Patent Number: 041742540
Section: claims

1. A compression hub for bucking forces of magnets in a fusion reactor comprising: a plurality of polygonal metallic pancakes arranged in stacked relationship; said pancakes sealed to one another at the perimeter thereof, and spaced from one another within the seal welded area, thereby forming flow chambers between adjacent pancakes; at least one vertical opening through each of said pancakes in fluid communication with the flow chambers above and below the respective pancake; and the vertical openings through adjacent pancakes being remote from one another, whereby coolant flowing from one opening to another passes through the flow chamber intermediate the adjacent pancakes. 2. An apparatus as in claim 1 including also spacing means between adjacent pancakes located within the perimeter of said pancakes. 3. An apparatus as in claim 2 wherein said spacing means are located to baffle the flow passing through said flow chambers in a manner to avoid direct flow from one opening to another. 4. An apparatus as in claim 1 wherein at least one of said adjacent pancakes includes grooves connecting the openings in adjacent pancakes. 5. An apparatus as in claim 1 wherein the openings through said pancakes are located near a corner of the polygon. 6. An apparatus as in claim 1 wherein said pancakes have vertical central holes therethrough forming an inner perimeter, said pancakes being sealed to one another at both the inner and outer perimeters.