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4576010 |
Cryogenic refrigeration control system
Three tanks containing cryogenic fluid coolant are mounted inside the insulated compartment of a refrigeration container. A control system releases coolant into the compartment responsive to...
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4575386 |
Method of liquefying a gas and liquefier for carrying out the method
A method of liquefying a gas comprises precooling such gas at a first, superatmospheric pressure in a first heat exchanger; and introducing the precooled gas into a cryogenerator to effect...
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4575629 |
Detector for raman spectra and other weak light
Apparatus for converting weak light, or light of low intensity, to electrical signals descriptive of such light. The apparatus is capable of sensing differences in photon flux over an area of...
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4571954 |
Waveguide phase conjugate mirror
A waveguide phase conjugate mirror for high power radiation at 10.6 μm. The phase conjugate mirror comprises an optical waveguide of liquid nitrogen clad by gaseous nitrogen. The waveguide is...
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4566283 |
Low temperature device for cooling small samples
Protected shall be an arrangement in which a liquid gas is evaporated within an insulated vessel below a hood, and in which the gas flows through a tube, which is within the hood, and penetrates...
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4566293 |
Method of sample preparation and apparatus therefor
A process and apparatus are provided that permits a sample to be cooled below the glass transition temperatures of the components of the sample without forming objectionable frost on the surface of...
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4565925 |
Infrared detector dewar with all-Kovar leads, and method of making the same
A vacuum dewar for infrared detectors is disclosed, in which unitary Kovar leads are used to reduce heat load and improve reliability and ruggedness. The Kovar leads are encapsulated in the glass...
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4563883 |
Specimen immersing device
A device for immersing a specimen into a cryogenic cooling liquid comprising an injector for carrying a specimen, means for accelerating the injector to a predetermined velocity vertically into the...
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4562703 |
Plug tube for NMR magnet cryostat
A vent tube which is particularly useful for horizontal cryostat penetration comprises a plurality of conduit sections joined by mating rings which facilitate the incorporation of relatively deep...
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4551992 |
Apparatus for cooling a biological or medical specimen
Apparatus for cooling a biological or medical specimen comprises a cooling bath, an injection device for injecting a specimen into cooling liquid in the bath at a velocity of between 5 and 15...
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4548053 |
Combined cold compressor/ejector helium refrigerator
A refrigeration apparatus having an ejector operatively connected with a cold compressor to form a two-stage pumping system. This pumping system is used to lower the pressure, and thereby the...
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4546614 |
Precooled detector leads
The leads for an infrared detector unit are arranged to pass through bores in a cooled detector housing with intimate contact with the cooled detector housing for precooling the leads extending...
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4546621 |
Cryogenic detector post
A cooled infrared detector post includes a detector post formed of a stack of wafer disks with a detector substrate wafer forming one end of the post and a cooling chamber adjacent to the detector...
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4545218 |
Cryogenic fixation apparatus
Cryogenic-fixation apparatus comprises a light source, a beam from which enter cooling liquid in a bath, through a window in the underside of the bath. The beam can be directed upwardly by means of...
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4543794 |
Superconducting magnet device
A cold insulation vessel comprises an inner chamber in which cryogen is enclosed, an outer chamber to enclose this inner chamber and a shield member against heat radiation which is provided between...
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4541249 |
Cryogenic trap and pump system
A cryogenic system adapted to trap or pump waste industrial gasses and characterized by a cryogenic assembly having a cryogenically cooled member sealed within an inner enclosure, a thermal switch...
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4538423 |
Cooling apparatus and cooling trap including such an apparatus
The region 1 to be cooled contains the evaporator of a heat pipe 2 which contains a diphase fluid adapted to the desired temperature between about 0° and -100° C. The condenser 7 of the heat pipe...
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4537043 |
Procedure for creating an inert gas atmosphere with constant composition of nitrogen and carbon dioxide in a refrigerated container
An inert gas atmosphere of nitrogen and carbon dioxide is created in a refrigerated container having a diesel engine. A lower oxygen content is maintained by an oxygen limit control while the...
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4535596 |
Plug for horizontal cryostat penetration
A plug for a horizontal cryostat penetration comprises a plurality of nested housings with thermal insulation disposed between the housings. Each housing has a tubular extension which is heat...
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4532779 |
Device for generating a dry, cold air flow for treatment of rheumatic diseases
A device for generating a dry, cold air flow in the treatment of rheumatic diseases includes a cyclone separator as its heat exchange device. The intake line of the cyclone separator is connected...
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4526015 |
Support for cryostat penetration tube
Penetration tubes extending between inner and outer walls of a cryostat necessarily comprise thin walled structures to minimize thermal conduction. However, in cryostat structures in which the...
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4522034 |
Horizontal cryostat penetration insert and assembly
An insert for a horizontal cryostat penetration comprises a plurality of foam plugs between which are disposed patches of copper or aluminum foil. The plugs and foil are disposed in a tubular...
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4516404 |
Foam filled insert for horizontal cryostat penetrations
An insert for a horizontal cryostat penetration includes a plurality of foam particles or spheres between which are disposed disks of high thermal conductivity. The spheres or particles are...
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4510771 |
Cryostat with refrigerating machine
In a cryostat composed of a first liquefied gas reservoir containing therein a first liquefied gas, a second liquefied gas reservoir containing therein a second liquefied gas, which has a boiling...
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4509342 |
Infrared receiver having a cooled radiation detector
An infrared receiver having an infrared radiation detector cooled by means of a cold-gas engine, the thermal contact between a cooling surface of the cold-gas engine and the radiation detector...
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4509343 |
Apparatus for inserting a flexible bag into a fluid transmission line
Apparatus for inserting a flexible bag into the interior of a fluid transmission line to form a plug by filling the bag with a freezable liquid. The apparatus comprises a cylindrical frame member...
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4502296 |
Cryostat
A cryostat including a horizontal hollow space section of room temperature in which a liquid helium vessel is supported by a plurality of support structures each having a multiple cylinder of small...
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4501131 |
Cryogenic cooler for photoconductive cells
Resolution and sensitivity of photoconducting light sensitive devices vary nversely with temperature. Hence it is desirable to provide cooling means for photoconductive radiation detectors. One...
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4498046 |
Room temperature cryogenic test interface
This interface permits the testing of high speed semiconductor devices (room-temperature chips) by a Josephson junction sampling device (cryogenic chip) without intolerable loss of resolution. The...
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4496073 |
Cryogenic tank support system
A single-stage cryogenic tank support system is disclosed having a large-radius support tube surrounding an internal storage tank, both of which are enclosed by an external shell. The attachment...
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4495782 |
Transmissive Dewar cooling chamber for optically pumped semiconductor ring lasers
A transmission Dewar cooling chamber having a housing for supporting a semiconductor crystal therein within a temperature controlled environment. The housing has walls made partially of material...
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4495988 |
Controlled heat exchanger system
A system for transferring heat from a first (inner) surface through a second (outer) surface. The system includes at least two adjacent porous and thermally conductive layers between the first...
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4494385 |
Method of preserving organ and apparatus for preserving the same
A method of preserving an organ which comprises a first perfusing step of injecting blood uniform i.e., perfusing choline from an artery or portal vein of the excised organ while gradually lowering...
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4492095 |
Apparatus and method for forming a temporary plug in a fluid conduit
A flow stopping plug is formed in a conduit such as a fluid transmission pipeline by tapping a relatively small hole in the side of the pipe directly adjacent the desired location of the plug and...
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4489570 |
Fast cooldown miniature refrigerators
A multilayer miniature low temperature rapid cooldown refrigerator in which a central cooling chamber for a device to be continuously cooled is connected to input and output refrigerant lines by...
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4489569 |
Cooling apparatus for the rapid cooling of specimens
A cooling apparatus utilizing liquid nitrogen for cooling specimens to temperatures in the range from -100° C. to -195° C. in propane, halogenated hydrocarbons, isopentane, or other cooling...
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4488414 |
Disc detector assembly
A miniature, nonevacuated, detector refrigerator assembly for use in infrared imaging systems is described. The assembly incorporates a miniature Joule-Thomson laminar refrigerator which serves as...
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4487033 |
Method of freezing fertilized ova, spermatozoa or the like and apparatus therefor
A method of freezing fertilized ova, spermatozoa or the like which has the steps of containing fertilized ova, spermatozoa or the like in a buffer solution at an irregular position in a tube, and...
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4487253 |
Heat exchanger for cryosurgical instruments
A heat exchanger for cryosurgical instruments comprises a mantle containing individual layers of a heat exchange substance, such as a heat exchange material or a heat exchange filler, an outer...
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4487037 |
Small-sized cryostatic device for photodetectors
A small size e.g. 12 mm diameter by 40 mm long cryostatic device with photodetectors. A hollow finger having the photodetectors at one end is adapted to be brought to a very low temperature by a...
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4485641 |
Device for freezing biological products
A freezing device for biological products comprises an impeller arranged at the top of a sleeve located above a basin of liquid nitrogen. The impeller causes a rising flow of nitrogen vapors within...
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4480682 |
Apparatus for freezing fertilized ova, spermatozoa or the like
An apparatus for freezing fertilized ova, spermatozoa or the like has a heat transfer bottom board block formed at the lower end of a heat insulating peripheral wall with a lower refrigerant...
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4479362 |
Cryogenic cooling of pneumatically transported solids
The present invention is an improved process for cooling cement which comprises injecting liquid nitrogen into a pneumatic transport line used to convey the cement.
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4474036 |
Infra-red radiation detectors
An infra-red radiation detector comprises an envelope in the form of a dewar (1,2) in which a vacuum space (12) is present between an outer wall (2) and inner wall (1) cooled by a cooling element...
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4462214 |
Cryostat
A cryostat comprises an inner tank to be contacted with a cryogenic fluid and an outer tank surrounding the inner tank. The inner tank is formed of fiber-glass reinforced vinyl polyester resin.
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4462223 |
Method and means for preventing coupling freezing
Freezing of ice on quick connect couplings during transfer of a cryogenic liquid, such as liquid oxygen, from one container to another is prevented by providing a cup-like shield means encircling...
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4459823 |
Rotating liquid nitrogen cooled substrate holder
An apparatus comprising a rotating substrate holder is provided. The rotating substrate holder is hollow and adapted to receive liquid gas such as nitrogen to cool the substrate to cryogenic...
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4456826 |
Rotating detector system with coolant supply
In an arrangement for preparing a sectional image of the body, the picture elements of which are derived from the absorption of ionizing rays, the detector system contains detectors associated with...
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4444249 |
Three-way heat pipe
A three-way heat pipe configured in a generally Y-shape having a condenser-evaporator or heat-sink end, an evaporator arm and a condenser arm. In addition to conventional internal pumping the heat...
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4432216 |
Cryogenic cooling apparatus
A split type cryogenic cooling apparatus comprising a refrigerator which permits a working gas of a high pressure and an operating temperature to generate cold heat, a cryostat accommodating a...
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