Multi-layer piezoelectric device

Details Multi-layer piezoelectric device Multi-layer piezoelectric device

2011-03-08

2011-03-08

Budd, Mark (Department: 2837)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S358000

Reexamination Certificate

active

07902726

ABSTRACT:
To provide a multi-layer piezoelectric device having excellent durability in which the amount of displacement does not change even when the piezoelectric actuator is subjected to continuous operation over a long period of time under a high voltage and a high pressure, the multi-layer piezoelectric device comprises a stack formed by stacking piezoelectric layers and internal electrodes alternately one on another and external electrodes formed on a first side face and on a second side face of the stack, wherein one of the adjacent internal electrodes is connected to the external electrode formed on the first side face and the other internal electrode is connected to the external electrode formed on the second side face, while content of alkali metal in a range from 5 ppm to 300 ppm is contained.

REFERENCES:
patent: 4626369 (1986-12-01), Walker et al.
patent: 5504338 (1996-04-01), Marrian et al.
patent: 6414417 (2002-07-01), Tsuyoshi et al.
patent: 6440324 (2002-08-01), Hayashi et al.
patent: 6511763 (2003-01-01), Kida et al.
patent: 6573639 (2003-06-01), Heinz et al.
patent: 61-133715 (1986-06-01), None
patent: 01-130568 (1989-09-01), None
patent: 05-194016 (1993-08-01), None
patent: 06-100364 (1994-04-01), None
patent: 2001-342062 (2001-12-01), None
patent: 2002-208743 (2002-07-01), None
patent: 2002-220281 (2002-08-01), None
patent: 2003-008092 (2003-01-01), None
patent: 2003-017768 (2003-01-01), None
patent: 2003-197991 (2003-07-01), None
patent: 01/48834 (2001-07-01), None
patent: 01/93345 (2001-12-01), None
Chinese language office action and its English language translation for corresponding Chinese application 200910130272.2 lists the reference above.
Japanese language office action dated Aug. 11, 2010 and its English language translation for corresponding Japanese application 2003388420.
Japanese language office action dated Sep. 14, 2010 and its English language translation for corresponding Japanese application 2003333112 lists the reference above.

Affiliated with

Also associated with

Rating

Multi-layer piezoelectric device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Multi-layer piezoelectric device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-layer piezoelectric device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2655242