SPLIT NON-WELDED CASING CAP FOR HIGH TEMPERATURE SERVICE
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United States of America Patent
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N/A
Issued Date -
Sep 10, 2009
app pub date -
Mar 6, 2009
filing date -
Mar 7, 2008
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A casing cap to seal the annulus formed between an upper end of an outer casing and an inner casing. An annular casing cap housing is formed in split portions which when joined at their splits form the casing cap housing to cover and seal the annulus. The joined casing cap split portions form a side wall which surrounds the outer casing. The upper end forms an annular top section adapted to rest on the upper end of the outer casing, cover the annulus and form an upper annular seal to the inner casing. The lower end is adapted to form a mechanical connection, preferably non-welded, to the outer casing and to form an annular seal to the outer casing. Connectors between the casing cap split portions clamp together the sealing surfaces of the casing cap split portions with the sealing element to form pressure-containing, non-welded seals.
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