Pressure actuated buoy flattener

Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,... – Submerging – raising – or manipulating line of pipe or cable...

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F16L 104

Patent

active

049749951

ABSTRACT:
Pressure-triggering buoys are constructed of prebuckled pipe segments and attached to an offshore structure or pipeline under construction. The attached buoys move with the structure or newly added pipe segment toward the sea bottom, easing the descent. As the structure or segment of pipeline reaches a predetermined depth, the buoy attached thereto collapses, causing the structure or segment of pipeline to be heavier. In the instance of a pipeline, this collapse, in turn, causes the adjacent upper segment of pipeline to move lower, causing the next buoy to collapse, and so on.

REFERENCES:
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patent: 3192621 (1965-07-01), Bauer et al.
patent: 3425115 (1969-02-01), Handwerk et al.
patent: 3620028 (1971-11-01), Wilde
patent: 3727417 (1973-04-01), Shaw
patent: 3768269 (1973-10-01), Broussard et al.
patent: 4037425 (1977-07-01), Berg
patent: 4067199 (1978-01-01), Jegousse
patent: 4121529 (1978-10-01), Smith
patent: 4159189 (1979-06-01), Todd et al.

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