Patent · US Active

Electromechanical motor, especially a piezoelectric microstepper drive

US8004149B2 · kind B2 · utility

3Cited by

5References

19Claims

0Family size

Inventors

Heinrich-Jochen Blume · Darmstadt, DE
Bernhard Gottlieb · Munich, DE
Andreas Kappel · Höhenkirchen-Siegertsbrunn, DE
Robert Wolfgang Kissel · Egelsbach, DE
Karl-Heinz Mittenbühler · Griesheim, DE
Tim Schwebel · Birkenfeld, DE
Carsten Wallenhauer · Schwarzheide, DE

Key dates

Filing date	Apr 23, 2008
Grant date	Aug 23, 2011
Priority date	—
Expiry date	Apr 23, 2028

Classification

Technology area (CPC H)Electricity
CPC primaryH02N2/105
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A motor which includes two drive elements, especially piezoelectric bending actuators, having effective directions that are perpendicular to each other. These actuators act upon a drive ring to thereby rotate a shaft. Two tension-compression bars, which are parallel to an effective direction, are connected to the drive ring, have respective joints at their ends and are connected to the ends of a diagonal bar, relative to which the ring can be displaced in the other effective direction. The diagonal bar itself can be displaced relative to fixing elements to an effective direction via a diagonal suspension. The drive is compact, having actuators that are non-radially hinged to the ring.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.