Patent · US Active

Electromechanical motor, especially a piezoelectric microstepper drive

US8618716B2 · kind B2 · utility

0Cited by

7References

19Claims

0Family size

Assignee

CONTINENTAL AUTOMOTIVE GMBH · DE

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 22, 2008
Grant date	Dec 31, 2013
Priority date	—
Expiry date	Sep 19, 2029

Classification

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

Abstract

A microstepper motor which comprises two electromechanical 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. The actuators are non-radially hinged to the drive ring via a torsion-proof, nested frame-type complex structure (drive module) including an interior drive ring, a frame and a U-shaped outer frame. The drive is compact and, the drive module is configured as a single injection-molded structure.

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