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. 30, 1989
Filed:
Jan. 20, 1988
Applicant:
Inventors:
John S Heeks, Old Harlow, GB;
Michael C Bone, Saffron Waldon, GB;
Emlyn Jones, Harlow, GB;
James W Parker, Bishop's Stortford, GB;
Assignee:
STC PLC, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01B / ; G01C / ;
U.S. Cl.
CPC ...
356350 ;
Abstract
A fibre optic gyroscope arrangement having a nulling feedback control loop, the gyroscope including means 40 for varying wavelength of the light source 41 for a predetermined period of time at switch-on of the gyroscope and means for subsequently operating the light source 41 at a fixed wavelength.