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| Number | Title | Issue Date |
| 7281881 | Column-stabilized platform with water-entrapment plate An apparatus for use in offshore oil or gas production in which a plurality of vertical stabilizing columns are supported on a submerged horizontal water entrapment plate is provided to support minimum offshore oil and gas production facilities above a subsea wellhe... | 10/16/2007 |
| 7258509 | Diving apparatus A diving apparatus includes a pump that is actuated by muscular force. Diving weights are fastened to a fresh-air tank by surface zip fasteners. A traction element lies between the pump and the diver's limbs and to which it is attached a quick-release device. A floa... | 08/21/2007 |
| 7114882 | Aqua-terra planetary transport system and development pneumatic and electro-magnetic underwater tube-link transportation system An aqua-terra planetary transport system and development system utilizing a pneumatic and electromagnetic underwater tube link transportation system to move passengers and cargo rapidly between a network of interconnected land based terra station and ocean based aqu... | 10/03/2006 |
| 5639186 | Water funnel A diving bell having a first funnel-shaped member which has a cone-shaped portion with a cylindrical portion projecting from an apex-most portion of the cone-shaped portion. A lid for sealing and unsealing egress and passage of air and water through oppos... | 06/17/1997 |
| 5199193 | Working machine A working machine for use in a working system in which a pair of working machines, which are capable of traveling both on land and on a riverbed or the like, are respectively used for excavating gravel or the like on the bottom of the water and for transp... | 04/06/1993 |
| 5049004 | Underwater building and constructing method thereof An underwater building comprises a floating base that is to be fixed to a bottom under water or the sea and a building body is constructed on the base. The base floats on the water surface before construction of the body of the building, and the building ... | 09/17/1991 |
| 4904118 | Structure for viewing an underwater environment A structure for observing a marine environment comprising a housing affixed to a bottom of a body of water, such as an ocean floor, and extending toward and above the surface of the water. A reception area is disposed near the top of the housing and a wal... | 02/27/1990 |
| 4872781 | Open top floatable barge repair box with barge to box sealing system The present disclosure is directed to a watertight floodable barge repair box of generally L-shape, viewed from its end, having a leg and a foot. The leg has an open front and the foot has an open top so that the box may be placed against the side of the ... | 10/10/1989 |
| 4867608 | Method and apparatus for repairing submerged liners A working chamber is placed in a lined pond containing a body of contaminated water and filled with clean water to safely isolate divers while they repair damaged areas of the liner. The chamber is an open ended housing having a side wall of water impervi... | 09/19/1989 |
| 4615641 | Barge repair device A portable, floatable barge repair device is disclosed having a water tight box having front, back and side walls and a bottom, and a top opening. A superstructure extends generally upwardly from the back wall of the box, the superstructure having an uppe... | 10/07/1986 |
| 4433937 | Method of tunnel construction employing submerged caisson In a tunnelling method, a completely submerged caisson is received in a recess in the floor of a body of water. The caisson includes a pressurized bell-type work chamber that is open at the bottom and closed at the top to trap breathable gas inside it. An... | 02/28/1984 |
| 4268191 | Stand-by service structure for casual off-shore attendance The invention relates in improvement in or relating to a stand-by service structure for casual off-shore attendance. The service structure comprises an emergent articulated column pivotally connected with its submerged bottom end to a base member resting ... | 05/19/1981 |
| 4186532 | Underwater observatory An off-shore underwater observatory comprising a lower, submerged observation gallery fitted with at least one observation window and having a ceiling with an opening through which the observation gallery is accessible, and a body of water on top of the g... | 02/05/1980 |
| 4123858 | Versatile submersible device for dredging or other underwater functions A watertight vertically elongated rigid shell or hull of a size small enough to be transportable over highways has a detachable snorkle extending from its top and contains a power source which may be used to drive pumps within the device and/or to drive m... | 11/07/1978 |
| 3986280 | Apparatus for forming a concrete wall A method and apparatus is disclosed wherein a trencher digs a trench in the ground which forms a mold for plastic concrete which, when set, comprises a concrete wall. An arm extends into the trench behind the trencher and is secured to a scoring tool; the... | 10/19/1976 |
