Title:
STRUCTURE OF ULTRA-THIN SHEET PIEZORESONATOR
Document Type and Number:
WIPO Patent Application WO/1991/012662
Kind Code:
A1
Abstract:
A piezoresonator of a type wherein an ultra-thin oscillation portion and a ring-like enclosure portion for enclosing the periphery of the oscillation portion are formed integrally. The widths of a pair of thick side edges of the ring-like enclosure portion facing each other decrease gradually from one of the ends of the ring-like enclosure portion, the end is to be fixed to a case, to the other end facing the former, the ends being perpendicular to the edges. Thus, even when the piezoresonator is cantilevered, its strength can be improved drastically and breakage due to vibration and impact can be prevented.
Inventors:
MORITA TAKAO (JP)
ISHII OSAMU (JP)
KUROSAKI TAKEBUMI (JP)
ISHII OSAMU (JP)
KUROSAKI TAKEBUMI (JP)
Application Number:
PCT/JP1990/001273
Publication Date:
August 22, 1991
Filing Date:
October 02, 1990
Export Citation:
Assignee:
TOYO COMMUNICATION EQUIP (JP)
International Classes:
H03B5/32; H03H3/02; H03H9/05; H03H9/10; H03H9/17; H03H9/19; (IPC1-7): H03H9/19
Foreign References:
| JPS613513A | 1986-01-09 | |||
| JPS58219810A | 1983-12-21 | |||
| JPS54107293A | 1979-08-22 | |||
| JPS5312292A | 1978-02-03 |
Other References:
See also references of EP 0468051A1
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