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| Number | Title | Issue Date |
| 6848395 | Method and structure for enhancing aquariums By adding an evacuated vertical structure onto a body of water where part of the structure extends above the body of water, the water level rises into the structure because of the vacuum. Use of the structure increases the overall volume of water in an aquarium and ... | 02/01/2005 |
| 6543386 | Separator for a fish display tank A substantially transparent separator for separating fish or other aquatic animals within a water-filled display tank is disclosed. The separator divides the tank into multiple, fully viewable regions in fluid communication with each other. The separator ... | 04/08/2003 |
| 6443099 | Separator for a fish display tank A substantially transparent separator for separating fish or other aquatic animals within a water-filled display tank. The separator divides the tank into multiple, fully viewable regions in fluid communication with each other. The separator comprises at ... | 09/03/2002 |
| 6357391 | Fish tank with filling by aspiration of air A fish tank with filling by aspiration of air which includes a lower zone (1) and an upper zone (2), the lower zone (1) being hermetically sealed by its sides and lower part and having has an opening (1a) in its upper part in the manner of a receptacle, w... | 03/19/2002 |
| 6039005 | Aquatic habit extension device An aquatic habitat extension device uses a circulation assembly to reversibly maintain a volume of water above the surface of an underlying body of water. The aquatic extension can be used alone or with other similar aquatic habitat extensions that themse... | 03/21/2000 |
| 6019064 | Animal observation system An animal observation system comprising two enclosures, each configured to provide a habitant for air-breathing animals. A cylindrically shaped gallery connects the enclosures. A section of the gallery is transparent and waterproof. Also included is a fis... | 02/01/2000 |
| 5970999 | Hydraulic vacuum pump The hydraulic vacuum pump (HVP) uses a centrifugal water pump with unconventional inlet and outlet connections that cause unconventional patterns of fluid flow. Valves are not required for operation. The submerged pump outlet must be kept open and unobstr... | 10/26/1999 |
| 5738137 | Apparatus for creating surges in an aquarium An apparatus for creating surges in an aquarium uses a pump to move water from the aquarium into an external tank. A siphon tube periodically creates surges by draining water from the tank back into the aquarium. The siphon tube has an inlet at a predeter... | 04/14/1998 |
| 5634433 | Fish tank bridge and method for making same The combination of two aquarium fish tanks bridged by a plastic bridge tube is disclosed. The bridge tube is shaped to accommodate the insertion of the ends of said bridge tubes in each of the fish tanks. A pump and filter are connected to a narrow diamet... | 06/03/1997 |
| 5575236 | Method of using an ant habitat construction An ant habitat construction bowed in shape in a convex manner between its side edges, and large pad devices help to provide mechanical stability. Upper and lower hollow hinge devices enable similar units to be connected together in an articulated manner a... | 11/19/1996 |
| 5230298 | Aquarium/terrarium crossover bridge assembly A decorative A-frame type water transfer bridge is provided for selectively siphoning water from one or more aquarium fish tanks. A siphon pump evacuates the desired amount of air to cause the water to enter and fill the bridge. A bleeder valve with a vis... | 07/27/1993 |
| 4044721 | Fish tank construction A fish tank construction which is made with interior partitions through which fish can swim and which has "rooms" simulated as those normally inhabited by human beings as backdrops to provide a form of simulated house. The construction includes a fish cro... | 08/30/1977 |
