Flexural vibration element and electronic component

Details Flexural vibration element and electronic component Flexural vibration element and electronic component

2009-12-15

2011-11-29

Dougherty, Thomas (Department: 2837)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

Reexamination Certificate

active

08067880

ABSTRACT:
A flexural vibration element includes: a plurality of vibrating arms provided in parallel with each other; a connecting part connecting the vibrating arms; and one central supporting arm extending between the vibrating arms from the connecting part in parallel with the vibrating arms at equal distance from the arms. In the flexural vibration element, the connecting part has a groove formed on each of front and rear surfaces thereof, and the groove is provided in an area of the connecting part in which compressive stress and tensile stress due to flexural vibration of the vibrating arms alternately occur at a vibrating arm side and an opposite side of the vibrating arm side, in a width direction of the vibrating arms.

REFERENCES:
patent: 6587009 (2003-07-01), Kitamura et al.
patent: 6700313 (2004-03-01), Dalla Piazza et al.
patent: 7084556 (2006-08-01), Dalla Piazza et al.
patent: 7528682 (2009-05-01), Kawashima
patent: 2005/0040737 (2005-02-01), Tanaya
patent: 2005/0062368 (2005-03-01), Hirasawa et al.
patent: B-43-1194 (1968-01-01), None
patent: A-1-282751 (1989-11-01), None
patent: U-2-32229 (1990-02-01), None
patent: A-5-312576 (1993-11-01), None
patent: A-10-19577 (1998-01-01), None
patent: A-2001-183140 (2001-07-01), None
patent: A-2002-261575 (2002-09-01), None
patent: A-2004-260718 (2004-09-01), None
patent: A-2006-345519 (2006-12-01), None
Itoh et al., “Analysis of Q-value of a quartz-crystal tuning-fork using thermoelastic equations,” 36thEM Symposium, pp. 5-8, May 17, 2007.
Itoh et al., “Analysis of Q-Value of Quartz Crystal Tuning Fork Using Thermoelastic Coupling Equations,” Japanese Journal of Applied Physics, vol. 48, pp. 07GF03-1 to 07GF03-5, The Japanese Society of Applied Physics, 2009.
Zener et al., “Internal Friction in Solids: I. 'Theory of Internal Friction in Reeds,” Physical Preview, vol. 52, pp. 230-235, Aug. 1, 1937.
Zener et al., “Internal Friction in Solids: II. General Theory of Thermoelastic Internal Friction,” Physical Review, vol. 53, pp. 90-99, Jan. 1, 1938.
Zener et al., “Internal Friction of Solids: III. Experimental Demonstration of Thermoelastic Internal Friction,” Physical Preview, vol. 53, pp. 100-101, Jan. 1, 1938.
Roszhart et al., “The effect of thermoelastic internal friction on the Q of micromachined silicon resonators,” Solid-State Sensor and Actuator Workshop, Technical Digest IEEE, pp. 13-16, Jan. 4, 1990.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4285176