Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,... – Submerging – raising – or manipulating line of pipe or cable...
Patent
1978-04-21
1980-03-04
Taylor, Dennis L.
Hydraulic and earth engineering
Subterranean or submarine pipe or cable laying, retrieving,...
Submerging, raising, or manipulating line of pipe or cable...
1371165, 405154, 405162, F16L 100, F16L 300
Patent
active
041914945
ABSTRACT:
An apparatus for imparting suitable buoyancy to submerged articles, such as pipelines, to reduce their weight in water and enable efficient movement thereof. The apparatus comprises at least one float comprising air tight material, pipe for supplying pressurized air thereinto, and a differential pressure regulating valve arranged close to the float and connectable to the pipe for regulating the amount of pressurized air supplied to the float dependent upon the difference in pressure between that in the float and a predetermined value. Advantageously, the apparatus is easily transportable, stored and attached to the items to which it imparts the desired amount of buoyancy; the apparatus also keeps constant the buoyancy regardless of the depth of water, thus, enabling easy and safe moving of submerged articles.
REFERENCES:
patent: 2602300 (1952-07-01), Collins
patent: 2720887 (1955-10-01), Safford
patent: 3420257 (1969-01-01), Lansky et al.
patent: 3538930 (1970-11-01), Kowalski
patent: 3545471 (1970-12-01), Taplin
patent: 3621872 (1971-11-01), Fisher
patent: 3727417 (1973-04-01), Shaw
Nakamura Koji
Nakatsuka Takuzo
Ogata Masaru
Kojima Moonray
Nippon Kokan Kabushiki Kaisha
Shibata Kogyo Co., Ltd
Taylor Dennis L.
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