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US 6,665,944 B1Granted
Magnetic marine compass
AssigneeRule Industries, Inc.
InventorsYu-Feng Wei, Bruce Wilkinson, Scott K. Batchelder
Life of this patent
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Abstract
A self-balancing marine compass. A described embodiment includes a pivot assembly, a buoyant-magnetic chamber assembly, a reading card assembly, and a dome. The pivot assembly includes fulcrums, each of which fit within fulcrum holders located on an inner surface of the reading card assembly. The buoyant-magnetic chamber assembly is positively buoyant within the dome and includes pivots meeting with pivot axes of the fulcrum holders. This embodiment is also a no spin compass.
Claims8
A no spin, self-balancing marine compass, comprising:
- a pivot assembly;
- a buoyant-magnetic chamber assembly positioned over said pivot assembly;
- a reading card assembly surrounding said buoyant-magnetic chamber assembly;
- a dome encompassing said buoyant-magnetic chamber assembly, said reading card assembly, and said pivot assembly;
- and
- fluid within said dome, wherein said buoyant-magnetic chamber assembly is positively buoyant within said fluid and wherein said buoyant-magnetic chamber assembly, said reading card assembly, and said pivot assembly achieve a near neutral buoyancy within said dome, thereby mitigating spin of said buoyant-magnetic chamber assembly relative to said dome.
3 more elements
Dependencies are inferred from the claim text.