Piezoelectric actuator

Details Piezoelectric actuator Piezoelectric actuator

2007-09-11

2007-09-11

Dougherty, Thomas M. (Department: 2834)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S365000, C310S317000

Reexamination Certificate

active

11146256

ABSTRACT:
The invention provides a piezoelectric actuator having a stack body comprising a plurality of piezoelectric elements, each element having a positive and negative electrode pair which are electrically isolated from one another by the piezoelectric elements, the electrode pairs being arranged in groups of one or more electrode pairs, each group having a conducting arrangement in electrical connection therewith. The piezoelectric actuator further comprises a distribution electrode arrangement for connecting the conducting arrangement to a power supply, in use, wherein the distribution electrode arrangement includes a fuse arrangement. In the event of a short circuit between electrodes of a pair within one of the groups, the fuse arrangement breaks the electrical connection between the power supply and the conducting arrangement.

REFERENCES:
patent: 4652848 (1987-03-01), Hundrieser
patent: 4680670 (1987-07-01), Chan
patent: 0179978 (1986-05-01), None
patent: 62-165380 (1987-07-01), None
patent: 4166641 (1992-06-01), None
patent: 04367288 (1992-12-01), None
patent: 5-160459 (1993-06-01), None
patent: WO 2004/010511 (2004-01-01), None

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