Digital compass and gimbal assembly for two conductor connection
Patent 4047168 Issued on September 6, 1977. Estimated Expiration Date: 
September 6, 1994. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
September 6, 1994. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesInventorAssigneeApplicationNo. 05/579973 filed on 05/22/1975US Classes:33/363K, Photoelectric pickoff33/363R, Electrical telemetering340/870.29, Photoelectric cell pickup340/870.39, With supply voltage regulation or compensation341/14Having optical waveguideExaminersPrimary: Sloyan, Thomas J.Attorney, Agent or FirmAbstractA remote reading magnetic compass operative with only two electrical connections for both power and data purposes. The compass includes a disc which is photoelectrically sensed to provide output signals representative of compass heading and is supported by a gimbal assembly including pivots which serve as electrical terminals by which energizing power is supplied to the compass electronics and by which data is read out from the compass.Other References
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