Gyrocompass

Geometrical instruments – Indicator of direction of force traversing natural media – Gyroscopically controlled or stabilized

Reexamination Certificate

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Details

C033S324000, C074S00500R, C074S00560C

Reexamination Certificate

active

07114263

ABSTRACT:
A gyrocompass has a liquid tank containing a supporting liquid therein, a gyrosphere floating in the liquid tank by the supporting liquid and whose central portion is rotatably supported by a center pin provided in an upper portion of the liquid tank, a gyro rotor incorporated in the gyrosphere, two dish-shaped electrodes disposed at a lower portion of the liquid tank and a lower portion of the gyrosphere, and opposed through the supporting liquid, and a pair of follow-up electrodes disposed in a vicinity of a equator of the liquid tank and opposed to be apart by 180°, and two belt-shaped electrodes disposed in vicinities of equators of the liquid tank and the gyrosphere in a state that the follow-up electrodes are located therebetween, and opposed through the supporting liquid, wherein electricity is fed to the gyro rotor through the dish-shaped electrodes and the belt-shaped electrodes.

REFERENCES:
patent: 3386179 (1968-06-01), Thomaier et al.
patent: 4471665 (1984-09-01), Hojo et al.
patent: 4517750 (1985-05-01), Netzer
patent: 6131297 (2000-10-01), Yamamoto et al.
patent: 6453570 (2002-09-01), Rahn
patent: 2005/0193579 (2005-09-01), Kogure
Torao Mozai et al., (1971) “konpasu to jairo no riron to jissai (Theory and practice of compass and gyro)” , published by Kaibundou Shuppan Kabushiki Kaisha with concise English explanation.

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