Piezoelectric actuator and pump using same
US7198250B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 17, 2003 |
| Grant date | Apr 3, 2007 |
| Priority date | — |
| Expiry date | Nov 6, 2023 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K31/006
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Thin chamber diaphragm-operated fluid handling devices, including thin chamber pumps and thin chamber valves, facilitate device compactness and, in some configurations, self-priming. Diaphragm actuators of the thin chamber devices either comprise or are driven by piezoelectric materials. The thinness of the chamber, in a direction parallel to diaphragm movement, is in some embodiments determined by the size of a perimeter seal member which sits on a floor of a device cavity, and upon which a perimeter (e.g. circumferential or peripheral portion) of the diaphragm actuator sits. The diaphragm actuator is typically retained in a device body between the floor seal member and another seal member between which the perimeter of the actuator is sandwiched. The devices have an input port and an output port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.