Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1996-03-15
1998-02-03
Dougherty, Thomas M.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
310330, 310332, H01L 4108, H02N 200
Patent
active
057148325
ABSTRACT:
A miniature grating drive device (216) for accurately and precisely positioning a grating (236) of a projection Moire topography measurement system where the Moire topography measurement system is included as part of a hand-held medical instrument for providing surface measurements of inaccessible living membranes. The drive device (216) includes two separate piezoelectric bimorph actuators (248, 256) for positioning the grating (236) at three precise locations. The first piezoelectric bimorph actuator (256) accurately positions the grating (236) at a first location, and the second piezoelectric bimorph (248) actuator accurately positions a base (232) on which the first piezoelectric actuator (256) is attached to move the grating (236) to a second location.
REFERENCES:
patent: 3684904 (1972-08-01), Galutva et al.
patent: 4453103 (1984-06-01), Vishnevsky et al.
patent: 4625559 (1986-12-01), Carter et al.
patent: 4947077 (1990-08-01), Murata
patent: 5259032 (1993-11-01), Perkins et al.
patent: 5455477 (1995-10-01), Sano et al.
Blackburn John P.
Liskow Dean H. S.
Shirrod Terry S.
Denson-Low W. K.
Dougherty Thomas M.
Hughes Electronics
Schubert W. C.
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