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7165502 |
Trawling vessel with a lock chamber
A trawling vessel is provided with a trawl net ( 5 ) for catching marine bio-resources, with a trawl sack ( 3 ) attached aft on a trawl net ( 5 ) for keeping the catch. The vessel comprises lines (...
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6883265 |
Equipment for storage and transport of living fish
A fish bag ( 1, 1 ′) comprising a netting with bag rings ( 3 ) and at the end a second at the end a second netting ( 4 ) with purse lines ( 5, 6 ) and a towing line ( 9 ). One or more braces ( 9...
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6732468 |
Cell design for a trawl system and methods
Mesh bars ( 35, 283 ) of a trawl ( 13, 263 ) include at least a portion having a corkscrew-shaped pitch which exhibits a hydrofoil-like effect. Such mesh bars ( 35, 283 ) are preferably formed from...
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6453597 |
Rigging assembly methods and apparatus for trawling nets
A rigging system or apparatus for connecting together bridal and bridal lines of a trawling system. The rigging apparatus comprises a main member and two or perhaps three link members. The link...
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6374531 |
Trawl system cell design and methods
A mesh cell construction which is systemized wherein opposite mesh bars of the rectangularly shaped mesh cell have a common lay direction when viewed in an axially receding direction (either...
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6138397 |
Method and device for operation of a trawl
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6112699 |
Euphausiid harvesting and processing method and apparatus
Method and apparatus for harvesting and processing zooplankton and, in particular, for harvesting and processing euphausiids for subsequent use as a feed product for early stage juvenile or larvae...
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5722196 |
Aquatic seine device
An aquatic sampling device is provided, said aquatic sampling device comprising generally a plurality of two parallel vertical members, a plurality of two parallel horizontal members, a plurality...
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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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5361528 |
Trawling system and trawl device for shrimp
A trawling system for catching shrimp which includes a trawler, an outrigger carried by the trawler, an onboard suction pump, a trawl device that is adapted to be dragged along the bottom of a body...
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5351430 |
Device and a method for autotrawl operation
A compensating device equipped with a hydraulic cylinder/piston arrangement as a damping member, and a sheave operatively connected with the cylinder and piston arrangement, and a hydraulic...
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5347860 |
Benthic sampling effectiveness measurer
This invention provides a device and method for measurement of the actual on-bottom time of a sampling otter trawl used for benthic sampling. The device uses passive measurement of the actual...
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5319873 |
System for positioning a fishing net
A fishing net is suspended from a corkline. A monofilament line is formed into three loops which are clamped together. The first of these three loops forms a knot around the corkline and the other...
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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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5231788 |
Buoyancy body, primarily for use on large sea depths, and a method of manufacturing such a body
A buoyancy body including an assembly of smaller parts formed in such a manner that the smaller parts have no large thickness. The parts are individually produced as foam plastic parts in order to...
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5121566 |
Fishnet hanging system
Separate anchor members (1, 1', 1", 1'", 40, 60, 70, 80, 80', 80") are secured at regularly spaced locations to a rope or line (L) to which a net (N) is to be coupled. The anchor members carry...
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5058307 |
Bean trawl pickup device
A beam trawl pickup device comprising a pickup block with three cable guides and a pickup block pulley. Cables are connected from a beam trawl through the guides in the pickup block. The central...
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5048222 |
Crab catcher
A crab catcher for use with baited crab line includes a mesh box cage or basket with an opened end facing in the direction of motion of the boat. It is mounted in a frame alongside a moving boat,...
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5043060 |
Swimming pool skimmer
A portable swimming pool skimmer that may be dragged around the perimeter of a swimming pool by a person gripping its tether line. The swimming pool skimmer has a pair of laterally spaced end walls...
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4914848 |
Trawl net
A trawl net with buoyant-force generating member whose angle of elevation in the vertical direction can be adjusted while the trawl net is being dragged or towed and by varying the angle of...
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4882870 |
Trawler door
A trawler door with relative dimensions such that the height of the door is at most seventy five percent of its length. Two longitudinally arcuate platelike body parts are joined along a...
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4783927 |
Doorless, positive-spreading trawling apparatus
The doorless trawling apparatus provides for positive spreading of the opening of a trawling net by means of a plurality of toggle spreading bars which spread the net by a combination of towing...
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4759146 |
Method for undermining an immersed ground and for generating an ascending water current, and device for implementing such a method
The invention concerns a procedure for undermining underwater terrain (S) thus creating an upward rising current (Tj) able to lift items lying on the terrain (S) or half-buried in it, in order to...
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4597214 |
Trawling apparatus
Trawling apparatus, including otterboards, sleds and mid-water boards (47) have transverse slats (50,54) fixed to a frame, has uprights (48) and a shoe. The apparatus is towed via a towing yoke...
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4514924 |
Opening device for a trawl net
An apparatus and method for fishing by trawling operation with a substantial reduction in the amount of energy needed to be used by the fishing vessel for the operation, including providing a...
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4509286 |
Trawl shrimp cage
A vessel supported shrimp trawl cage system provides a pair of spaced apart nets which are supported at the water surface by the vessel so that a forward end of the net defines a net opening and...
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4509285 |
Aquaculture harvester
To harvest aquaculture from a pond, a net called a floor is placed at the bottom of one end of the pond. A second net, called a wing, is pulled with tractors from the opposite end of the pond to...
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4356654 |
Tandem dragnets
A tandem dragnet comprises a main dragnet having an open rear end and a rear dragnet enveloping a rear portion of the main dragnet including the open rear end. Support lines for the rear dragnet...
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4323222 |
Control systems for hydraulically operated elements circuits or systems
Method of controlling two separately operable hydraulic circuits involving monitoring the pressure conditions in one of the circuits, comparing this pressure with a reference pressure which is...
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4224755 |
Trawl-net apparatus having controlled net opening and closing
The trawl-net apparatus includes, between the net and the bottom, a closing-opening mechanism provided with a first control device. The mechanism holds the entrance of the bottom closed while...
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4082055 |
Neuston net apparatus
A neuston net apparatus for guiding a net to be towed at the surface of a body of water. Dynamic lift provided by buoyant aquaplanes having trailing edges that are colinear with the top of a frame...
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4052800 |
System for gathering solids from the ocean floor and bringing them to the surface
A system for gathering solids disposed on the ocean floor by dragging a collecting apparatus along the ocean floor so as to deposit the solids in an extended pile, the collecting apparatus having a...
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3729855 |
APPARATUS FOR SEQUENTIALLY DEPLOYING SPECIMEN COLLECTORS AT SELECTED DEPTHS IN A BODY OF WATER
An oceanographic apparatus adapted to be submerged from a craft in a body of water by an end weighted cable for retaining a plurality of compacted specimen collectors for sequential release by...
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3548531 |
RECEPTACLE FOR LIVE BAIT
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3475846 |
NEKTON SAMPLER
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3461591 |
UNDERWATER SAMPLING APPARATUS
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3412498 |
Apparatus for procuring oceanographic samples
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3316670 |
Mid-water trawl
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3307284 |
Method and apparatus for drum trawling
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3256578 |
Composite link couplers for trawl nets
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3220137 |
Non-snagging shackle couplers for trawl nets
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3205652 |
Non-snagging link couplers for trawl nets
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3195260 |
Trawl net suspension
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3190024 |
Lower bosom suspension for trawl nets
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3188766 |
Trawl gear
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3169334 |
Trawlers and trawling
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3156996 |
Large capacity midwater trawl net
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3065562 |
Trawler
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3038273 |
Spread, speed, distance, and on-bottom senser for trawl nets
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3035365 |
Connector for trawl nets
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