Class 43/9.1 - Trawl

Subclass of Class 43 - Fishing, trapping, and vermin destroying
Definition: Subject matter wherein the open fabric of twine or equivalent
No. of patents: 40
Last issue date: 09/20/2011

Number	Title	Issue Date
8020336	Trawl net layer-by-layer collecting device A trawl net layer-by-layer collecting device includes a rectangular cylindrical frame configured to draw a plurality of trawl nets that are arranged in an up and down direction. The frame includes an upper edge to which a net mouth edge of an upper net of the upperm...	09/20/2011
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 (51, 61) for towing and hauling the trawl net (	01/23/2007
7028988	Cable handling system A system or apparatus and method for retrieving cable from water during marine operations is provided that reduces damage to the cable from pulling forces during the retrieval. A pulling device distributes the forces and stresses all along the cable components. In o...	04/18/2006
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) and locking rings (8) to conne...	04/26/2005
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 a material having a substantially incompressible cros...	05/11/2004
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 members are interlocked with the main member. The rigging sys...	09/24/2002
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 right-handed or left-handed lay) that is opposite to that associ...	04/23/2002
6357164	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 a material having a substantially incompressible cross-sectiona...	03/19/2002
6138397	Method and device for operation of a trawl There is referred to a process and an arrangement for control of one or more trawls (12, 40, 42) which are towed after a vessel (10), where the trawl(s) (12, 40, 42) are connected to the vessel by means of a number of cables (16, 14; 44, 45, 46), and wher...	10/31/2000
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 feed or for a food product as an additive. The euphausiids...	09/05/2000
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 of two support cross members, and a flexible net. Said plur...	03/03/1998
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 the bottom trawl wherein such sweepline system is provide...	05/21/1996
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 of water behind the trawler, and a conduit connected from...	11/08/1994
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 accumulator connected to the cylinder, for use on board a trawler...	10/04/1994
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 on-bottom time without cables and wires connected to the ship, ...	09/20/1994
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 two loops weave through the fishing net to hold it in plac...	06/14/1994
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 material which is substantially rigid to maintain the mesh co...	04/12/1994
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 achieve a desired small cell structure. The assembled buoy...	08/03/1993
5209005	System for positioning a fishing net A fishing net is held in place below a corkline by a series of holding devices. Each holding device has a crimped cylinder from which three loops extend. One of these loops may be tied around the corkline to position the crimped cylinder below the corklin...	05/11/1993
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 separate connectors (11, 11', 11", 11'", 50, 65, 65', 12'") wh...	06/16/1992
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 cable passes around the pickup block pulley and is attached ...	10/22/1991
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, just under the water. Crab line is run over two rollers, fo...	09/17/1991
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 that are secured to the respective opposite ends of three...	08/27/1991
5033221	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 separate connectors (11, 11', 11", 11'", 50, 65, 65', 12'") wh...	07/23/1991
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 elevation, the trawl net can be raised or lowered to a desired de...	04/10/1990
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 longitudinal edge at an obtuse angle, the joint between the body par...	11/28/1989
4805334	Fishnet hanging system A hanging cord is threaded through the top selvage of the net or web of a fishnet assembly and is secured at regularly spaced locations to separate anchor blocks which, in turn, are secured to the fishnet corkline. The anchor blocks have rigid bodies and ...	02/21/1989
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 force and water resistance. The net may be collapsed for haul...	11/15/1988
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 collect them in a recovery net. The invention also covers d...	07/26/1988
4697372	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 force and water resistance. The net may be collapsed for haul...	10/06/1987
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 (49) attached to a towing cable. The slats (50,54) have uprig...	07/01/1986
4558534	Plankton sample taking apparatus Plankton sample taking apparatus comprises a net coupled to a container having an open mouth separably fitted into a coupling member. The adjacent parts of the container and the coupling member are nested and configured to form a wedging seal therebetween...	12/17/1985
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 conventional type trawl fishing net with a flexible but normall...	05/07/1985
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 concentrate aquaculture on the floor. The wing is attached t...	04/09/1985
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 the rear of the net defines a tail. A pair of cages correspo...	04/09/1985
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 are connected to the harness lines of the main dragnet....	11/02/1982
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 established in the control system to produce a first error sig...	04/06/1982
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 leaving the rear of the net open. Under action of its control d...	09/30/1980
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 having a straight rigid top member defining the opening of...	04/04/1978
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 relatively large inlet opening and a relatively small exi...	10/11/1977

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Class 43/9.1 - Trawl