Patent ID: 9344057
Filing Date: 2016-05-17
CPC Classification: H03H

Claim Text:
1. A tuning-fork type crystal resonator plate for which a crystal plate having a crystal orientation is used, comprising: a base portion; and a pair of leg portions protruding from the base portion in one direction, wherein a groove is formed in each main surface of each of the leg portions so that the groove is biased relative to a center of the corresponding leg portion in a width direction and that distances from the groove to both side surfaces of the corresponding leg portion are different from each other, and wherein side surfaces of both sides of the groove have different angles of inclination, the inclined side surfaces of both sides of the groove are formed with a lowermost point of the groove being interposed therebetween, and the lowermost point of the groove is positioned in a middle of the corresponding groove in the width direction in a state viewed from an end surface in the width direction.