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| Number | Title | Issue Date |
| 7252762 | Filter housing arrangement with cartridge guides An aquarium filter arrangement including a filter housing and a filter cartridge positionable within a filter chamber of the filter housing. The filter arrangement includes a hinged cover connected to the filter housing. The hinged cover is designed to collect conde... | 08/07/2007 |
| 6659044 | Water circulation apparatus and method An apparatus and method for conditioning water in open fish breeding cages, which can solve the problems of "bloom of harmful seaweed" and the "lack of dissolved oxygen concentration in the water". The apparatus includes a tube having adjustable open uppe... | 12/09/2003 |
| 6443100 | Debris separating system for fish pens A debris separating system for separating debris in a fish tank is formed by a standpipe extending up through the bottom of tank at the center of tank and terminating in an open end. A cover covers the opening and is spaced therefrom to provide an inlet o... | 09/03/2002 |
| 6371052 | Seawater circulating system The invention has the purpose of improving and maintaining the water quality inside bays where fish are cultivated, and achieving a habitat that is amenable for fish and other marine life. The supply of seawater from the open ocean into bays is controlled... | 04/16/2002 |
| 6269773 | Vacuum filtration means and apparatus for aquarium gravel cleaning A device for cleaning gravel in an aquarium includes a pump connected to a gravel casing such that the pump forms the top of the structure and the gravel casing the remaining body below the pump. The gravel casing houses the pump intake section and filter... | 08/07/2001 |
| 6202677 | Multi-functional cleaning and filtering system for aquarium tank A cleaning and filtering apparatus and method for a tank such as an aquarium. The major components are an inlet water controller, a suction unit, and a filter container unit. The filter container is selectively connected to the suction unit and a waste ou... | 03/20/2001 |
| 6187208 | Tank cleaning system Tank cleaning system is formed by an upper deck having a spout potion and a deck portion, injectors and a separation chamber having a conical bottom wall and a top formed by a waste baffle. The injectors connect the deck portion with the separation chambe... | 02/13/2001 |
| 6093320 | Tank cleaning system Tank cleaning system is formed by an upper deck having a spout potion and a deck portion, injectors and a separation chamber having a conical bottom wall and a top formed by a waste baffle. The injectors connect the deck portion with the separation chambe... | 07/25/2000 |
| 6058884 | Aquarium gravel surface cleaning means and apparatus The present invention is directed toward removing debris and impurities from the surface of aquarium gravel. The method comprises the utilization of a gravel casing, a pump and a filter, all interconnected. When the casing is held firmly against the floor... | 05/09/2000 |
| 5894936 | Drum separator for brine shrimp eggs A drum separator for separating brine shrimp eggs from a slurry containing an agglomeration of adult brine shrimp, brine shrimp eggs and debris includes a fluid source to maintain a slurry. The fluid source may be an internal spray jet disposed to spray a... | 04/20/1999 |
| 5791290 | Larval incubator for fish larva culture An incubator (10) comprising a cylindrical tank (11) with a bottom wall (12) and a side wall (13). The tank is provided with a clean or regenerated water supply system (17), a waste water discharge system (18), a device (19) for altering the gas level to ... | 08/11/1998 |
| 5655245 | Apparatus for removing debris from gravel in a fish pond A device for cleaning gravel and breaking up clusters of gravel in a fish pond comprises an integral body having a lower housing into which gravel is received and an upper housing which has an outlet for connection to a pump for drawing water and gravel i... | 08/12/1997 |
| 5636595 | Particle trap A device for removal of sediment particles from the water in a cultivating tank for aquatic organisms. The cultivating tank has a cylindrical outlet connected to an outlet tube located on the vertical axis of symmetry of the cultivating tank. A plate is s... | 06/10/1997 |
| 5293839 | Cultivation tank for aquatic organisms A fish cultivation tank including a suction unit rotatable about the bottom of the tank in response to a falling of the water level within the tank. A combined weight and float assembly moves in response to movement of the water level and is operationally... | 03/15/1994 |
| 5240596 | Aquarium cleaning apparatus An aquarium cleaning apparatus is described that preferably incorporates a number of features including: (1) a swivel head connected to the siphon hose which rotates as the apparatus is maneuvered around an aquarium; (2) extension tubes to lengthen the cl... | 08/31/1993 |
| 5199378 | Aquarium filtering system and method A system and method is presented for filtering waste and debris from an aquarium tank and from the water supply therein without having to empty the tank or remove the fish therefrom. The invention generally includes a movable cleaner positioned adjacent t... | 04/06/1993 |
| 5013369 | Method of cleaning bottom of feeding channel for fish and apparatus thereof A method of cleaning the bottom of a feeding channel supplied fresh water to be fed to fish such as fry of salmon and trout is disclosed in which a baffle means for preventing the flow of water in the feeding channel is maintained to the orientation such ... | 05/07/1991 |
| 4915059 | Raceway culturing of fish Fish are cultured in one or more flumelike watercourses or "raceways" bounded by raceway-defining means. The water flow rate is such that the fish swim substantially continuously to maintain position. The fish are configured too closely to assert territor... | 04/10/1990 |
| 4688519 | Apparatus and method for rearing aquatic species An apparatus and method for rearing aquatic species by employing a tank with a bottom surface having an arcuate shape are disclosed. An oscillating circulatory bottom member is provided to resuspend particulate matter, to aerate water within the tank, and... | 08/25/1987 |
| 4516528 | Fish growing system A commercial fish-growing system particularly adapted for use at the head waters of irrigation systems comprises an elongated, level ditch having a cross-section in the form of an inverted trapezoid as a fish-growing raceway. Water for the irrigation syst... | 05/14/1985 |
| 4399769 | Procedures for raising fish A procedure for feeding fish, such as rainbow trout, in a tank is disclosed. This procedure utilizes a suction sweeper on the bottom of the tank. By administering a predetermined amount of food to the tank and measuring how much food is not eaten by the f... | 08/23/1983 |
| 4369735 | Moving dam waterway cleaner Fish breeding raceways and other water channels of uniform cross-section are cleaned by a moving dam having a water passageway along the bottom to cause flushing of loose dirt as water accumulated behind the dam rushes through the passageway, and the wate... | 01/25/1983 |
| 4221187 | Apparatus for raising fish Apparatus for raising fish, such as rainbow trout, in a controlled environment is disclosed comprising a main fish tank equipped with means for providing laminar water flow through the tank and also equipped with sweeper means for removing particulate mat... | 09/09/1980 |
| 4176984 | Fish holding pan on traveling water screen and method of flushing same In a water screening installation, a traveling water screen removes both refuse and aquatic life from a stream. The aquatic life, such as fish and shrimp, are uplifted in pans that are mounted on an ascending run of the screen. At a location above the str... | 12/04/1979 |
| 4141318 | Fish culture tank A cylindrical fish culture tank adapted for a self-cleaning operation. Oxygenated water, whether fresh, recycled, or a mixture of fresh and recycled, enters a tangential inlet near the bottom of the tank and develops an upwardly flowing spiral action. The... | 02/27/1979 |
| 4028245 | Arrangement for conversion of foreign matter contained in water An arrangement for converting foreign and harmful matter found particularly in sewage water, in which the foreign matter is converted into harmless materials. A conversion tank with an intake for the water to be treated and having a drain for the treated ... | 06/07/1977 |
| 3981273 | Fish husbandry system A fish husbandry system which provides for high density raising of fish under controlled conditions. The fish are confined in a plurality of upright, water-filled tanks through which water is conducted in serial flow by conduits. Air or oxygen is introduc... | 09/21/1976 |
