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:
Jan. 09, 2007
Filed:
Oct. 31, 2003
Stefan Johansson, Uppsala, SE;
Stefan Johansson, Uppsala, SE;
Piezomotor Uppsala AB, Uppsala, SE;
Abstract
A peristaltic actuating element () is arranged against a body (). The peristaltic actuating element () comprises volumes (A–G) of electromechanical material and is arranged for selectively causing a dimension change in a main motion direction () of the peristaltic actuating element () within a limited peristaltic section (). By changing voltage signals activating the volumes (A–G), the peristaltic section () is caused to move along the peristaltic actuating element (). The body () interacting with the peristaltic actuating element is thereby displaced relative to the peristaltic actuating element (). Preferably, the length of the peristaltic section () is less than half the length of the entire peristaltic actuating element (), more preferably much less. It is also preferred, if the peristaltic actuating element () is arranged so that the surface () interacting with the body () is removed therefrom within the peristaltic section ().