Ultrasonic motor

Details Ultrasonic motor Ultrasonic motor

2011-04-26

2011-04-26

Dougherty, Thomas M (Department: 2837)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S323010, C310S323020, C310S323050, C310S323060, C310S323080, C310S323130

Reexamination Certificate

active

07932660

ABSTRACT:
An ultrasonic motor has a cylindrical rotor for performing a mechanical output, a plurality of ultrasonic vibrators each having two points in internal contact with the rotor, and a preload mechanism for pressing the ultrasonic vibrators from an inside toward an outside of the rotor, and the ultrasonic vibrators are provided to be rotatable relative to the preload mechanism. With this configuration, an internal contact type ultrasonic motor capable of performing efficient drive by using a plurality of ultrasonic vibrators each in contact with a cylindrical rotor at two points and allowing contact at all contact points without requiring a high machining accuracy can be provided.

REFERENCES:
patent: 4019073 (1977-04-01), Vishnevsky et al.
patent: 6266296 (2001-07-01), Miyazawa
patent: 6617759 (2003-09-01), Zumeris et al.
patent: 6867532 (2005-03-01), Brady et al.
patent: 7075212 (2006-07-01), Witteveen
patent: 2008/0297002 (2008-12-01), Oki et al.
patent: 2-41672 (1990-02-01), None
patent: 4-200283 (1992-07-01), None
patent: 06-189569 (1994-07-01), None
patent: 2005-328697 (2005-11-01), None
patent: 2007-106393 (2007-04-01), None
Matsunaga, Y. et al., “An In-wheel type micro ultrasonic motor using sector-shaped Piezoelectric Ceramics Vibrators” Thesis Committee for the Symposium on the Basics and Applications of Ultrasonic Electronics, Proceedings of the 27th Symposium on the Basics and Application Electronics, Nov. 15, 2006, vol. 27, pp. 489-490.
Kanda, T. et al., “A Micro Ultrasonic Motor Using Sector -shaped Piezoelectric Vibrators and a low-profile Preload Mechanism”, Japan Society of Mechanical Engineers, Robotics and Mechatronics Division, Proceedings of the JSME Conference on Robotics and Mechatronics, May 10-12, 2007, pp. 1A2-B01.

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