Piezo-electric drive and its use for driving heavy loads

Details Piezo-electric drive and its use for driving heavy loads Piezo-electric drive and its use for driving heavy loads

2006-04-25

2006-04-25

Dougherty, Thomas M. (Department: 2834)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S311000, C310S323010

Reexamination Certificate

active

07034439

ABSTRACT:
In a piezoelectric drive comprising clamping piezo packets which are adjacently arranged, under compressive pre-stress, between a reference part and an output part, the reference part is connected to the clamping piezo packets by means of a “semi-rigid” bridging plate, which adapts in a flexible manner to differences in stack height of the piezo packets, in a static state but remains essentially rigid in a dynamic state, that is, at the operating frequency of the drive.

REFERENCES:
patent: 5039900 (1991-08-01), Nashiki et al.
patent: 5144187 (1992-09-01), Culp
patent: 6150750 (2000-11-01), Burov et al.
patent: 0424609 (1990-06-01), None
patent: 60-204272 (1985-10-01), None
patent: 61-022776 (1986-01-01), None
patent: 09-275689 (1997-10-01), None

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