Abstract: A cryogenic liquid storage system is disclosed having an outer tank; an inner tank inside the outer tank and configured to store a cryogenic liquid; an isolation valve; a collection chamber outside the outer tank and fluidically connected to the inner tank to enable fluid to flow from the inner tank to the collection chamber via the isolation valve, and the isolation valve can be actuated to isolate the collection chamber from the inner tank; and a measurement probe movable between the inner tank and the collection chamber.

Abstract: A storage tank arrangement, optionally suitable for a vehicle, includes a storage tank for storage of volatile liquids including a tank inner wall and a tank outer wall separated by an insulating inter-wall region, inner and outer feedthrough arrangements, each configured to form a seal with a respective surface of the storage tank arrangement and to permit passage therethrough, and/or permit connection of, of one or more sensors, and a container external of the storage tank outer wall, configured to inhibit egress of the contents of the storage tank in the event of a failure of at least one of the inner and outer feedthrough arrangements. A vehicle including such a storage tank arrangement is also disclosed.

Abstract: An animal cage rack incorporating a shelf leveling device includes a support frame in which a plurality of shelves are adjustably mounted. The corners of the shelves rest on height adjustment devices which may be rotated to adjust the height of each of corners, after which the shelves may be locked to the support frame. In one embodiment of the invention, the adjustment device is an adjusting screw. Additional embodiments of the invention include cam-operated height adjustment devices which either adjust the height of individual corners of shelves or alternatively adjust the heights of corresponding corners of several shelves.