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:
Jun. 04, 2013
Filed:
Nov. 04, 2010
Franck Mandica, Francheville le Haut, FR;
Bertrand Couet, Loire sur Rhone, FR;
Serge Cubizolles, Oytier Saint Oblas, FR;
Olivier Lavillat, Quintal, FR;
Franck Mandica, Francheville le Haut, FR;
Bertrand Couet, Loire sur Rhone, FR;
Serge Cubizolles, Oytier Saint Oblas, FR;
Olivier Lavillat, Quintal, FR;
SEB S.A., Ecully, FR;
Abstract
Control process for a piezoelectric pump () of an electric household appliance comprising a pump chamber () equipped with a mobile wall () displaceable under the action of a piezoelectric actuator (A), characterized in that during a startup phase of the pump (), the piezoelectric actuator (A) is supplied during a plurality of alternations with an alternating supply signal having a voltage U bringing about a substantial deformation of the piezoelectric actuator (A) for a maximum sweeping of the volume of the pump chamber () by the mobile wall (), and further characterized in that the pump startup phase is followed by a normal operation phase during which the supply signal is modified so that the mean flow rate provided by the pump () is less than the flow rate provided during the startup phase.