Patent · US Active

Bi-axial electromagnetic actuator

US8393225B2 · kind B2 · utility

2Cited by

5References

21Claims

0Family size

Assignee

ITW LIMITED · GB

Inventors

Paul Hayford · Herne Bay, GB
Graham Mead · Warwick, GB
Benjamin Jeppesen · Paragon Road, GB
Thomas Hedegaard Bachmann · Freudenberg, DE
Christoph Scherer · Bensheim, DE
Thomas Maier · Grimmen, DE

Key dates

Filing date	Mar 5, 2009
Grant date	Mar 12, 2013
Priority date	—
Expiry date	Aug 22, 2029

Classification

Technology area (CPC H)Electricity
CPC primaryH02K2201/18
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A biaxial electromagnetic actuator for a materials testing apparatus comprises a first electromagnetic actuator for imparting a linear force to an output shaft and a second, direct drive electromagnetic actuator for imparting a rotational force to the shaft. The shaft is mounted in two combination bearings which permit the shaft to move axially and rotationally. One of the bearings is located within a hollow cylindrical member which constitutes the armature of the direct drive actuator in order to provide a compact and symmetrical arrangement.

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