Receptacles – Receptacle having flexible – removable inner liner – Means for venting air trapped between the liner and its...
Patent
1982-02-10
1984-08-07
Shoap, Allan N.
Receptacles
Receptacle having flexible, removable inner liner
Means for venting air trapped between the liner and its...
52223R, 52224, 52227, 52245, 52246, 52249, 52503, 52505, 52606, 220 1B, 220 3, 220 5A, 220 71, 220426, 376294, B65D 9008, E04C 108, E04C 116, G21C 1302
Patent
active
044638728
ABSTRACT:
To enable the benefits to be obtained simultaneously of using cast iron as a major constituent and of using helical prestressing, the cylindrical wall structure of a pressure vessel (which may be for a nuclear reactor) is made of truncated wedge shaped cast-iron slabs (the wedge faces of the slabs lying in radial planes of the wall structure and mutually adjacent slabs abutting one another in those planes, with a plurality of such slabs forming an annular assembly and a plurality of such assemblies stacked coaxially to form the cylindrical wall structure), the slabs having cast-in through passages, disposed obiquely, both right and left-handed in alternate layers at progressively increasing radial distance with respect to the cylindrical wall structrue, and the passages of one slab in alignment with the ends of passages of adjacent slabs in the same annular assembly and in the annular assemblies stacked adjacent thereto to provide in the assembled cylindrical wall structure a system of right- and left-handed generally helical tendon ducts therefor.
REFERENCES:
patent: 2414011 (1947-01-01), Billner
patent: 3209510 (1965-10-01), Nakanishi
patent: 3433382 (1969-03-01), Boggio
patent: 3568385 (1971-03-01), Cruset et al.
patent: 3712012 (1973-01-01), Meyer et al.
patent: 3893508 (1975-07-01), Nemet
patent: 4111327 (1978-09-01), Janakiev
patent: 4192718 (1980-03-01), Janakiev
Paper H1/11, the 4th International Conference on Structural Mechanics in Reactor Technology, (Aug., 1977).
National Nuclear Corporation Limited
Shoap Allan N.
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