Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Reexamination Certificate
2007-03-06
2007-03-06
Schuberg, Darren (Department: 2834)
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
C310S316010
Reexamination Certificate
active
10804343
ABSTRACT:
A vibration-type driving device comprises a vibration element including a driving member and an electro-mechanical energy conversion element having an electrode and arranged to displace the driving member with a driving signal supplied to the electrode, and a driven element that is kept in contact with the driving member of the vibration element. According to the driving signal supplied to the electrode of the electro-mechanical energy conversion element, the vibration element excites vibrations in two flexural vibration modes in which a direction of generation of a node in one mode is perpendicular to that in the other mode. With the use of the two flexural vibration modes, the natural vibration frequency of the vibration element can be prevented from increasing, and the position of a node occurring in one flexural vibration mode and the position of an antinode occurring in the other flexural vibration mode can be made to coincide with each other, so that the amount of displacement of the driving member can be made large.
REFERENCES:
patent: 4779018 (1988-10-01), Okuno et al.
patent: 5148068 (1992-09-01), Kushida et al.
patent: 5610468 (1997-03-01), Miyazawa et al.
patent: 5698930 (1997-12-01), Takagi
patent: 5952766 (1999-09-01), Mukohjima et al.
patent: 6107725 (2000-08-01), Tamai
patent: 6661153 (2003-12-01), Shiv et al.
patent: 6879085 (2005-04-01), Shiv et al.
patent: 6-311765 (1994-04-01), None
patent: WO 00/25369 (2001-08-01), None
Kojima Nobuyuki
Yamamoto Shinji
Aguirrechea J.
Canon U.S.A. IP Div
Schuberg Darren
LandOfFree
Vibration-type driving device, control apparatus for... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Vibration-type driving device, control apparatus for..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vibration-type driving device, control apparatus for... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3778840