Patent · US Active

Piezoelectric pump for household electric appliance

US8522462B2 · kind B2 · utility

0Cited by

9References

11Claims

0Family size

Assignee

ROWENTA WERKE GMBH · DE

Inventors

Andrea Lukas · Offenbach, DE
Bjorn Scheve · Reichelsheim, DE
Matthias Hahn · Kaiserslautern, DE

Key dates

Filing date	Nov 30, 2009
Grant date	Sep 3, 2013
Priority date	—
Expiry date	Feb 6, 2030

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF04B43/095
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

Piezoelectric pump for a household electric appliance having a moving wall interposed between a first casing element defining a pumping chamber with the moving wall, and a second casing element applying pressure to the periphery of the moving wall in order to hold the latter in position. The moving wall has an exterior face in contact with a piezoelectric actuator designed to cause the moving wall to move so as to bring about a periodic variation in the volume of the pumping chamber under the action of the piezoelectric actuator wherein the first casing element and the second casing element are held together under stress by an elastic clip, the elastic clip applying a pressure that tends to compress the first casing element onto the second casing element.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.