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. 06, 2004
Filed:
Apr. 24, 2002
Applicant:
Inventors:
Peter Post, Ostfidern-Nellingen, DE;
Jürgen Gerhartz, Esslingen, DE;
Reiner Bindig, Bindlach, DE;
Assignee:
Festo AG & Co., Esslingen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16K 3/102 ;
U.S. Cl.
CPC ...
F16K 3/102 ;
Abstract
A directly actuated electric valve is proposed that has a piezoelectric drive unit ( ) for direct actuation of a valve member ( ). The piezoelectric drive unit ( ) contains, extending transverse to the displacement direction of valve member ( ), at least one piezo-flexural element ( ′), which acts on valve member ( ) at one end and is mounted stationary with respect to the housing at the other, such that its electrically induced flexural motion produces the linear displacement motion of valve member ( ). Such a configuration permits very short switching times with compact dimensions.