Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Reexamination Certificate
2011-06-14
2011-06-14
Budd, Mark (Department: 2837)
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
C310S323010
Reexamination Certificate
active
07960895
ABSTRACT:
A vibratory actuator includes a piezoelectric element, a driver element provided on the piezoelectric element and a movable body supported by the driver element. A control unit supplies a first voltage and a second voltage at the same frequency to the piezoelectric element. By supplying the first voltage and the second voltage having a difference phase from a phase of the first voltage by 90°, the piezoelectric element is lead to composite vibration of stretching and bending, thereby causing the driver to make an elliptical motion by the vibration and move the movable body. The control unit switches, during a fine mode, a phase difference between the first voltage and the second voltage between 90° and 0°.
REFERENCES:
patent: 5949177 (1999-09-01), O'Brien et al.
patent: 6064140 (2000-05-01), Zumeris
patent: 6376965 (2002-04-01), Kataoka et al.
patent: 6492760 (2002-12-01), Matsuda et al.
patent: 6657361 (2003-12-01), Morales Serrano et al.
patent: 7119475 (2006-10-01), Matsuzaki et al.
patent: 7211929 (2007-05-01), Ganor et al.
patent: 7352108 (2008-04-01), Diefenbach et al.
patent: 03-190577 (1991-08-01), None
patent: 03-270680 (1991-12-01), None
patent: 06-197562 (1994-07-01), None
patent: 10-234191 (1998-09-01), None
patent: 11-089255 (1999-03-01), None
patent: 2001-045773 (2001-02-01), None
patent: 2001-246324 (2001-09-01), None
patent: 2006-115583 (2006-04-01), None
Adachi Yusuke
Higashionji Masaru
Honjo Kenichi
Mukae Hideaki
Nagaoka Eiichi
Budd Mark
Panasonic Corporation
Renner , Otto, Boisselle & Sklar, LLP
LandOfFree
Drive unit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Drive unit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Drive unit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2699337