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Class Information
Number: 417/413.2
Name: Pumps > Motor driven > Electric or magnetic motor > Collapsible wall pump > Diaphragm type > Piezoelectric driven
Description: Apparatus wherein the membranelike member is motivated to provide a pumping action by attaching to the membrane a crystalline substance, and a mechanical stress is produced by subjecting the crystalline substance to an electrical voltage.










Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8684707 Piezoelectric microblower Apr. 1, 2014
8678787 Piezoelectric micro-blower Mar. 25, 2014
8668474 Electro-active valveless pump Mar. 11, 2014
8641388 Household electric appliance having a piezoelectric pump Feb. 4, 2014
8596998 Piezoelectric micro-blower Dec. 3, 2013
8579606 Fluid transportation device Nov. 12, 2013
8528602 Microvalve system Sep. 10, 2013
8522462 Piezoelectric pump for household electric appliance Sep. 3, 2013
8523538 Piezoelectric pump Sep. 3, 2013
8484869 Ironing appliance comprising a piezoelectric pump Jul. 16, 2013
8475144 Check valve diaphragm micropump Jul. 2, 2013
8454320 Control process for a piezoelectric pump of an electric household appliance and an electric household appliance employing such a process Jun. 4, 2013
8454327 Piezoelectric micropump Jun. 4, 2013
8449273 Fluid transporting device using conductive polymer May. 28, 2013
8382452 Pump arrangement comprising a safety valve Feb. 26, 2013
8382453 Piezoelectric pump, cooling device, and electronic apparatus Feb. 26, 2013
8371829 Fluid disc pump with square-wave driver Feb. 12, 2013
8360753 Micro fluidic transportation device and method for manufacturing the same Jan. 29, 2013
8353682 Microfluidic-device systems and methods for manufacturing microfluidic-device systems Jan. 15, 2013
8308452 Dual chamber valveless MEMS micropump Nov. 13, 2012
8308453 Diaphragm pump Nov. 13, 2012
8308454 Fluid conveyance device Nov. 13, 2012
8297947 Fluid disc pump Oct. 30, 2012
8287253 Fluid conveyance device Oct. 16, 2012
8267675 High flow piezoelectric pump Sep. 18, 2012
8246325 Miniaturized liquid cooling apparatus and electronic device incorporating the same Aug. 21, 2012
8218318 Low noise cooling device Jul. 10, 2012
8210209 Microfluidic system including a bubble valve for regulating fluid flow through a microchannel Jul. 3, 2012
8210830 Valveless micropump Jul. 3, 2012
8210831 Piezoelectric pump Jul. 3, 2012
8162628 Wiring structure for use in micro piezoelectric pump Apr. 24, 2012
8162629 Piezoelectric pump Apr. 24, 2012
8152491 Pump using unimorph diaphragm Apr. 10, 2012
8137315 Self-contained pump Mar. 20, 2012
8123502 Acoustic pump utilizing radial pressure oscillations Feb. 28, 2012
8087906 Fluid pump with disposable component Jan. 3, 2012
8081454 Gas ejector, electronic device, and gas-ejecting method Dec. 20, 2011
8079832 Device for the actively-controlled and localised deposition of at least one biological solution Dec. 20, 2011
8066494 Micropump Nov. 29, 2011
8064204 Electronic apparatus Nov. 22, 2011
8057198 Variable displacement piezo-electric pumps Nov. 15, 2011
8051905 Cooling systems employing fluidic jets, methods for their use and methods for cooling Nov. 8, 2011
8043073 Micropump and adhesive-free method for joining two substrates Oct. 25, 2011
8016573 Piezoelectric-driven diaphragm pump Sep. 13, 2011
7990705 Systems and methods for synthetic jet enhanced natural cooling Aug. 2, 2011
7972124 Piezoelectric micro-blower Jul. 5, 2011
7942650 Liquid discharge control apparatus including a pump and accumulator with a movable member May. 17, 2011
7863035 Fluidics devices Jan. 4, 2011
7800279 Thermo-buckled micro actuation unit made of polymer of high thermal expansion coefficient Sep. 21, 2010
7654377 Hydraulic actuator for a vehicular power train Feb. 2, 2010

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