Rock cavity
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United States of America Patent
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Nov 24, 1987
Grant Date -
N/A
app pub date -
May 16, 1986
filing date -
Sep 20, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A rock cavity for storing fluids, solid products for some other purpose, such as the protected manufacture or production of goods, comprising a substantially vertical, cylindrical rock cavity comprising a conical top section (14), and a conical or horizontal bottom section (15) and a vertical section (1) extending therebetween and presenting in cross-section a polygonal shape, wherewith vertical shafts (11) are located in at least half the corners of the polygon.
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