Ultrasonic motor having securing projections

Details Ultrasonic motor having securing projections Ultrasonic motor having securing projections

2005-04-19

2005-04-19

Budd, Mark (Department: 2834)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S323020

Reexamination Certificate

active

06882085

ABSTRACT:
A lower metal block of a stator includes a plurality of securing projections, which engage with an external member and are arranged in an outer peripheral surface of the lower metal block at generally equal angular intervals. Each securing projection is circumferentially located between corresponding two of slits of the lower metal block and has first and second axial ends, which are opposed to one another in a direction generally parallel to the axial direction of the stator and are oriented toward first and second axial ends, respectively, of the stator. The first axial end of each securing projection is axially positioned within an axial extent of the slits, which is measured in the axial direction of the stator.

REFERENCES:
patent: 6018213 (2000-01-01), Yano
patent: 6300705 (2001-10-01), Komoda et al.
patent: 6366004 (2002-04-01), Yano et al.
patent: 6469419 (2002-10-01), Kato et al.
patent: 6509673 (2003-01-01), Komoda
patent: 20030052574 (2003-03-01), Matsushita et al.
patent: A-2003-88146 (2003-03-01), None
patent: A-2003-111452 (2003-04-01), None
patent: A-2003-111454 (2003-04-01), None

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