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:
May. 28, 1991
Filed:
Jan. 26, 1989
Applicant:
Inventors:
Chin L Chang, Phoenix, AZ (US);
Rudolf C Dankwort, Phoenix, AZ (US);
Assignee:
Honeywell Inc., Minneapolis, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01B / ;
U.S. Cl.
CPC ...
356350 ;
Abstract
A phase difference controller for a rotation sensor based on a coiled optical fiber operating a dual output generator in a feedback loop to provide a pair of signals to operate a pair of frequency translating devices in the optical path with the coil. A pair of sawtooth-like signals of appropriate frequency and polarity operate the frequency translating device to provide a phase difference shift in the optical path.