Piezoelectric vibrating piece having arm ends with...

Details Piezoelectric vibrating piece having arm ends with... Piezoelectric vibrating piece having arm ends with...

2009-02-17

2011-11-08

Martin, Jaydi San (Department: 2837)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S344000, C310S365000

Reexamination Certificate

active

08053957

ABSTRACT:
To achieve small-sized formation by shortening a total length after ensuring a length of a base portion capable of sufficiently reducing vibration leakage, there is provided a piezoelectric vibrating piece2including a piezoelectric plate10including a pair of vibrating arm portions11, 12arranged in parallel with each other in a state of being extended in one direction from base ends to front ends, and a base portion13having connecting portions13arespectively connected to the pair of vibrating arm portions at middle positions from the base ends to the front ends for integrally supporting the pair of vibrating arm portions by way of the connecting portions, exciting electrodes20, 21respectively formed on outer surfaces of the pair of vibrating arm portions for vibrating the pair of vibrating arm portions when a drive voltage is applied thereto, a pair of mount electrodes22, 23formed on an outer surface of the base portion and electrically connected respectively to the pair of exciting electrodes, in which at least a portion of the base portion is arranged to be interposed between the pair of vibrating arm portions.

REFERENCES:
patent: 4191906 (1980-03-01), Kogure
patent: 6439051 (2002-08-01), Kikuchi et al.
patent: 7043986 (2006-05-01), Kikuchi et al.
patent: 7126262 (2006-10-01), Kawauchi et al.
patent: 7140251 (2006-11-01), Kawauchi et al.
patent: 2005/0140252 (2005-06-01), Miyata et al.
patent: 2002-261575 (2002-09-01), None

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