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| Number | Title | Issue Date |
| 7830318 | Electrically small antenna An antenna system, with a loop antenna and a loop current, is provided for transmitting an electromagnetic signal through a medium. The loop antenna has an E field transducer that generates an E field, and an H field transducer that generates an H field. The E and H... | 11/09/2010 |
| 6577268 | Outboard radio signal test system and method The present invention provides an outboard test facility that is operable for testing a ship's direction finding antenna system in all directions as the ship circles while receiving test signals from the outboard test facility. The test facility provides ... | 06/10/2003 |
| 6225940 | Radar reflecting system and method for small water craft A detection system for small water craft, such as a kayak. Radar reflective material is incorporated in the surface of the kayak or other water craft, and also is incorporated in surface areas of water craft accessories, such as cushion, life vest or padd... | 05/01/2001 |
| 6195057 | Submarine antenna assembly for deployment through ice layer A submarine antenna assembly comprises a tubular body having a removable end cap, a mast stowable in the body and extendible therefrom and having elements mounted thereon, a penetrator stowable in the body and movable therefrom by the mast upon removal of... | 02/27/2001 |
| 5964175 | Conformal detachable platform array The invention provides a system for attaching one or more unmanned, hydroamically shaped, autonomous, undersea platforms to the bow of a submarine. An array of depressions, each matching the shape of the platforms, is provided in the bow of the submarine... | 10/12/1999 |
| 5550555 | Structures subject to loading A structure comprises a first component subject to loading and connected to a second component via a load transmitting member so that the loading exerted by the first component is imposed on the second component. The first component includes a surface sec... | 08/27/1996 |
| 5434584 | Submarine communications system A low frequency submarine communication system which utilizes the submarine ody as part of the antenna. The antenna is coiled around the submarine hull and utilizes the hull as the core for low frequency (below 1000 Hz) communication. The system allows com... | 07/18/1995 |
| 5014068 | Transmission coupler antenna A broad band HF communications antenna for surface ships has an increased rvivability over the currently used twin fan antennas. Capacitively coupling a long, flat conductive strap to existing ship structures helps achieve broadband performance. Integral ... | 05/07/1991 |
| 4543582 | Antenna for a submarine vessel For radio communication with submarine vessels frequency ranges with very low frequencies are used. Even at these frequencies the penetration depth in salt water is only approximately 10 to 20 meters. In order to improve the signal noise ratio or to exten... | 09/24/1985 |
| 4300468 | Position interlock system for submarine masts and closure A submarine's mast and its protective closure are prevented from inadvertly damaging each other while deploying or retrieving the mast and while securing the closure. Interconnected logic circuitry electronically prevents an improper actuation sequence s... | 11/17/1981 |
| 4283727 | Separable microwave coupling and antenna using same A transmission path between a source of microwaves, such as a radar transceiver, and a load rectilinearly movable with reference thereto, such as an aerial mounted on a retractable mast of a submarine periscope, comprises two relatively movable parallel w... | 08/11/1981 |
| 4200873 | Folded tapered coaxial cavity-backed annular slot antenna A low profile transmitting antenna consisting of a circular slot in a coal cavity that is folded several times. The last inner fold of the coaxial cavity is loaded with the tuning coil. The tuning coil can in the alternative be connected in series with t... | 04/29/1980 |
| 4177468 | Inflatable cavity-backed annular slot transmitting antenna A transmitting antenna that can be inflated with air or a liquid dielectric nd floated in seawater. It consists of a cuplike cavity backing a radiating annular slot antenna. It can be used to communicate to submarines or surface ships or as a navigation tr... | 12/04/1979 |
| 4093935 | Expandable transducer array An array of sonar transducers enclosed within a flexible webbing and having spring members located between the transducers for urging the transducers against the webbing to provide a rigid structure which secures the transducers in their positions in the ... | 06/06/1978 |
