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:
Sep. 06, 2005
Filed:
Nov. 22, 2001
Khaled Karrai, Munich, DE;
Miles Haines, Hampshire, GB;
Khaled Karrai, Munich, DE;
Miles Haines, Hampshire, GB;
attocube Systems AG, Munich, DE;
Abstract
An inertial positioning device comprising: a base plate (); a top plate () for mounting an element to be rotated; a rotation member () having a column () on which the top plate is mounted in frictional engagement for slip-stick rotational motion; and a pair of piezoelectric actuators () each secured to the base plate at one end and to lateral extensions () of the rotation member at their other ends. Simultaneous actuation of the piezoelectric actuators rotates the column of the rotation member about its axis. When a suitable asymmetric drive signal is supplied to the piezoelectric actuators, the top plate is rotated by slip-stick motion. The device is compact, has a good load capacity for an inertial motor and is operable in extreme environments such as liquid helium temperatures, high vacuum and high magnetic fields.