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:
Apr. 08, 2008
Filed:
Jun. 15, 2006
Stefan Johansson, Uppsala, SE;
Johan Abrahamsson, Uppsala, SE;
Robert Sunnerberg, Uppsala, SE;
Piezomotor Uppsala AB, Uppsala, SE;
Abstract
An electromechanical motor (), using at least two bimorph, monomorph or multimorph electromechanical actuating elements () interconnected by a common actuator backbone () is disclosed. The actuating elements () are controllable in both a longitudinal direction (L), i.e. in the main extension direction of the actuating element (), and a flexural direction, i.e. bending of the actuating element (), separately. The different actuating elements () can be controlled individually as well. The actuator () dimensions are preferably selected to resonance frequencies in vicinity of a certain frequency. The actuating elements () are provided with interaction portions () at which any contact between the actuator and a body () to be moved is made. In order to operate well both in fine-positioning and resonant motion, the interaction portions () are arranged to partially suppress the transfer of acoustic waves between the actuating elements () and the body () to be moved.