Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Reexamination Certificate
2011-03-29
2011-03-29
Budd, Mark (Department: 2837)
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
C310S317000
Reexamination Certificate
active
07915787
ABSTRACT:
A cylindrical piezoelectric element is arranged to share an axis with a cylindrical vibrator having different diameters at central and end portions to fix the vibrator forming a gap at the central portion. Vibration voltages are applied across first electrodes on the piezoelectric element and the vibrator, namely, a second electrode, to vibrate the vibrator and bring a wave front of a traveling wave into contact with a tubular member, i.e., a supporting member fitted to the vibrator. Friction at a contact portion of the vibrator moves a mover including the vibrator and the piezoelectric element in an axial direction of the tubular member. By amplifying the vibration amplitude using the vibrator provided separately from the piezoelectric element, a small actuator capable of performing high-speed driving is realized.
REFERENCES:
patent: 4453103 (1984-06-01), Vishnevsky et al.
patent: 4560263 (1985-12-01), Katsuma et al.
patent: 5332941 (1994-07-01), Honda
patent: 6188161 (2001-02-01), Yoshida et al.
patent: 6768245 (2004-07-01), Mock et al.
patent: 7105987 (2006-09-01), Witteveen
patent: 4-72471 (1992-11-01), None
patent: 5-49273 (1993-02-01), None
patent: 10-210776 (1998-08-01), None
Chinese Office Action dated May 12, 2010 in corresponding Chinese Application No. 200810133663.5, and translation thereof.
Kuribayashi et al., “Excitation Conditions of Flexural Traveling Waves for a Reversible Ultrasonic Linear Motor”, J. Acoust. Soc. Am. 77 (4), Apr. 1985.
Hata Seiichi
Meisho Ken
Negishi Mahito
Shimokohbe Akira
Sun Dongming
Budd Mark
Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
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