Prestressed concrete boiler closure

Details Prestressed concrete boiler closure Prestressed concrete boiler closure

1974-11-19

1976-06-29

Abbott, Frank L.

Static structures (e.g., buildings)

Tensioned or flexed sheet facing

52249, 220 3, 138 89, 52726, E04C 322, E04C 508

Patent

active

039656306

ABSTRACT:
A prestressed concrete container having a chamber therein and a removable concrete member closing the chamber and held in its chamber-closing position by primary and secondary hold-down means each comprising members held fast with the concrete of the container and with the secondary hold-down members passing through the concrete of the closure member.

REFERENCES:
patent: 3128001 (1964-04-01), Schmitz
patent: 3568385 (1971-03-01), Cruset et al.
patent: 3713459 (1973-01-01), McIver et al.
patent: 3733760 (1973-05-01), Koerner
patent: 3841035 (1974-10-01), Amtmann

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