Abstract: An improved heat-insulating support device is disclosed which is capable of supporting a coolant tank to a vacuum vessel in a manner such that when the vacuum tank is subjected to a great external force after the coolant tank has been cooled down to a cryogenic temperature, the coolant tank and hence cryogenic equipment mounted thereon are held in place and prevented from being displaced beyond a prescribed allowable range, without impairing the intended heat-insulating capability thereof.

Abstract: A cryostat comprising a cryogenic vessel for storing a cryogen therein, a port pipe disposed at a portion of the vessel for holding one end of a supply pipe for supplying the cryogen to the vessel thereby allowing the cryogen to flow into the vessel while the very low temperature liquid cryogen is being supplied from the exterior to the vessel, and a cryogen supply pipe disposed in the vessel so as to be spaced apart from the port pipe, further the cryogen supply pipe having a receiving portion for receiving the cryogen from the supply pipe during the supply of the cryogen.

Abstract: A vertically compact cryostat includes a housing 2 having a cylindrical lower chamber 3a containing a superconducting coil 1 and a contiguous, larger diameter, overhanging upper chamber 3b serving as a liquid helium reservoir. An annular liquid nitrogen tank 15 surrounds the lower chamber and underlies the upper chamber overhang to thermally insulate the helium and minimize the evaporation thereof. The assembly is completed by a metallic thermal shield 17 attached to the tank and enclosing the housing, and a vacuum vessel surrounding the tank and shield.

Abstract: A very low temperature liquid transfer system of the present invention is constructed with first and second containers, each storing therein very low temperature liquid; a connecting tube for communicatively connecting the first and second containers; a pressure control system for increasing and decreasing a pressure in the first container for pressurized transfer of the very low temperature liquid from the first container into the second container through the connecting tube; a pressure gauge for measuring a pressure in the first container; a liquid level sensor for measuring a quantity of the very low temperature liquid in the second container; and a control which functions to logically determine input signals from the pressure gauge and the liquid level sensor, and to produce an output operating signal to the pressure control system based on the logical determination.

Abstract: A cryogenic vessel comprises a liquid helium tank including a substantially flat top wall and which contains therein a cryogen-cooled electrical apparatus. The helium tank is surrounded by a radiation shield provided with a cooling tube through which evaporated helium gas flows and the radiation shield is then surrounded by an outer housing. In order to evenly cool the top wall of the cryogen tank, it is provided with a heat conducting plate, a cooling coil or a plurality of evenly distributed inlets for substantially evenly cooling it.

Abstract: A cryogenic container having an inner tank for storing cryogen therein, an outer tank for housing the inner tank therein in a thermally insulating relationship, and a pipe connected between the outer and inner tanks for supporting the inner tank relative to the outer tank. The pipe has a heat conducting cross sectional area which is larger at the portion near the outer tank side than at the portion near the inner tank side, thereby reducing the heat conduction through the pipe.