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US 11,442,154 B2Granted
Passive solar identification system for underwater lift bags and flags
OwnerRichard Preston Riels, Daniel Greenberginventors
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Abstract
The invention is a system that enables passive sonar identification of underwater items by making use of lift bags and/or flags, having distinctive sequences of bands of sonar-signal-reflecting materials, wherein the lift items are partially inflated so as to present a predictable orientation with respect to the floor of a body of water and its surface.
Claims6
A system comprising:
- a lift device;
- said lift device resting on floor of a body of water is partially inflated and pointed essentially toward surface of said body of water;
- said lift device has one or more bands of sonar-signal-reflective material such that when said lift device is pointed essentially toward said surface said one or more bands comprise bands that are essentially horizontal as viewed from a side;
- and
- said one or more bands, where more than one, are essentially parallel to one another and essentially vertically displaced from one another.
2 more elements
Dependencies are inferred from the claim text.