Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Reexamination Certificate
2007-01-29
2009-12-29
SanMartin, J. (Department: 2837)
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
C310S366000, C310S323040, C310S323060
Reexamination Certificate
active
07638932
ABSTRACT:
Internal electrode layers (5) include a common electrode layer (3) and feed electrode layers (6) alternately placed in a stacking direction with piezoelectric layers (1) interposed between the common electrode layer (3) and the feed electrode layers (6). The common electrode layer (3) has a common electrode (3a). The feed electrode layers (6) include a first feed electrode layer (6a) and a second feed electrode layer (6b). The first feed electrode layer (6) has four divided electrodes (2athrough2d) and a first connection electrode (2e) for providing connection between two of the divided electrodes (2b, 2d). The second feed electrode layer (6) has four divided electrodes (4athrough4d) and a second connection electrode (4e) for providing connection between two of the divided electrodes (4a, 4c). The first and second connection electrodes (2e, 4e) are formed on parts of longitudinally middle parts of the associated piezoelectric layers (1) except both transverse end parts of the associated piezoelectric layers (1), respectively. The common electrode (3a) is connected to an external electrode (7g). The two divided electrodes (2b, 2d) of the first feed electrode layer (6a) are connected through external electrodes (7b, 7d) to the two divided electrodes (4b, 4d) of the second electrode layer (6b). The other divided electrodes (2a, 2c) of the first feed electrode layer (6a) are connected through external electrodes (7a, 7c) to the other divided electrodes (4a, 4c) of the second electrode layer (6b).
REFERENCES:
patent: 7005776 (2006-02-01), Iino et al.
patent: 7061159 (2006-06-01), Funakubo
patent: 7362036 (2008-04-01), Sasaki
patent: 7514843 (2009-04-01), Nagahama et al.
patent: 7545085 (2009-06-01), Adachi
patent: 2004/0189155 (2004-09-01), Funakubo
patent: 2008/0278032 (2008-11-01), Adachi et al.
patent: 2008/0278033 (2008-11-01), Adachi et al.
patent: 07209070 (1995-08-01), None
patent: 2000-308376 (2000-11-01), None
patent: 2003-501988 (2003-01-01), None
patent: 2004-320980 (2004-11-01), None
patent: 2006-187112 (2006-07-01), None
patent: 2006187112 (2006-07-01), None
patent: 2007074896 (2007-03-01), None
patent: 2007312600 (2007-11-01), None
patent: WO 00/74153 (2000-12-01), None
McDermott Will & Emery LLP
Panasonic Corporation
SanMartin J.
LandOfFree
Piezoelectric element and ultrasonic actuator does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Piezoelectric element and ultrasonic actuator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Piezoelectric element and ultrasonic actuator will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4149198