Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Reexamination Certificate
2007-09-18
2007-09-18
Dougherty, Thomas M. (Department: 2834)
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
C310S323020
Reexamination Certificate
active
11353691
ABSTRACT:
A driving device of the disclosure has an electromechanical transducer that extends and contracts upon application of voltage thereto and a support member that slidably supports a movable body and is displaced with the electromechanical transducer to which the support member is connected. The disclosed device includes a drive circuit that applies the voltage to the electromechanical transducer is such that the voltage which increases or decreases from a first voltage to a last voltage in a stepped manner and in which at least three values sequentially circulate. A period of time for which the first voltage is applied is changeable. By this method, the movable body is moved with respect to the support member by making a difference between an extension velocity and a contraction velocity.
REFERENCES:
patent: 5589723 (1996-12-01), Yoshida et al.
patent: 5917267 (1999-06-01), Miyazawa et al.
patent: 6016231 (2000-01-01), Kanbara et al.
patent: 6232697 (2001-05-01), Mizumoto
patent: 6249093 (2001-06-01), Takahata et al.
patent: 6320298 (2001-11-01), Kawabe
patent: 6483226 (2002-11-01), Okada
patent: 6512321 (2003-01-01), Yoshida et al.
patent: 6703762 (2004-03-01), Okada
patent: 6717329 (2004-04-01), Yoshida et al.
patent: 6727635 (2004-04-01), Okamoto et al.
patent: 6876126 (2005-04-01), Okada
patent: 7193351 (2007-03-01), Yoshida
patent: 11-98865 (A) (1989-08-01), None
patent: 09-191676 (A) (1997-07-01), None
patent: WO/2006/017399 (2006-02-01), None
Okamoto Yasuhiro
Yuasa Tomoyuki
Dougherty Thomas M.
Konica Minolta Opto Inc.
Sidley Austin LLP
LandOfFree
Driving device and driving method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Driving device and driving method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Driving device and driving method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3750790