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| Number | Title | Issue Date |
| 7837525 | Autonomous data relay buoy An easily deployable data relay buoy, in some embodiments, has a diesel powered alternator and storage battery, providing long service life. The data relay buoy has mechanical characteristics that allow it to maintain antenna stability in the presence of seas states... | 11/23/2010 |
| 7699677 | Profiling float and usage of the profiling float Provided is a profiling float that can minutely and surely control effective buoyancy acting on the float in itself, and usage of the profiling float. The profiling float according to the present invention is equipped with a float chamber forming an airtight ... | 04/20/2010 |
| 7311000 | Wind speed measurement apparatus and method A buoyant platform apparatus, such as a buoy, is described that comprises a laser radar (lidar) wind speed measurement device. The lidar is arranged to make wind velocity measurements at one or more remote probe volumes of known position relative to said platform. T... | 12/25/2007 |
| 7258836 | Freeze resistant buoy system A freeze resistant buoy system includes a tail-tube buoy having a thermally insulated section disposed predominantly above a waterline, and a thermo-siphon disposed predominantly below the waterline. ... | 08/21/2007 |
| 7244156 | Lightweight marine buoy and method of handling the same A lightweight constructed navigation buoy, and method for handling the same, is provided with waterborne stability comparable to the conventional and much heavier navigation buoys. The desired waterborne stability is achieved using a liquid-ballasting/-venting syste... | 07/17/2007 |
| 7117813 | Submarine boat The submarine is equipped with a fluid gas pressure container, in particular for storing liquid oxygen. The liquid gas pressure container is arranged within the pressure hull of the submarine and is surrounded by an outer pressure container which is likewise stored ... | 10/10/2006 |
| 7112111 | Closed loop buoyancy system A closed loop buoyancy system wherein a device housing the system is submerged in a liquid filled container, the device dives to the bottom of the container, remains for a regulated amount of time, and then floats back to the surface of the liquid. ... | 09/26/2006 |
| 7001233 | Stackable buoy with rope nesting grooves The buoy has small and large cylindrical sections contiguous with each other and having a common central axis. A hole extends along the common central axis, for receiving a mooring rope. The small section has dimensions to fitly engage into a cavity in the bottom of... | 02/21/2006 |
| 6971934 | Autonomous liquid filled buoy A buoy system includes a sea-bed pump station having separate reservoirs of lighter-than-water and heavier-than-water liquids. The reservoirs are in fluid communication with peristaltic pumps that are operated via a preprogrammed control within the station. A buoy h... | 12/06/2005 |
| 6916219 | Remote sampling system An automated system for periodically sampling water bodies, such as lakes, and delivering the test results to a remote computer using a communication system. In particular, the system has a variable buoyancy profiler with a dynamic buoyancy compensator responding ap... | 07/12/2005 |
| 6824289 | Beverage accessory device A beverage accessory device having a housing with a cavity therein, a buoyant filler within the cavity, a buoyancy-reducing feature to incrementally decrease the buoyancy of the device, a straw receptacle attached to the housing, and a switchable light-source within... | 11/30/2004 |
| 6592416 | Target for naval gunfire A floating target for naval gunfire. The target includes an inflatable buoyant superstructure with a drogue chute attached to the periphery of the bottom of the superstructure. The drogue chute, when in use is well underwater. The drogue chute is an open ... | 07/15/2003 |
| 6463800 | Energy conserving moored buoyant ocean profiler An energy conserving moored buoyant ocean profiler wherein an instrument carrying vertically traversing buoyant member of low buoyancy is interconnected with a second buoyant member of high buoyancy to travel in the opposite direction at lesser distance, ... | 10/15/2002 |
| 6406624 | Flocculation apparatus and apparatus for floating upwardly in a liquid and for moving downwardly in the liquid under the influence of gravity Flocculation apparatus and flotation apparatus useful in flocculation apparatus for floating paddles upwardly and allowing gravity to move paddles downwardly through a liquid to agglomerate particles suspended in the liquid.... | 06/18/2002 |
| 6142092 | Depth control device A depth control device (1) for a subsmersible body comprises a depth monitor (5) and depth controller (6). A variable volume buoyant body operates under the control of the depth controller and comprises three chambers, the first (10) containing air and th... | 11/07/2000 |
| 5911542 | Unsinkable floating dock system A dock module comprises an air-tight flotation chamber with a buoyant foam material positioned within an upper end thereof. The flotation chamber includes aperture positioned on its bottom end to permit water to enter the chamber and serve as a ballast. T... | 06/15/1999 |
| 5887538 | Sailboard for a wind powered sailing apparatus The novel sailboard is arcuate about its longitudinal and transverse axes, and has blading fore and aft for supporting the sailboard upon a frozen surface. The front blading is carried on a pivotal plate which has spring loading and damping, and the rear ... | 03/30/1999 |
| 5865663 | Toy submarine ballast system A ballast system for toy submarines comprises a plumbing device, a flexible bag, a piece of wire and a rod. The ballast system draws water in and forces water out by decompressing and compressing the flexible bag.... | 02/02/1999 |
| 5816874 | Remote underwater sensing station A portable, anchored sensor module for collecting fresh water environmental data over a range of depths, is supported relative to a buoy having a power supply and control circuitry. A depth control housing supports the underwater sensor module. The depth ... | 10/06/1998 |
| 5655938 | Variable buoyancy ballast and flotation unit for submerged objects or structures A variable buoyancy float/ballast assembly has control means allowing it to sink otherwise floating objects and bring sunken objects to the surface or control their placement in the water column. The assembly can be employed to tension mooring lines, redu... | 08/12/1997 |
| 5516317 | System to sink and float buoys Submarine (6) devices consisting of cavity to hold sand and an inflatable air bladder (10) are located beneath and connected to floating buoys (2). The weight of the sand when put inside the cavity is enough to sink buoy (2) until submarine (6) sits on th... | 05/14/1996 |
| 5320568 | Swimming pool animal escape device A floating device is arranged to provide for a stepped platform to permit accommodation of an animal trapped within a swimming pool environment, wherein the stepped platform includes a plurality of concentric rings, with an uppermost boss having a concave... | 06/14/1994 |
| 5283767 | Autonomous oceanographic profiler There is disclosed a portable free drifting oceanographic instrument package for cyclically collecting oceanic and/or fresh water environmental data over a range of depths. The instrument includes, in combination, a submersible housing having mounted ther... | 02/01/1994 |
| 5273468 | Marker buoy A marker buoy for marking a particular spot on the bottom of the sea despite heavy seas. The buoy includes a hollow cylindrical chamber whose outer surface forms a spool. A length of line is attached to the chamber and wound around the spool with an ancho... | 12/28/1993 |
| 5257954 | Rescue buoy package A rescue buoy package for use on a boat for marking the location of a person overboard and for remaining in that location until help can arrive includes an outer cylindrical tube that is mounted within arm's reach of the ship's helm and an inner cylindric... | 11/02/1993 |
| 5251571 | Submersible cage system for culturing aquatic animals A submersible cage system for cultivating aquatic animals comprises a rigid frame defining a geodesic enclosure, a net supported by the rigid frame to define a water permeable enclosure for the aquatic animals, the rigid frame being rotatable about a hori... | 10/12/1993 |
| 5228406 | Subsea exploration apparatus This subsea exploration apparatus comprises a ballast tank and a shuttle (7) with a watertight enclosure (10) which contains instrumentation for measurement, control and transmission of signals to a surface buoy. The enclosure is guided along a cable (1) ... | 07/20/1993 |
| 5197826 | Offshore gas flare system Apparatus is described for flaring large amounts of natural gas at a location spaced from an offshore production platform. The apparatus includes a spar buoy structure (32, FIG. 1) anchored at a location on the order of 0.1 kilometer from the platform (12... | 03/30/1993 |
| 5129848 | Controllable variable depth mooring system and method A mooring system and method of anchoring a buoyant module (16) in a submerged location in the sea for supporting an underwater structure such as a plurality of acoustical arrays (18) for receiving and transmitting acoustical signals is disclosed. The buoy... | 07/14/1992 |
| 4860487 | Multi-cycle sea bed traversing system An inflatable float with timer and pressure controls to enable underwater gear to be automatically lifted off the sea bed at intervals and moved to a new location. The gas for inflating the float may be generated by chemical means or galvanic action.... | 08/29/1989 |
| 4692906 | Ocean bottom seisometer An improved ocean bottom seismometer is disclosed wherein a skirted spherical configuration provides bottom weight and provides a sealed area for seawater ballast which may be ejected to provide positive buoyancy for retrieval.... | 09/08/1987 |
| 4662301 | Floating platform for decorative articles A floating platform for supporting articles in a swimming pool or other body of water. The platform has a toroidal outer chamber filled with air, a toroidal middle chamber filled with water, and a toroidal inner chamber filled with air. An article support... | 05/05/1987 |
| 4498491 | Thermo-electric valve A thermo-electric valve for scuttling floating devices comprising, a cyliical sleeve affixed to and passing through a bulkhead separating a pressurized medium on one side from a lower pressure space on the other side, a piston moveably mounted within the... | 02/12/1985 |
| 4464131 | Water ballast compartment for buoyant marine devices An improvement in buoyant marine devices, such as pyrotechnic markers, the displacement of which normally decreases during operation as a result of weight loss. The device is provided with a ballast means and means to enable the ballast compartment to fil... | 08/07/1984 |
| 4443203 | Floating marker A marker bouy to positively mark positions on a water surface with respect to the bottom. The marker includes a generally hollow body with line wound around the approximate center thereof with a weight on the end of the line which will cause the marker to... | 04/17/1984 |
| 4434650 | Hydrocarbon sensor float A hydrocarbon sensor float for use in detecting the presence of hydrocarbons on the surface of a liquid provides an elongated floatation member having a top end and a bottom end and also having a cavity located centrally therealong and extending completel... | 03/06/1984 |
| 4364325 | Passive controlled buoyancy apparatus A passive near neutral buoyancy platform includes a structure housing a series of gas-filled cells, restrained in their maximum volume regardless of the internal charge pressure, and collapsible in character when external pressure exceeds the charge press... | 12/21/1982 |
| 4319372 | Submarine rescue cable reel Apparatus for delivering a heavy cable such as a rescue cable from the oc's surface to an extended depth for attachment to an object such as a stranded submarine and, after attachment of the free end of the cable to the object, delivering the cable to th... | 03/16/1982 |
| 4301761 | Depth and hover control system for unmanned underwater vehicle In an unmanned underwater instrumentation vehicle, travel to an assigned th and cyclical excursions between depth tolerances above and below that depth are effected by a mechanism that alternatively drops vernier weights by firing explosive release bolts... | 11/24/1981 |
| 4266500 | Hover control system for a submersible buoy A compressed fluid hover control system for a submersible buoy in which the water level in a buoyancy chamber is controlled in accordance with external water pressure and predetermined levels of water in the buoyancy chamber. More specifically, a submersi... | 05/12/1981 |
