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US 2014/0091676 A1Published application
Crystal unit
AssigneeNihon Dempa Kogyo Co., Ltd.
InventorTOYOAKI KUSUNOKI
Life of this patent
Estimating the term…
Abstract
A crystal unit according to this disclosure includes an IT-cut round crystal element supported at two points on an outer periphery portion of the IT-cut round crystal element. A rotation angle in plane between a straight line connecting the two points and Z″ axis of a double-rotation is within a specific range. The specific range includes an angle where an amount of frequency variation is zero.
Claims6
A crystal unit, comprising:
- an IT-cut round crystal element, supported at two points on an outer periphery portion of the IT-cut round crystal element, wherein
- a rotation angle in plane between a straight line connecting the two points and Z″ axis of a double-rotation is within a specific range, the specific range including an angle where an amount of frequency variation is zero.
Dependencies are inferred from the claim text.