Resources Contact Us Home
Flotation bag assembly

Image Number 4 for United States Patent #4675686.

An apparatus for the stable support of a structure, such as an antenna, in a fluid medium, such as the ocean. A flotation bag supporting an antenna is stabilized by the following features, which can be used individually or in combination. A partially submerged ribbon fence supported by a submerged damper skirt dissipates the kinetic energy of the flotation bag caused by the movement of the ocean and water that encroaches upon the bag. A flexible connection between the bag and the payload enables the bag and the payload to undergo limited motion without affecting each other. Thus, the bag's motion is decoupled and totally independent of the payload. The housing which supports the payload has a flooded chamber, lowering the center of mass of the apparatus. The bottom of the flotation bag is inwardly arched, moving the bouyancy away from the center of the bottom of the bag, enhancing stability and allowing the bag to float lower in the ocean, keeping the damper skirt submerged. The payload includes an r.f. signal source. The apparatus is designed to constrain the motion of the antenna to within very narrow operational limits.

  Recently Added Patents
Semiconductor device with hetero-junction bodies
Electronic product design
Relative pose estimation of non-overlapping cameras using the motion of subjects in the camera fields of view
Mobile interactive kiosk method
Front portion of a vehicle, toy, and/or replicas thereof
DFPase enzymes from Aplysia californica
Probiotic enriched and low organic acid food products
  Randomly Featured Patents
Washing compositions
Differential drives including flexible interconnecting drive elements
System and method for lost data destruction of electronic data stored on a portable electronic device using a security interval
Antimicrobial compositions
Enantioselective preparation of s-2R.sub.1,2R.sub.2 -1,3-dioxolane-4-methanol and derivatives thereof
Closure lever, particularly for sports shoes
Laser treatment apparatus
System and valve unit for mixing-delivery sanitary water and/or purified water
IC Device burn-in method and apparatus
Method for producing dried particulate coal fuel and electricity from a low rank particulate coal