Class 505/899 - Method of cooling

Subclass of Class 505 - Superconductor technology: apparatus, material, process
Definition: Subject matter including processes specially adapted for
No. of patents: 19
Last issue date: 07/11/1995

Number	Title	Issue Date
5432297	Power lead for penetrating a cryostat A multiple circuit hybrid cryostat power lead has a plurality of laterally spaced, electrically isolated lead elements inside a tubular enclosure. Each lead element has an inner section with a high temperature superconducting (HTS) conductor inward of a d...	07/11/1995
5319154	Method of cooling a current feed for very low temperature electrical equipment and device for implementing it A current feed extends between a terminal at ambient temperature and an electrical equipment immersed in a cryogenic fluid and adapted to operate at variable current. The current feed is cooled by circulating an auxiliary cooling fluid at ambient temperat...	06/07/1994
5193348	Device for cooling a SQUID measuring instrument A device for cooling a SQUID measuring instrument for measuring biomagnetic or other weak magnetic fields includes a cryostat containing a vacuum in an interior space. At least one superconducting gradiomeer and at least one associated SQUID are disposed ...	03/16/1993
5182914	Rotary dipole active magnetic regenerative refrigerator The rotary dipole active magnetic regenerative refrigerator (10) of the present invention comprises a stationary first regenerative magnetic bed (12) positioned within a stationary first inner dipole magnet (14), a stationary second regenerative magnetic ...	02/02/1993
4872314	Superconducting coil refrigerating method and superconducting apparatus In a superconducting coil refrigerating method and a superconducting apparatus, a flow of liquid helium is induced in a helium vessel only at a specified time upon change of a current of the superconducting coil, before the current change and/or after the...	10/10/1989
4444019	Method of cold generation and a plant for accomplishing same The herein disclosed method of cold generation provides for the compression of refrigerant and its subsequent cooling. Then, at least part of the refrigerant flow is expanded, accompanied by the generation of acoustic or another type of wave energy which ...	04/24/1984
4386950	Method and apparatus for producing solid hydrogen A diamond-anvil, high-pressure cell having an apertured steel gasket interposed between the opposed diamonds is lowered into a liquified hydrogen bath at cryogenic temperatures. After the liquid hydrogen permeates the cell through the viewing apertures an...	06/07/1983
4354355	Thallous halide materials for use in cryogenic applications Thallous halides, either alone or in combination with other ceramic materials, are used in cryogenic applications such as heat exchange material for the generator section of a closed-cycle cryogenic refrigeration section, as stabilizing coatings for super...	10/19/1982
4329849	Method and apparatus for replenishing the helium bath in the rotor of a superconducting generator In order to replenish a helium bath in the super-conducting rotor of an electrical machine, in which bath liquid helium boils at subatmospheric pressure, with liquid helium from a helium reservoir, the liquid helium in the reservoir being at ambient press...	05/18/1982
4279127	Removable refrigerator for maintaining liquefied gas inventory A cryostat for maintaining an inventory of a liquefied cryogen including a vacuum jacketed reservoir (Dewar) containing heat shields in the vacuum jacket, the heat shields cooled to different temperatures and a cryogen recondenser cooled by a cryogenic re...	07/21/1981
4211087	Device for maintaining a vacuum in a compartment of a rotating member A device for maintaining a vacuum in a compartment of a rotating member includes a collector which is mounted over an orifice of the rotating member. The collector has an end wall with an annular aperture extending axially of the rotating member. The aper...	07/08/1980
4189930	Method of obtaining refrigeration at cryogenic level A method of obtaining refrigeration at a cryogenic level comprising a gaseous fluid fed in the form of an incoming stream to sustain a refrigerative load. The incoming stream is stepwise cooled and expanded with liquefaction. The liquid fluid formed is us...	02/26/1980
4169361	Method of and apparatus for the generation of cold Cold is generated, according to the invention, by compressing a refrigerant and expanding the refrigerant isentropically in a nozzle. Advantageously at least a part of the expanded refrigerant is passed in indirect heat exchanging relationship with the po...	10/02/1979
4161107	Method of producing supercold temperature in cryogenic systems A method of producing supercold temperature in cryogenic systems by compressing a gaseous fluid constituting an incoming stream followed by its stepwise cooling by a return stream of the fluid. The incoming stream is split into a main stream and a subsidi...	07/17/1979
4116017	Method of and apparatus for the cooling of articles with a circulated cooling gas Articles such as vehicle tires, synthetic-resin scraps and other objects, which can be embrittled at low temperatures for subsequent cold-milling, are cooled with a circulated cooling gas which is itself cooled by the injection of an expandable coolant in...	09/26/1978
4069028	Magnetic heat pumping The method of the invention employs ferromagnetic or ferrimagnetic elements, preferably of rare-earth based material, for example, gadolinium, and preferably employs a regenerator. The steps of the method comprise controlling the temperature and applied m...	01/17/1978
4015437	Process for cooling cryocables using a hydrogen slush A process for cooling cryocables by low-boiling gases includes recooling gases at cooling stations distributed along the length of the cable. The pressure loss of the gases is equalized at pumping stations equally distributed along the length of the cable...	04/05/1977
3994141	Process for cooling by means of a cryogen slush A process for cooling by means of a low-boiling gas comprises the steps of continuously producing a gas slush and conveying it from the location of its production to the place of consumption. The gas slush releases its heat of fusion at the place of consu...	11/30/1976
3992893	Method for the production of superfluid helium under pressure at very low temperature and an apparatus for carrying out said method A bath of helium-4 is cooled to a temperature below the λ point so as to convert the lower portion of the bath to a superfluid-helium zone. A narrow stream between a top and a bottom portion of the zone is subjected to a critical heat flux corresponding ...	11/23/1976

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Class 505/899 - Method of cooling