liquids
A relatively inexpensive system and method for regulating the temperature of a cryogenic liquid in a storage vessel (2), such as vehicle refueling station, comprises inner and outer walls (6, 8)...
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5611207 |
Cryogenic interface for perpendicular loading of independent measurement inserts
A cryogenically efficient interface which enables the quick loading of completely configured Independent Measurement Inserts in a direction perpendicular to the temperature gradient of a cryogenic...
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5611214 |
Microcomponent sheet architecture
The invention is a microcomponent sheet architecture wherein macroscale unit processes are performed by microscale components. The sheet architecture may be a single laminate with a plurality of...
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5606870 |
Low-temperature refrigeration system with precise temperature control
A low-temperature refrigeration system (10) is disclosed for accurately maintaining an instrument (11) with a time varying heat output at a substantially constant predetermined cryogenic...
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5598710 |
Superconducting apparatus and method for operating said superconducting apparatus
A superconducting apparatus is provided with a cryostat, a superconducting magnet contained in the cryostat, an emergency gas discharge pipe connected with the cryostat, and an emergency discharge...
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5590537 |
Dry gas curtain for cryogenic surface
An apparatus to provide a laminar curtain of dry gas over a cryogenic working surface includes a housing duct extending longitudinally from the working surface. A honeycomb member fills a section...
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5590538 |
Stacked multistage Joule-Thomson cryostat
A stacked multistage Joule-Thomson (J-T) cryostat is described in which each stage comprises a thermally conducting material plate member with fluid passages formed therein and in which the stages...
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5590536 |
Bypass cryogenic current leads employing high temperature superconductors
A cryogenic bypass current lead to bypass quenched magnets in a string of magnets in a superconducting super collider comprises a HTSC section interposed between a lower conductive body terminal...
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5586437 |
MRI cryostat cooled by open and closed cycle refrigeration systems
A MRI cryostat, which contains a superconducting magnet operating in a bath of liquid helium, reduces the boil-off rate of helium by intercepting most of the heat in-leakage by means of a throttle...
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5583472 |
Superconductive magnet
An object of the present invention is to obtain a superconductive magnet, the size of which can be reduced by shortening the radial length of a magnetic device thereof and the refrigerating...
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5568104 |
Open MRI superconductive magnet with cryogenic-fluid cooling
An open magnetic resonance imaging (MRI) magnet having first and second spaced-apart superconductive coil assemblies each including a toroidal-shaped coil housing containing a superconductive main...
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5564278 |
Thermally stable cryostat
A short-term thermally stable cryostat (40). The cryostat (40) pre-cools an incoming high-pressure gas, converts the gas to a cold liquid, and cools an item by allowing the liquid to acquire heat...
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5563369 |
Current lead
A superconducting magnet is arranged in a helium tank, and the superconducting magnet cooled to a very low temperature by liquid helium in the helium tank is connected to a power source kept at...
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5561984 |
Application of micromechanical machining to cooling of integrated circuits
A thermodynamic engine comprises first and second heat exchange members and a solid state thermodynamic member therebetween. At least one of the heat exchange members is formed by use of...
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5563566 |
Cryogen-cooled open MRI superconductive magnet
An open magnetic resonance imaging (MRI) magnet having longitudinally spaced-apart superconductive main coils surrounded by a dewar containing a cryogenic liquid (e.g., liquid helium) and...
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RE35333 |
Infrared detector
An infrared detector wherein an infrared detecting device can be cooled efficiently without increasing thermal stresses generated in the device body owing to cooling during the operation of the...
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5551243 |
Superconductive magnet for magnetic resonance systems
A super conducting magnet system for magnetic resonance systems comprising at least one radiation shield. Temperature sensors, an external refrigeration system and a controller are provided for...
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5542256 |
Sample holding device
A sample holding device (30) for a dilution refrigerator having a still (16), a mixing chamber (22), and a heat exchanger (26) connected between the still and mixing chamber whereby coolant flows...
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5542254 |
Cryogenic cooler
An improved cryogenic cooler 100 includes a flange 106 with an elongated pressure vessel 120 extending therefrom. The pressure vessel 120 is connected to the flange 106 at a proximal end thereof....
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5537829 |
Cryostat assembly
A cryostat assembly having an outer vessel within which is provided substantially upright inner vessel for containing an item, such as an electromagnet, to be cooled. The inner vessel is suspended...
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5533342 |
Semi-automated cryostat
The present invention provides a system and method for freezing and cutting a tissue specimen for medical diagnostic purposes which comprises a specimen block holder for holding the tissue...
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5532663 |
Support structure for a superconducting coil
A superconducting device, such as a superconducting rotor for a generator or motor or a superconducting magnet for a magnetic resonance imaging machine, etc. A vacuum enclosure surrounds and is...
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5530413 |
Superconducting magnet with re-entrant tube suspension resistant to buckling
A superconductive magnet having a superconductive coil located within a thermal shield located within a vacuum enclosure. A magnet re-entrant support assembly includes an outer support cylinder...
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5524441 |
Lead-in module for the supply of a low critical temperature superconducting electric load
Lead-in module for the supply of a low critical temperature superconducting electric load The module (3) is located inside a cryostat (1), it is fixed to its sealing cover (2) and it comprises a...
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5522226 |
Positive retraction mechanism for cryogenic thermal joints
A positive retraction mechanism for cryogenic thermal joints including deformable interfaces to separate joints which have cold welded utilizing a moveable enclosing sleeve and an actuating...
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5513498 |
Cryogenic cooling system
A cryogenic cooling system includes a cryocooler coldhead having a cold stage. A gas circulator has a low pressure input orifice and a high pressure output orifice, and a valve has a primary port...
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5497828 |
Solid conductor thermal feedthrough
A thermally conductive feedthrough has a conductive member extending through a fiber-reinforced plastic plate. The feedthrough is sealed against leakage from one side of the plate to the other by...
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5493865 |
Method and apparatus for vitrification of water or moisture-containing test samples, particularly biological samples
To vitrify a sample, for example a biological sample which has a high water content, without the formation of ice crystals, the sample (10) is placed in a closed test chamber (11) having a chamber...
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5488832 |
Matched thermal expansion support system
A matched thermal expansion support system for cryogenically cooled x-ray spectrometers is described for the purpose of holding x-ray detecting crystals precisely in position throughout large...
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5485730 |
Remote cooling system for a superconducting magnet
A cooling system for a superconductive magnet. A cryocooler coldhead and a compressor are remotely located from the magnet. A helium-gas conduit circuit has five helium-gas paths. The first path...
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5477693 |
Method and apparatus for cooling an oxide superconducting coil
A method and an apparatus for cooling an superconducting material below the boiling point of liquid nitrogen by using liquid nitrogen as coolant. The cooling method of the invention can be used in...
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5471844 |
High dissipation packaging for cryogenic integrated circuits
A packaging apparatus used to store semiconductor devices with a coolant without contaminating the semiconductor devices. The apparatus has an enclosure which is evacuated at room temperature and...
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5469712 |
Device for dehydrating and/or embedding samples
Device for dehydrating and/or embedding preferably frozen samples, comprising a Dewar vessel (1) filled with liquid nitrogen (2) and a metallic element (4), anchored to the floor (3), of material...
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5469711 |
Cryogenic packaging for uniform cooling
A cryogenic package provides a cryogenic environment for devices that require temperatures of 150 K or below, with uniform cooling and minimal thermal stress. A cryocooler produces cold gas on a...
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5465582 |
Cryogenic liquid dispensers
An apparatus for dispensing a cryogenic liquid includes means for focusing a beam of energy, eg. laser energy from a source onto the liquid cryogen as it passes through an outlet from a cryogenic...
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5463872 |
High performance thermal interface for low temperature electronic modules
A device and method for cryogenic cooling of electronic components. A mixture of a first non-condensible gas and a second condensible gas is provided within an insulative housing. The...
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5461873 |
Means and apparatus for convectively cooling a superconducting magnet
Apparatus and methods for cooling a superconducting magnet by circulating a pressurized helium gas through a convective cooling loop by natural convection, and apparatus and methods have been...
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5457961 |
Crysostat for very stable temperature maintenance
In a cryostat, an isothermal boundary is proximate a large plurality of devices that are being cooled. The barrier is slightly colder than the devices so that heat flux therebetween is very small....
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5456084 |
Cryogenic heat exchange system and freeze dryer
A cryogenic heat exchange system and freer dryer incorporating the same. The cryogenic heat exchange system has a heat exchanger provided with at least one pass for receiving a cryogenic heat...
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5452584 |
Method of freezing biological tissue specimens with opti-cryo-fluid
Disclosed is an improved method for freezing biological specimens, such as human tissues, animal tissues, and plant tissues. The specimens are frozen so that they may be presently examined with...
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5447034 |
Cryogenic refrigerator and regenerative heat exchange material
A cryogenic refrigerator includes a first refrigerant filled in a final refrigerating force storage chamber on a high temperature side thereof and consisting essentially of a composition expressed...
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