The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 12, 2013
Filed:
Mar. 05, 2009
Paul Hayford, Holmer Green, GB;
Graham Mead, Bucks, GB;
Benjamin Jeppesen, Bucks, GB;
Thomas Bachmann, Freudenberg, DE;
Christoph Scherer, Grobostheim, DE;
Thomas Maier, Aschaffenburg, DE;
Paul Hayford, Holmer Green, GB;
Graham Mead, Bucks, GB;
Benjamin Jeppesen, Bucks, GB;
Thomas Bachmann, Freudenberg, DE;
Christoph Scherer, Grobostheim, DE;
Thomas Maier, Aschaffenburg, DE;
ITW Limited, Berkshire, GB;
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.