Vibration wave actuator

Details Vibration wave actuator Vibration wave actuator

1997-09-08

2000-04-18

Dougherty, Thomas M.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310328, 310359, 310366, H02N 200

Patent

active

060519118

ABSTRACT:
A vibration actuator includes a vibration member; and a plurality of electromechanical energy conversion elements for vibrating the vibration member. The electromechanical energy conversion elements include a plurality of first energy conversion elements each having at least four divided electrodes. The first energy conversion elements are stacked, and electrodes, which are in phase with each other, of each energy conversion element are connected in respective regions of the energy conversion element to attain electrical connections.

REFERENCES:
patent: 3390287 (1968-06-01), Sonderegger
patent: 4513219 (1985-04-01), Katsuma et al.
patent: 4562375 (1985-12-01), Sashida
patent: 4678956 (1987-07-01), Izukawa et al.
patent: 4734610 (1988-03-01), Okumura et al.
patent: 4742264 (1988-05-01), Ogawa
patent: 4742365 (1988-05-01), Bartky et al.
patent: 4759107 (1988-07-01), Ogawa et al.
patent: 4763148 (1988-08-01), Tsukimoto et al.
patent: 4771203 (1988-09-01), Mukohjima et al.
patent: 4788468 (1988-11-01), Izukawa et al.
patent: 4975614 (1990-12-01), Honda
patent: 5036240 (1991-07-01), Lew
patent: 5099166 (1992-03-01), Hirano et al.
patent: 5124611 (1992-06-01), Tamai et al.
patent: 5231325 (1993-07-01), Tamai et al.
patent: 5669127 (1997-09-01), Takahashi et al.
patent: 5770916 (1998-06-01), Ezaki et al.
patent: 5814919 (1998-09-01), Okumura
European Search Report dated Oct. 14, 1996.
Minoru Kurosawa, et al. , "An Ultrasonic Motor Using Bending Vibrations of a Short Cylinder", IEEE; Transactions on Ultrasonics, Ferroelectronics and Frequency Control (vol. 36, No. 5, 1989), (p. 517 to 521). European Search Report dated May 10, 1995.
English abstract of Japanese Laid Open Patent Document No. 3-40767 published May 8, 1991.
English Abstract of Japanese Laid Open Patent Document No. 3-289375 published Mar. 26, 1992.
English Abstract of Japanese Laid Open Patent Document No. 1-17354 published May 10, 1989.
Kenji Uchino, "Piezoelectric/Electrostrictive Actuator" Kyoritsu Press (pp. 78 to 81).
Japanese Official Letter/Search Report dated Mar. 16, 1998.

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