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:
Oct. 01, 2002
Filed:
Aug. 11, 2000
Piezomotor Uppsala AB, Uppsala, SE;
Abstract
The present invention discloses an electromechanical actuator arrangement and a driving device for such an arrangement, having a plurality of drive element to be driven according to a wailing mechanism is provided. The driving device is characterised by an electrical power source ( ) and at least two switches ( ) connected in series between the terminals ( ) of the voltage source ( ). An element terminal ( ) is connected to a point ( ) between said switches ( ), and a motor phase ( ) of the actuator arrangement is connected to the element terminal ( ). A control unit ( ) is connected to control the switches ( ) in order to charge/discharge the drive elements. A charge control is thereby achieved by the use of the two switches ( ).