Sensor module for trawl

Communications – electrical: acoustic wave systems and devices – Echo systems – Distance or direction finding

Reexamination Certificate

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Details

C043S009700

Reexamination Certificate

active

07405999

ABSTRACT:
The invention relates to a module (100) which is attached to a trawl, and which at least comprises measuring sensors (330) and a power supply unit. (320) The sensors are basically inactive, but can be activated as the need arises to measure different parameters. In an embodiment the module also includes a power-generating movement device connected to a charging device that can supply energy to the power supply unit. The module may also include communication means. In an alternative embodiment the module ma include a trawl door that can drag the drawl in a desired direction. Several modules may be (combined to form a system that both measures different parameters and positions the trawl in order to achieve an optimal trawling process.

REFERENCES:
patent: 3444510 (1969-05-01), Tyndale et al.
patent: 3651595 (1972-03-01), Newman
patent: 4063213 (1977-12-01), Itria
patent: 4197591 (1980-04-01), Hagemann
patent: 4574723 (1986-03-01), Chiles
patent: 6138397 (2000-10-01), Hammersland
patent: 2003/0056424 (2003-03-01), Mueller
patent: 2007/0089349 (2007-04-01), Skjold-Larsen
patent: 0 263 615 (1988-04-01), None
patent: 1 342 969 (1974-01-01), None
patent: 2059172 (1981-04-01), None
patent: 2350541 (2000-06-01), None
patent: WO 81/03475 (1981-12-01), None

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