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:
Mar. 09, 1976
Filed:
Jan. 27, 1975
William E Zitelli, Media, PA (US);
Westinghouse Electric Corporation, Pittsburgh, PA (US);
Abstract
A system for transferring operation of a mechanism from one control signal to another control signal utilizing frequency modulation is disclosed. A rate multiplier generates pulses at an increasing frequency during a first portion of the transfer period up to a predetermined maximum frequency; and controlled to generate pulses at a decreasing frequency during the final portion of the transfer period. During the first portion of the transfer period, the peak and base of each pulse, corresponds to the value of the one and the other signal, respectively. During the final portion of the transfer period, the peak and base of the pulses are reversed to correspond to the opposite control signals. A filter averages the peaks and bases of the applied pulses during both portions of the transfer period to change gradually the average signal from the one control signal to the other.