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:
Jun. 13, 2017
Filed:
Mar. 06, 2013
Applicant:
Atlantic Inertial Systems Limited, Plymouth, GB;
Inventor:
Christopher Paul Fell, Dublin, IE;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01P 15/10 (2006.01); G01C 19/5684 (2012.01); G01C 19/5677 (2012.01); G01C 19/5776 (2012.01);
U.S. Cl.
CPC ...
G01C 19/5684 (2013.01); G01C 19/5677 (2013.01); G01C 19/5776 (2013.01);
Abstract
A method of tuning a vibratory ring structure includes determining an angular spacing for a pair of fine tuning holes of substantially the same size, located on or near the neutral axis of the vibratory ring structure, the angular offset being selected to reduce to an acceptable level the frequency split between the target normal mode and a further normal mode which is angularly offset relative to the target normal mode, and forming the pair of fine tuning holes in the vibratory ring structure at the determined angular spacing. A ring structure, for example, a gyroscope, tuned or balanced in this manner, is also disclosed.