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7354434 |
Method of controlling the temperature of gasses passing through a Joule-Thomson orifice
The present invention relates to apparatus, systems, and methods utilizing cryogenic cooling in an angioplasty balloon catheter for treatment of arterial stenosis and prevention of restenosis. More...
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7318318 |
Superconducting magnet system with refrigerator
A cryostat ( 1 ) with a first helium tank ( 4 ) which contains helium at an operating temperature T 1 <3K, and a second helium tank ( 2 ) which is connected to the first helium tank ( 4 ) and...
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7254959 |
Joule-Thomson effect air conditioner using air as the refrigerant
An air conditioning system has a compressor for generating compressed air that is delivered to Joule-Thomson orifice with the compressed air flowing therethrough becoming refrigerant air sent...
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7178345 |
Stacked-plate gas-expansion cooler assembly, fabrication method, and use
A gas-expansion cooler assembly has an expansion structure with an expansion orifice and an expansion reservoir in fluid-flow communication with an expansion-orifice outlet. A heat exchanger has a...
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7090816 |
Low-delta P purifier for nitrogen, methane, and argon removal from syngas
A process for manufacturing ammonia from syngas with excess air for reforming and nitrogen removal with low pressure losses is disclosed. Auto-refrigeration for cooling the syngas for cryogenic...
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7089750 |
Expansion-nozzle cryogenic refrigeration system with reciprocating compressor
A cryogenic refrigeration system includes an expansion nozzle having a high-pressure nozzle inlet and a low-pressure nozzle outlet, and a compressor having a compression device, such as a pair of...
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7040119 |
Method and device for liquefying hydrogen
Described is a process and a device for liquefying hydrogen, whereby the hydrogen to be liquefied is liquefied against one or more refrigerant (mixture) circuits and/or by means of expansion and is...
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6609383 |
Cryogenic refrigeration system
The cryogenic refrigeration system of the present invention includes: a shield plate for preventing a radiant heat from entering a superconducting magnet; a helium refrigerator for generating a...
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6553772 |
Apparatus for controlling the operation of a cryogenic liquefier
A refrigeration system having a partially decentralized operating control system wherein five defined separate controllers control either one or more than one defined variables.
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6430941 |
Infrared detector
An infrared radiation (IR) detector device that comprises a casing, having an optical window for admitting radiation; a cold shield having a detector mounted therein and having a filter mounted...
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6374619 |
Adiabatic micro-cryostat system and method of making same
A cooling apparatus is described which includes a throttling valve and an adiabatic chamber having an input and an output, the output connected to an input of the cryostat. With such an...
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6327862 |
Stirling cycle cryocooler with optimized cold end design
A Stirling cycle cryocooler is disclosed that includes a displacer unit having a cold end and a hot end. The displacer unit includes a cold cylinder housing and a displacer liner disposed on the...
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6282920 |
Apparatus and method for producing polarized vapor-phase helium-3, particularly for NMR imaging
The present invention relates to an apparatus for producing polarized high-pressure vapor-phase helium-3, particularly for NMR imaging. The apparatus comprises a means for injecting helium-3 or a...
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6220052 |
Apparatus and method for liquefying natural gas for vehicular use
Apparatus for liquefying natural gas supplied from a source comprising a compressor for compressing the natural gas. A chiller reduces the temperature of the compressed gas, a heat exchanger for...
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6212904 |
Liquid oxygen production
An apparatus for liquefying and storing a gas is provided. The apparatus is adapted to liquify relatively small quantities of gas, and to do so in a residence or place of business. The apparatus...
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6202422 |
Joule-Thomson cooler
The Joule-Thomson cooler comprises a low-pressure circuit (2) in a spiral, flat, cylindrical or conical shape, formed in a block (1) of insulating material, and a high-pressure circuit comprising...
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6151901 |
Miniature mixed gas refrigeration system
A miniature mixed gas refrigeration system is disclosed, having a coaxial catheter with an inner high pressure supply lumen and an outer low pressure return lumen. The gas mixture is pressurized by...
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6141973 |
Apparatus and process for cooling gas flow in a pressurized pipeline
An apparatus and process for cooling gas flow in a pressurized pipeline, comprises the installation of one or more Joule-Thomson expansion valves along the length of the pipeline. The valve permit...
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6116049 |
Adiabatic expansion nozzle
A nozzle for producing a continuous gas/solid or gas/aerosol stream from a liquid having a high room temperature vapor pressure. The nozzle comprises a series of expansion stages, with the flow...
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6082119 |
Commandably actuated cryostat
The subject invention relates to a Joule-Thomson cryostat or refrigeration system in which an expansion valve can be commandably actuated to partially withdraw the core of the expansion valve in...
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6074572 |
Gas mixture for cryogenic applications
An optimum gas mixture formulated from a group of component fluids, for use in a miniature mixed gas refrigeration system. The gas mixture has appropriate components, in appropriate concentrations,...
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6041608 |
Low temperature refrigerating device having small refrigerating capacity change
There is provided a cryogenic refrigerating apparatus capable of reducing a fluctuation range of refrigerating capacity as far as possible with respect to a wide range of change in outdoor...
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6035657 |
Flexible catheter cryosurgical system
A microminiature laminated heat exchanger for use in a cryogenic probe, and a method of manufacture. The heat exchanger has high and low pressure flow patterns etched into oxygen free copper...
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6016659 |
Reactive thermo elastic cryostat
A cryostat (12) with an actuator (40) which reacts to sensed temperature changes via externally controlled thermal heating generated therein. The actuator (40) is constructed with material having a...
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5992158 |
Cryosurgical instrument
A cryosurgical instrument comprises a cooling tip operable to be cooled by a flow of a cryogenic fluid within the tip; and a fluid transfer chamber having a fluid inlet for receiving cryogenic...
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5974808 |
Cooling apparatus employing a pressure actuated Joule-Thomson cryostat flow controller
A pressure activated flow controller for use with a Joule-Thomson valve having a diaphragm actuator that is located outside a dewar, and which is not cooled. The diaphragm actuator limits flow...
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5956958 |
Gas mixture for cryogenic applications
A miniature mixed gas refrigeration system and method of operation are disclosed, having a coaxial catheter with an inner high pressure supply lumen and an outer low pressure return lumen. An...
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5946920 |
Method and apparatus for supplying liquid cryogen
A method and apparatus are described for controlling the rate of supply of a liquid cryogen, for example, for cryosurgical use. The flow rate of the liquid cryogen is controlled by controlling...
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5937657 |
Cooler
A controller is provided for controlling the operation of a Joule-Thomson cooler. When the cooler has cooled down to its operating temperature, the rate of gas flow to the cooler is controlled as a...
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5931021 |
Straightforward method and once-through apparatus for gas liquefaction
The invention relates to methods and systems for liquefaction of gases whose critical temperature is lower than the ambient temperature, such as, for instance, natural gas, air, nitrogen, oxygen,...
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5918471 |
Joule-Thomson cryostat in-line valve flow controller
An in-line valve flow controller for a Joule-Thomson cryostat. The controller has an in-line valve stem that is part of, and is collinear with, an actuation stem of the cryostat. Both the in-line...
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5913889 |
Fast response Joule-Thomson cryostat
A cryostat (10') with a heat exchanger (13'); a valve (25') for controlling the flow of fluid through said heat exchanger (13'); and a snap disk (30') for actuating the valve (25'). In a specific...
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5787715 |
Mixed gas refrigeration method
A miniature mixed gas refrigeration system and method of operation are disclosed, having a coaxial catheter with an inner high pressure supply lumen and an outer low pressure return lumen. An...
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5692379 |
Long term thermally stable cryostat
A long-term thermally stable cryostat (40). The cryostat (40) pre-cools an incoming high-pressure gas, converts it to a cold liquid, contains the liquid, and cools an item by allowing the liquid to...
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5657635 |
Method for obtaining very low temperatures
Temperatures of 0.2° K or lower are achieved by feeding 3He and 4He separately into a mixing chamber (5) in an enclosure (3) in which the temperature is held at around 2° K. The endothermal...
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5603221 |
Multiprobe surgical cryogenic apparatus
A cryogenic surgical apparatus comprises: a) a plurality of probes, each having a contact surface, each of which probes is suitable for creating fast temperature changes at the said contact...
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5598711 |
Fluid deflection method using a skirt
A method for deflecting a fluid supply using a skirt. The skirt comprising a remote and a close portion (with respect to distance from a fluid impinged surface). The skirt is located in close...
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5595065 |
Closed cycle cryogenic refrigeration system with automatic variable flow area throttling device
An integral combination of expansion valve and evaporator in a cryostat using a single support member. The valve includes two flow orifices, one orifice being used primarily for steady-state...
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5592822 |
Fluid deflection skirt apparatus
A skirt for deflecting a fluid supply comprises a remote and a close portion (with respect to distance from a fluid impinged surface). The skirt is located in close proximity to a surface to be...
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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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5577387 |
Controlled cryogenic contact system
An apparatus for creating controlled temperature changes on a contact surface, comprises: a) a probe having a contact surface, which probe is suitable for creating fast temperature changes at the...
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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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5551244 |
Hybrid thermoelectric/Joule-Thomson cryostat for cooling detectors
A hybrid thermoelectric/Joule-Thomson cryostat with a finite cryogenic gas supply is configured to greatly increase the cold operating time of a infrared detector array. A Joule-Thomson cryostat is...
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5548963 |
Joule-Thompson cryostat for use with multiple coolants
A demand-flow Joule-Thomson cryostat 10' adapted for use with multiple coolants uses a replaceable coolant supply reservoir 21' to fill a coolant flow control bellows 17' within the cryostat with...
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5452582 |
Cryo-probe
In the cryo-probe, refrigerant is furnished from a high pressure, room temperature supply. Insulation of the refrigerant lines is unnecessary. Refrigerant flows through a pre-cooling heat exchanger...
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5443548 |
Cryogenic refrigeration system and refrigeration method therefor
A plurality of cryopumps are installed in each of a plurality of neutral beam injection apparatuses disposed around a nuclear fusion apparatus. The cryopanels of each of the cryopumps are...
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5388415 |
System for a cooler and gas purity tester
A system for a cooler comprises: a heat exchange tube receiving a supply of pressurized gas, a gas escape aperture communicating with the interior of the heat exchange tube for permitting escape of...
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5379602 |
Method for providing cooling and a cooling apparatus suited for the same
The invention relates to a method and apparatus for providing cooling in a reloadable cooling apparatus, which can be used in actuators requiring low temperatures. According to the invention, the...
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5365750 |
Remote refrigerative probe
The refrigerative probe comprises in combination an insert member fit into, and cooperating with, a probe housing to provide an elongated flowpath in fluid communication with the inner surface of...
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5365746 |
Cryogenic cooling system for airborne use
An airborne cryogenic cooling system in which a first cryogenic material located within an on-board container is cooled to the solid state prior to launch a remotely located second cryogen...
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