Flexural vibration piece

Details Flexural vibration piece Flexural vibration piece

2011-04-26

2011-04-26

SanMartin, J. (Department: 2837)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

Reexamination Certificate

active

07932664

ABSTRACT:
A resonator includes a base portion and a vibration arm. The vibration arm has first and second main faces opposite each other, the main faces have first and second grooves, the first groove has a plurality of first groove portions which are divided in the longitudinal direction of the vibration arm and arranged to be alternately shifted on both sides with respect to the longitudinal center line of the vibration arm, the second groove has a plurality of second groove portions arranged similar to the first groove portions on an opposite side to the first groove portions with respect to the longitudinal center line. A voltage is applied to excitation electrodes provided at the first and second grooves and second excitation electrodes provided on both side faces of the vibration arm, such that the vibration arm flexural-vibrates in the in-plane direction of the first or second main face.

REFERENCES:
patent: 4384232 (1983-05-01), Debely
patent: 6897737 (2005-05-01), Sakata et al.
patent: 7015630 (2006-03-01), Tanaya
patent: 7168319 (2007-01-01), Dalla Piazza et al.
patent: 7851980 (2010-12-01), Kizaki
patent: 2007/0227333 (2007-10-01), Higuchi et al.
patent: 2007/0240511 (2007-10-01), Higuchi et al.
patent: 2009/0158566 (2009-06-01), Hagelin et al.
patent: 2010/0207495 (2010-08-01), Kikushima et al.
patent: 2010/0277041 (2010-11-01), Yamazaki et al.
patent: 02-032229 (1990-02-01), None
patent: 06112760 (1994-04-01), None
patent: 2002-261575 (2002-09-01), None
patent: 2004135052 (2004-04-01), None
patent: 2004-260718 (2004-09-01), None
patent: 2004248237 (2004-09-01), None
patent: 2006060727 (2006-03-01), None
patent: 2006270335 (2006-10-01), None
patent: WO 00-44092 (2000-07-01), None
C. Zener et al., “Internal Friction in Solids I. Theory of Internal Friction in Reeds”, Physical Preview, vol. 52, pp. 230-235 (Aug. 1, 1937).
C. Zener et al., “Internal Friction in Solids II. General Theory of Thermoelastic Internal Friction”, Physical Preview, vol. 53, pp. 90-99 (Jan. 1, 1938).
C. Zener et al., “Internal Friction in Solids III. Experimental Demonstration of Thermoelastic Internal Friction”, Physical Preview, vol. 53, pp. 100-101 (Jan. 1, 1938).
Hideaki Itoh et al., “Analysis of Q-value of a quartz-crystal tuning-fork using thermoelastic equations” 36thEM Symposium, pp. 5-8 (May 17, 2007).
Hideaki Itoh et al., “Analysis of Q-Value of Quartz Crystal Tuning Fork Using Thermoelastic Coupling Equations” Japanese Journal of Applied Physics 48 (2009).
Terry V. Roszhart, “The effect of thermoelastic internal friction on the Q of micromachined silicon resonators”, Solid-State Sensor and Actuator workshop, Technical Digest IEEE (Jan. 4, 1990).

Affiliated with

Also associated with

Rating

Flexural vibration piece does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Flexural vibration piece, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Flexural vibration piece will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2726573