Measuring and testing – Speed – velocity – or acceleration – Angular rate using gyroscopic or coriolis effect
Reexamination Certificate
2007-03-29
2009-11-17
Kwok, Helen C. (Department: 2856)
Measuring and testing
Speed, velocity, or acceleration
Angular rate using gyroscopic or coriolis effect
C073S504160
Reexamination Certificate
active
07617727
ABSTRACT:
A vibrating inertial rate sensor has operational elements that define axes that are rotationally offset or “skewed” from a node or anti-node reference axis. The skew may be relative to separate node or anti-node reference axes, or take the form of an element that is “split” about the same node axis. Both the drive signal and the sense signal may be resolved from a common set of sensing elements. The drive elements may also operate on a skewed axis angle to rotationally offset the vibration pattern to affect active torquing of the gyroscope. Skewed drive elements may be combined with skewed or split elements on the same device. The skewed sensing scheme may be applied to vibratory systems having one or more node axes. The skewed drive scheme may be applied to vibratory systems having two or more node axes to affect active torquing.
REFERENCES:
patent: 4157041 (1979-06-01), Loper, Jr. et al.
patent: 4655081 (1987-04-01), Burdess
patent: 4759220 (1988-07-01), Burdess et al.
patent: 4951508 (1990-08-01), Loper, Jr. et al.
patent: 5218867 (1993-06-01), Varnham et al.
patent: 5349857 (1994-09-01), Kasanami et al.
patent: 5430342 (1995-07-01), Watson
patent: 5445007 (1995-08-01), Varnham et al.
patent: 5471875 (1995-12-01), Sato et al.
patent: 5540094 (1996-07-01), Varnham et al.
patent: 5587529 (1996-12-01), Iguchi et al.
patent: 5621171 (1997-04-01), Fell
patent: 5635640 (1997-06-01), Geen
patent: 5763780 (1998-06-01), Matthews et al.
patent: 5817940 (1998-10-01), Kobayashi et al.
patent: 5932802 (1999-08-01), Ogawa
patent: 6272925 (2001-08-01), Watson
patent: 6550329 (2003-04-01), Watson
patent: 6651499 (2003-11-01), Fell et al.
patent: 6698271 (2004-03-01), Fell et al.
patent: 6805007 (2004-10-01), Fell et al.
patent: 6845667 (2005-01-01), Watson
patent: 6848305 (2005-02-01), Fell et al.
patent: 6883374 (2005-04-01), Fell et al.
patent: 7188523 (2007-03-01), Wyse et al.
patent: 7526957 (2009-05-01), Watson
patent: 2007/0240508 (2007-10-01), Watson
Watson, William S.,Vibrating Element Angular Rate Sensors for Precision Applications, pp. 17-20, date unknown.
Fell, C., Hopkin, I., and Townsend, K.,A Second Generation Silicon Ring Gyroscope, Symposium Gyro Technology, pp. 1.0-1.14, Dated 1999.
Lynch, D. D.,Coriolis Vibratory Gyros, Symposium Gyro Technology, pp. 1.0-1.14, Dated 1998.
Watson, William S.,Vibrating Structure Gyro Performance Improvements, Symposium Gyro Technology, pp. 6.0 to 6.13, Dated 2000.
Watson, William S.,Improved Vibratory Gyro Pick-Off and Drive Geometry, Symposium Gyro Technology, pp. 5.0 to 5.14, Dated 2006.
International Search Report, dated Feb. 27, 2008, pp. 1-10.
Kwok Helen C.
Patterson Thuente Skaar & Christensen P.A.
Watson Industries Inc.
LandOfFree
Vibrating inertial rate sensor utilizing split or skewed... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Vibrating inertial rate sensor utilizing split or skewed..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vibrating inertial rate sensor utilizing split or skewed... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4084428