Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,... – Submerging – raising – or manipulating line of pipe or cable...
Patent
1988-04-19
1989-02-07
Taylor, Dennis L.
Hydraulic and earth engineering
Subterranean or submarine pipe or cable laying, retrieving,...
Submerging, raising, or manipulating line of pipe or cable...
405159, 405164, F16L 104, E02F 502
Patent
active
048027936
ABSTRACT:
The plough consists of two portions separable by rams (72). Each portion comprises a beam (14, 16) joined to a plough body part (18, 20). The portions include two pairs of longitudinally-spaced arms (69) interconnected by pivots (70). At each end of the plough a support including bearers (61) is closed by a ram (59) to entrap the pipeline (26). Another ram lifts the support to raise the pipeline between the plough body parts (18, 20). The support ram is connected to a pressurized accumulator so that the support rollers (62) are kept against the pipeline (26) as the plough rises and falls and pitches. The elevated positions of the arms (69) and the relatively short separation between the two pairs of arms (69) allows the plough to descend and pitch relatively to the pipeline. In a modification the two beams are joined by rigid bridging structure and the plough body parts are pivotally connected to their respective beams. In other modifications the supports are dispensed with; or only one is used.
REFERENCES:
patent: 2795111 (1957-06-01), Richardson
patent: 2875585 (1959-03-01), Little
patent: 2992537 (1961-07-01), Callahan
patent: 3004392 (1961-10-01), Symmank
patent: 3429132 (1969-02-01), Martin
patent: 3583170 (1971-06-01), DeVries
patent: 3732701 (1973-05-01), Lynch
patent: 3803856 (1974-04-01), Faldi
patent: 4022028 (1977-05-01), Martin
patent: 4106335 (1978-08-01), Shatto
patent: 4245927 (1981-01-01), Wharton
"Land and Marine Seabed Trenching" publication, Land and Marine Engineering.
Pamphlet: STP 3000 ETPM New Plough, ETPM, France.
Two Photographs of Plow PBP1, as Illustrated in Land and Marine Seabed Trenching Publication.
Grinsted Timothy W.
Reece Alan R.
Soil Machine Dynamics Limited
Taylor Dennis L.
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