Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1997-04-04
2000-06-27
Budd, Mark O.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
310367, 310368, 310354, H01L 4108
Patent
active
060810661
ABSTRACT:
A piezo-electric resonator includes terminal plates holding a piezo-electric substrate and which are stored in a case. The piezo-electric substrate can be formed from piezo-electric ceramics. The piezo-electric ceramic plate has projections at the non-vibrating sections of its cuter circumferential side surfaces. When the centers of the piezo-electric ceramic plate are held by the terminal plates, the projections do not contact the inner surfaces of the case. When the position of the piezo-electric ceramic plate is displaced due to external vibration, the projections may contact the inner surfaces of the case and the vibrating sections of the piezo-electric ceramic plate do not contact the inner surfaces of the case. Due to this fact, its electrical characteristics are not changed. in addition, since this configuration is set such that the piezo-electric ceramic plate can be slightly moved in the case, the piezo-electric ceramic plate is less likely to receive a high shock or stress through the case.
REFERENCES:
patent: 1619854 (1927-03-01), Crossley
patent: 1766036 (1930-06-01), Crossley
patent: 2139998 (1938-12-01), Clarke
patent: 2505121 (1950-04-01), Knights
patent: 2626363 (1953-01-01), Holmbeck
patent: 4649310 (1987-03-01), Nakamura et al.
patent: 4716332 (1987-12-01), Hayashi
Budd Mark O.
NEC Corporation
LandOfFree
Piezo-electric resonator does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Piezo-electric resonator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Piezo-electric resonator will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1786960