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| Number | Title | Issue Date |
| 7305929 | Two piece view port and light housing with swivel light The present invention is a view port suitable for installation under the water line of a vessel wherein the view port comprises a flange made from a corrosion resistant material and a body made from a heat resistant material. An alternative embodiment of the inventi... | 12/11/2007 |
| 7246566 | Combination surface and submersible watercraft A modular watercraft capable of both surface and submersible accommodation and transport of passengers. In one embodiment of the submersible watercraft of this invention, the hull comprises air bladders, thereby avoiding the engineering complexity, weight and cost o... | 07/24/2007 |
| 7104209 | Hybridhull boat system A hull is formed of a forward section, a rearward section and intermediate sections there between. The forward section is in a generally triangular configuration. The forward section has a forward-most point. The forward section has rearwardly extending sides. The r... | 09/12/2006 |
| 7059261 | Wastewater ballast system and method The invention discloses a wastewater ballast method that includes the steps of collecting wastewater, treating the collected wastewater, storing the treated wastewater, and discharging the treated wastewater during ballast operations. ... | 06/13/2006 |
| 7040244 | Watercraft having plural narrow hulls and having submerged passive flotation devices A watercraft has at least two narrow hulls with a shallow draft and has one or more passive flotation devices that are entirely submerged. The hulls enclose the power trains for the watercraft and are accessible from the compartments of the watercraft. The passive f... | 05/09/2006 |
| 7007628 | Watercraft and viewing system kit An improved watercraft having a viewing system, and a kit for installing a viewing system in an existing watercraft. The watercraft includes a viewing opening through a portion of the bottom of the hull and a viewing system is attached thereto. The viewing system in... | 03/07/2006 |
| 6941883 | Submerged underwater observation booth The invention concerns the structure of a “SUBMERGED UNDERWATER OBSERVATION BOOTH”, including a floating station on water surface, and a piping system to convey fresh air and power into the SUBMERGED BOOTH. The SUBMERGED BOOTH provides an atmospheric environment... | 09/13/2005 |
| 6805064 | Personal water craft A personal water craft is a device having a unitary hull body that includes a substantially horizontal planar deck for supporting an occupant in a pronate position and a shell integral with the deck, wherein the shell is submersible into water. A cushioned pad is af... | 10/19/2004 |
| 6672233 | Floating body The invention relates to a floating body, especially a floating body used as a support for an underwater tunnel (11). In order to obtain a high degree of freedom and a large amount of stability while at the same time guaranteeing easy assembly, a frame st... | 01/06/2004 |
| 6612251 | Mobile undersea habitat A mobile undersea habitat includes an elongated vessel having a hull providing an elongated recess opening downwardly to the sea, and a cooperatively dimensioned elongated column seated within the recess. The column includes an elongated structural member... | 09/02/2003 |
| 6572424 | Personal swim craft with an underwater viewing area A personal swim craft that has a liquid filled viewing area that is simply and inexpensively created within the craft requiring no tooling for molds or related costs. A walled cavity through the craft is sealed at its upper and lower openings with transpa... | 06/03/2003 |
| 6302043 | Discovery boat The invention relates to a discovery boat (1) with a viewing cabin located beneath the surface of the water. Said viewing cabin has large viewing windows looking out to the side and forwards. According to the invention, the viewing cabin is a transparent ... | 10/16/2001 |
| 6241569 | Sea windows for rafts An underwater observation device in combination with a buoyant craft provides an observer with a clear and unobstructed view of underwater scenes. The underwater observation device comprises an upper transparent window, a lower transparent window, and a b... | 06/05/2001 |
| 6076479 | Device to observe the sea bed from the deck of a vessel A device to observe the sea bed from the deck of a vessel is formed by a cubicle that has attachment points to attach it to the structure of the stern of the vessel. This cubicle has a vertical wall that forms a sealed block on the bottom wall of which ar... | 06/20/2000 |
| 5988088 | Underwater sightseeing craft The present invention is characterized by an underwater sightseeing craft, wherein a plurality of displacement bodies for sightseeing equipped with underwater sightseeing rooms are provided and paralleled with a fixed distance therebetween, wherein floati... | 11/23/1999 |
| 5954558 | Underwater viewing device An underwater viewing device for use during ice fishing for permitting a user to see underwater through a hole in the ice. The device includes a viewing tube having open top and bottom ends. An annular resting flange is disposed around the viewing tube. A... | 09/21/1999 |
| 5595133 | Underwater viewing surface watercraft An air-to-water surface operating underwater viewing craft which succeeds in providing man with both speed and the same extravagant vision for underwater viewing that he/she possesses above the water with respect to field of view and clarity. This is achi... | 01/21/1997 |
| 5476055 | Watercraft with underwater viewing port Watercraft has a hull with a viewing opening therein extending between upper and lower portions of the hull. A transparent viewing unit is fitted within the viewing opening and has a periphery spaced apart from side wall of the viewing opening to define a... | 12/19/1995 |
| 5447459 | Underwater viewing board A buoyant board for viewing underwater objects while an observer is lying in a prone position is of seamless, unitary construction, and has a viewing well extending through the body of the board that is integrally formed with the body. The body may be for... | 09/05/1995 |
| 5337692 | Transparent bottom boat A recreational boat with a viewing plane which may be in contact with the water when the boat is ladened. The boat being constructed from two main pieces, a transparent hull piece formed with sponsons specially shaped to assist in maneuvering and a deck p... | 08/16/1994 |
| 5315952 | Method of making and apparatus of a view window In a semi-submersible ship, magnifying panoramic view windows are provided that are watertight, strong, highly durable, and resistant to impact and optical occlusion. A laminated transparent sheet is formed that is surrounded by a ribbed gasket. A steel f... | 05/31/1994 |
| 5265549 | Hydro-propelled ship A hydro-propelled ship is provided which consists of a hull having a double wall, so as to float on a top surface of a body of water. A pair of propulsion turbines are each affixed to a starboard side and a port side of the hull of the ship in a catamaran... | 11/30/1993 |
| 5143009 | Underwater vehicle with a passive optical observation system An underwater vehicle is disclosed being equipped with a passive optical observation system. The underwater vehicle has an observation window at its disposal which exhibits a diameter in the range from 0.3 to 3.0 m and a curved surface. In order to increa... | 09/01/1992 |
| 5067427 | Semi-submerged water vehicle A semi-submerged water vehicle having a small rider's compartment designed to accommodate primarily a single rider that can operate the watercraft in either a standing or a seated position. There is provided both an underwater porthole and an above-the-wa... | 11/26/1991 |
| 5010835 | Semi-submerged glass boat An improvement is made in terms of rolling of a semi-submerged glass boat whose hull is formed of the main hull and float tanks provided on the lateral sides of the upper part of the main hull, and anti-rolling fins each projecting outside of a straight l... | 04/30/1991 |
| 5000106 | Transparent boat A "glass boat" is provided including wooden structural members provided with a skin of plastic. The plastic panels are secured to mahogany structural members with stainless steel screws. An outer mahogany strip is applied on top of the screws thereby plac... | 03/19/1991 |
| 4973279 | Appliance for assisting a swimmer swim, float and/or being towed behind a boat The appliance for assisting a swimmer in swimming, floating and being towed by a boat, includes a substantially board-shaped floating body having a leading edge and a trailing edge each of which have a V-shaped cross section. The floating body has a glass... | 11/27/1990 |
| 4946412 | Swimming aid A swimming aid comprises a floating body and a bottom viewer and may be used at a swimming pool or in the sea. The floating body is U-shaped in cross section and has a hood at the top thereof. The floating portion buoyantly supports the upper half of the ... | 08/07/1990 |
| 4928614 | Submersible observation vessel A submersible observation vessel having a transparent acrylic hull. The hull comprises a plurality of transparent acrylic cylinders, a plurality of seals to prevent leakage between the cylinders of the hull, a front hatch hinged on the first seal, and a b... | 05/29/1990 |
| 4925417 | Underwater viewing paddle board An apparatus for underwater surveillance that consists of a floating platform having bow and stern with an aerodynamically true forward cowl formed on the bow end, the forward approximately one-third of the platform. Immediately aft of the cowl there is d... | 05/15/1990 |
| 4895539 | Underwater viewing device The invention relates to an underwater viewing device wherein a viewer can immerse the lower portion thereof into a body of water and view clear, undistorted images of objects which appear immediately below the underwater viewing device. The underwater vi... | 01/23/1990 |
| 4854256 | Aquatic show boat An aquatic show boat has a pair of separated, long narrow hulls joined in a parallel fashion (catamaran like) by a plurality of connecting pieces which together with both hulls enclose the perimeter of at least one activity area. Demonstrations, exhibits ... | 08/08/1989 |
| 4852508 | Underwater window for vessels An underwater window for vessels which is provided to cover an opening made on the hull has a first transparent plate curved to form a convex surface bulging toward the outside of hull outwardly from the hull. One or two additional transparent plates are ... | 08/01/1989 |
| 4844595 | Viewing device for flotation body In accordance with the present invention a viewing device for flotation bodies is provided which comprises a body having an interior defined by its side walls and at least one transparent end wall. In one embodiment using two transparent end walls, the tr... | 07/04/1989 |
| 4841899 | Kayak, folding A frame made up of structural pieces (wooden) and hardware pieces interconnecting them, and a flexible hull. The frame includes a main frame and coaming. The main frame is separable transversely at the middle, and each half thus formed is insertable into ... | 06/27/1989 |
| 4840458 | Fixed shutter construction for a split-sphere observatory dome A split-sphere observatory enclosure wherein the antrum segment is capped with a shutter lid. The rotor which is the active shutter segment sweeps through an elongate curved aperture in the shutter lid to reveal the oculus. The oculus may be completely co... | 06/20/1989 |
| 4840592 | Power driven underwater viewing platform An underwater viewing platform is described which has a stern mounted electric drive motor whose direction and speed may by varied by forward mounted controls located adjacent the prone-lying operator's hands near a large forward mounted viewing window. A... | 06/20/1989 |
| 4809630 | View port for an underwater vehicle View port for an underwater vehicle, e.g. for a remotely operated vehicle (ROV) usable for underwater inspection, and provides a view port (2) which can form a component of a pressure hull of an underwater vehicle, and which can be sandwiched between hull... | 03/07/1989 |
| 4787870 | Propeller clearing means The invention provides means to enable the propeller of a power driven watercraft to be viewed and cleared of any fouling material by access from the interior of the craft; suitably the propeller is viewed through and access is gained by means of a pierce... | 11/29/1988 |
| 4724785 | Frame support for connecting two float members A boat includes two sail surf-board floats, a frame cooperating with each of the floats, a rigid framing comprising at least four fastening lugs to be associated pairwise with each of the frames and so arranged as to retain the frames and thereby the floa... | 02/16/1988 |
