The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 03, 1982
Filed:
Aug. 11, 1980
William T Spurgin, Charlottesville, VA (US);
Charles R Wesner, Crozet, VA (US);
Sperry Corporation, New York, NY (US);
Abstract
An apparatus for providing the operator of a marine vessel with an alarm when when a malfunction occurs in the steering system of the vessel. The apparatus utilizes a closed loop simulator to simulate the rudder position, and a comparison of the simulated rudder position to the actual rudder activates the alarm when a predetermined threshold value has been exceeded. Appropriate time delays during which the alarm is disabled make the apparatus adaptable for use with steering systems having a steering gear which has rate inconstancy, and a shaping circuit makes the apparatus adaptable for use with steering systems having a steering gear which has static positional nonlinearity.