Actuator

Details Actuator Actuator

2007-02-27

2007-02-27

Budd, Mark (Department: 2834)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S331000, C310S344000, C310S348000

Reexamination Certificate

active

10972757

ABSTRACT:
An actuator, comprising a beam (2) including a laminated structure which has piezoelectric layers (30, 31, 32) and electrode layers (20, 21, 22, 23), a holding mechanism to hold the beam, a feeding terminal (10) to supply an exciting power to the electrode layers of the beam, and a contact mechanism provided in the holding mechanism, the holding mechanism comprising a case (1) including a space (5) to house the beam (2) and a holding part to hold at least one of an end and a central portion of the beam (2), the contact mechanism being configured to contact with a part of the beam (2) and prevent the beam from excessively deflecting when a great impact is added to the beam.

REFERENCES:
patent: 4333029 (1982-06-01), Kolm et al.
patent: 4492360 (1985-01-01), Lee et al.
patent: 4625137 (1986-11-01), Tomono
patent: 6222304 (2001-04-01), Bernstein
patent: 2003/0168943 (2003-09-01), Matsuyama et al.
patent: 1501074 (2005-01-01), None
patent: 63-117671 (1988-05-01), None
patent: 02-246383 (1990-10-01), None
patent: 09-327655 (1997-12-01), None
patent: WO 01/54450 (2001-07-01), None
patent: WO 2004/077497 (2004-09-01), None

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