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7685762 |
Device for reducing the catch of unwanted species in fishing trawls
A device for reducing the catch of unwanted species of organisms in fishing trawls which allows the retention of shrimp and the escape of fish from the trawl. The device features a longer, smaller...
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6357162 |
Whale release apparatus for use with fishing gear
A device (10) having a cylinder housing (12) with a bore (12a) receives a piston sleeve (14) in which a tapered bore is formed in radially movable sections extending from the piston head. A rope...
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6343433 |
Method and apparatus for separating target and non-target species harvested from waterbodies
The apparatus for separating target and non-target species harvested from a waterbody includes a catch boat towable behind a trawler for towing concomitantly with a trawl net towed behind the...
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6223462 |
Device for sorting out marine species in fishing trawl
The invention concern device placed in a fishing trawl for sorting out marine species not to be caught. The device is inserted in the after part of the trawl, near the trawl bag. The device is a...
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6170436 |
By-catch reduction acoustic device
Acoustic devices, attached to fishing nets, reduce or avoid by-catch of marine animals during fishing operations. The acoustic devices emit a deterrent signal to a particular marine animal on...
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5778591 |
Method and apparatus for temporarily debilitating tuna and other fish to facilitate capture
Tuna are separated from dolphins who often travel together by temporarily stunning the tuna and allowing the dolphins to continue on course. The tuna stunning is accomplished by creating underwater...
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5684755 |
Underwater pinger automatic deployment switch
A position-dependent switch to sense deployment of an underwater pinger to enable operation upon deployment. During underwater deployment the pinger orients itself differently from an orientation...
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5575102 |
Apparatus for exclusion of debris and by-catch from bottom trawls
A shrimp trawl net excluder device which excludes debris and turtle size sea creatures, fin-fish and other such marine life while allowing the desired shrimp catch to be retained. A hoop is...
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5517785 |
Sweepline construction for a bottom trawl
In one aspect, the sweepline system of the invention include a sweepline chain divided into a series of uniform subunits of common length attached along its U-shaped length to the hanging chains of...
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5349774 |
Method and apparatus for separating dolphin from tuna
A method and apparatus for using the primordial fear of dolphin of killer whales to separate dolphin from tuna. The sound of killer whale is recorded, digitized, edited and enhanced to produce...
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5325619 |
Selective excluding fishing trawl device
Fishing trawl device comprised of an outer net and inner net of differing mesh sizes that excludes undesirable objects and organisms incidental to trawling. The device consists of an outer net of...
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5301450 |
Fish net with escape panel
A fish net constructed of conventional open mesh flexible net material is provided with an aperture having an escape panel secured therein. The escape panel is comprised of extruded plastic net...
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5291682 |
Species selective fishing net system
The invention is a fishing net system which is selective for catching one or more species and for excluding one or more species. It includes a fishing net having webbing of adequate size to catch...
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5222318 |
Turtle exclusion device
A turtle exclusion apparatus for inclusion in shrimp trawling nets which features a turtle exclusion grate having bowed vertical bars and an "overhang" at its base and may also feature, when in...
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5123195 |
Method and apparatus for separating targeted species of aquatic life
A shrimp trawl or net having a second piggyback net attached to an opening in the top side of the body of the trawl and a pulser to stimulate mature shrimp to enter the opening in the second net....
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5076000 |
Weedless, turtle exclusion device
A weedless turtle exclusion device which excludes turtles and like sized things from trawl nets and the like, while allowing the desired catch therethrough. A deflector, through which the catch...
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4869010 |
Apparatus for exclusion of debris from bottom trawls
A inverted debris exclusion device, inserted in a trawl body of a shrimp trawl net immediately before the cod end, permits the ready release of trapped bottom debris and excludes fish from the cod...
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4805335 |
Sorting device for trawl nets
A sorting device (42) for a bottom trawl (10) to enable capturing preselected marine life and harmlessly separating nonselected marine life. The sorting device (42) comprises a top wall (44) and a...
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4739574 |
Turtle excluder device
A turtle exclusion device is inserted in a trawl body of a shrimp trawl net immediately before the cod end, and permits the ready escape of entrapped marine turtles. The device is a array of...
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4402154 |
Methods and apparatus for classifying marine items
Methods and apparatus for classifying marine items wherein relatively larger and relatively smaller items are separated from a flow of water and marine items before this flow is contained and...
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3440752 |
TRAWL NET SYSTEM
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3015903 |
Shrimping gear
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