Abstract: A cryogenic apparatus comprising a first enclosure, a thermo-mechanical cooler thermally coupled to said first enclosure, a second enclosure spatially distanced from the first enclosure. An elongate tubular link member configured to thermally couple the first and second enclosures across the space between them. A liquid helium containing vessel located in or proximal to said second enclosure for holding liquid helium, in use, a liquid helium delivery assembly for delivering helium from said thermo-mechanical cooler to said liquid helium containing vessel. A helium gas extraction duct for carrying helium gas returned from said from said second enclosure, via said link member, to said thermo-mechanical cooler. A connecting device located in said first enclosure and comprising a plurality of fluidly coupled ports, wherein a first port of said connecting device is coupled, via first vibration-suppressing means, to an end of said tubular link member.

Abstract: A cryogenic apparatus (10) includes an enclosure (12), a first thermo-mechanical cooler (20) and a second thermo-mechanical cooler (22) which project into the enclosure (12), at least the second thermo-mechanical cooler (22) being a two-stage cooler, and each cooler (20, 22) having a fluid inlet and a fluid outlet for each stage, and a helium gas extraction flow duct (40) which extends into the enclosure (12) and which communicates with a vessel (42) to contain liquid helium within the enclosure (12). There is a first heat exchanger (62) within the gas flow duct (40). A first duct (74) carries cold helium gas from a fluid outlet (73) of the first thermo-mechanical cooler (20) and through the first heat exchanger (62) to the fluid inlet (75) of the second stage of the second thermo-mechanical cooler (22).

Abstract: A clamping device suitable for securing a pair of flanges together is a unitary strip of a polymeric material that defines a multiplicity of clamping segments linked by flexible strip portions. The ends of the unitary strip define latching elements shaped to interconnect when the ends are brought together. Along one face of the unitary strip the clamping segments define teeth that project at opposite sides of the unitary strip, and these teeth define faces that are adapted in use to contact outer faces of the pair of flanges. Each clamping segments may define two opposing teeth. The clamping device can be operated with a single hand, being bent around the outside of the pair of flanges so that the clamping segments engage opposite faces of the pair of flanges and hold them together, and the latching elements are interconnected.

Abstract: A cryogenic apparatus (10) includes an enclosure (12), a first thermo-mechanical cooler (20) and a second thermo-mechanical cooler (22) which project into the enclosure (12), at least the second thermo-mechanical cooler (22) being a two-stage cooler, and each cooler (20, 22) having a fluid inlet and a fluid outlet for each stage, and a helium gas extraction flow duct (40) which extends into the enclosure (12) and which communicates with a vessel (42) to contain liquid helium within the enclosure (12). There is a first heat exchanger (62) within the gas flow duct (40). A first duct (74) carries cold helium gas from a fluid outlet (73) of the first thermo-mechanical cooler (20) and through the first heat exchanger (62) to the fluid inlet (75) of the second stage of the second thermo-mechanical cooler (22).

Abstract: A clamping device (10) suitable for securing a pair of flanges (12) together, consists of a unitary strip of a polymeric material that defines a multiplicity of clamping segments (14, 15) linked by flexible strip portions (16). The ends of the unitary strip define latching elements (22, 24) shaped to interconnect when the ends are brought together. Along one face of the unitary strip the clamping segments (14, 15) define teeth (18, 20) that project at opposite sides of the unitary strip, and these teeth define faces that are adapted in use to contact outer faces of the pair of flanges. Each clamping segment (14, 15) may define two opposing teeth (18, 20). The clamping device can be operated with a single hand, being bent around the outside of the pair of flanges so that the clamping segments (14, 15) engage opposite faces of the pair of flanges (12) and hold them together, and the latching elements (22, 24) are interconnected.