Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,... – Submerging – raising – or manipulating line of pipe or cable...
Patent
1989-12-26
1991-03-19
Taylor, Dennis L.
Hydraulic and earth engineering
Subterranean or submarine pipe or cable laying, retrieving,...
Submerging, raising, or manipulating line of pipe or cable...
405166, 405158, F16L 112
Patent
active
050006193
ABSTRACT:
A cable ship is outfitted with an improved dynamometer including a multi-roller sheave which is positioned between an optical fiber cable, supply and the cable destination so that the cable rolls over the multi-roller sheave. The center axis of the cable changes direction from one side of the multi-roller sheave to the other side. When the ship is propelled and pulls the cable, tension in the cable causes the multi-roller sheave to move and consequently stress a strain gauge. A signal produced by the strain gauge accurately indicates the tension in the cable. Friction and wear between the cable and the dynamometer are eliminated for all practical purposes. Very accurate readings of tension are obtained.
REFERENCES:
patent: 4538937 (1985-09-01), Lynch
patent: 4721410 (1988-01-01), Recalde
patent: 4723874 (1988-02-01), Recalde
patent: 4789108 (1988-12-01), Recalde
AT&T Bell Laboratories
McBee J. Russell
Ranieri Gregory C.
Taylor Dennis L.
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